+publisher:"Freie Universität Berlin" +contributor:("Univ.-Prof. Dr. R. Staufenbiel")

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Freie Universität Berlin

1. Schmutzer, Sibylle. Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows.

Degree: 2011, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-8428

► The study is structured in three parts with the following aims: First the preservation of urine samples should be proved. The aim of the second… (more)

▼ The study is structured in three parts with the following aims: First the preservation of urine samples should be proved. The aim of the second part is the development of an efficient concept to prevent post partum paresis in dairy cows without having the negative effects of a moderate DCAD-lowering. Third a cross sectional study using herd data should give an overview of the DCAD and the minerals (sodium, potassium, sulphur, chlorine) in pre-partum rations influencing its formula and effecting cows heath. For the methodical examination a part of the urine samples was conserved with Bronopol and pool samples were produced from single samples. These samples were divided in two sections: one half kept in room temperature and the other in fridge temperature. On the one hand the ability to store these urine samples without a lack of constant measure exams was compared. Except sodium and potassium, which differed a lot from the beginning, all the other parameters only had a little difference. On the other side the other half of the nonpreserved samples was used to make pool samples to compare the results for urine pH, NABE (net-acid-base-elimination) and urine-calcium-excretion with those of the arithmetic mean of the single samples. Furthermore, the statistical spread of the single samples around the arithmetic mean should be proved. The differences were very small, which means that the pool sample can represent the arithmetic mean, and also the single sample. Second a field study was accomplished to prove the efficiency of a moderate dosed anionic salt and the effects to heath development in dairy cows during the transit period. Therefore, two dairy farms were attended for about 10 month. A DCAD between 0 and 50 meq/kg TS should have been achieved. As a control of success the urine parameters pH, NABE and calcium-excretion were consulted as well as the effects on health development. If the DCAD was above 50 meq/kg TS, there was a clear effect on the urine parameters (urine-pH↑, NABE↑, calcium-excretion↓) and the health development. Cases of subclinical or even clinical hypocalcaemia with following diseases increased. Third the cross sectional study analyses the feeding rations of dry cows containing the DCAD, and the amount of potassium, sodium, sulphur and chlorine. The samples were taken from 158 different dairy farms between 2004 and 2008. First the herds of three federal states with and without anionic salts were compared. Due to the imbalanced data base no analyzable results could be achieved. Comparing the years a low DCAD and potassium-concentration correlates constantly with an increase of calcium and sulphur in anionic rations and vice versa in non anionic rations. In addition, urine samples from pre-partum dry cows were taken to prove if there are additional effects of anionic rations on the acid- base-household and the excretion of calcium. But there was no significant coherence affecting the efficacy of anionic rations except the minerals including the DCAD-formula. Potassium influences the alkalinity of the… Advisors/Committee Members: w (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), R.%20Stenzel%22%29&pagesize-30">Prof. Dr. W.-R. Stenzel (furtherReferee), Prof. Dr. K. Männer (furtherReferee).

Subjects/Keywords: parturient paresis; dairy cows; hypocalcaemia; inorganic salts; asymptomatic infections; prevention; urine analysis; field tests; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA (6^th Edition):

Schmutzer, S. (2011). Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-8428

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Schmutzer, Sibylle. “Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-8428.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Schmutzer, Sibylle. “Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows.” 2011. Web. 16 Jan 2021.

Vancouver:

Schmutzer S. Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-8428.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Schmutzer S. Investigation for the moderate use of anionic rations to prevent hypocalcaemia in the antepartum transit period of dairy cows. [Thesis]. Freie Universität Berlin; 2011. Available from: http://dx.doi.org/10.17169/refubium-8428

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

2. Zechner, Gerhard. Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows.

Degree: 2010, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-11567

► As a result of the national and international competition in milk production often negative consequences for the health of dairy cows have been observed. Parturient… (more)

▼ As a result of the national and international competition in milk production often negative consequences for the health of dairy cows have been observed. Parturient paresis belongs in the milk economy to the most frequent peripartal disease. At begin of lactation, dairy cows are not able to cover the sudden and high requirement of calcium with physiological homeostatic mechanisms of the body. The negative economic consequences of parturient paresis led to many attempts to develop a successful prophylaxis of this disease. One option is the supplementation with vitamin D or its metabolites, which are decisive for the regulation of Ca-metabolism. However, vitamin D or its metabolites can only be used, if a counter-regulation can be avoided by application of the right dose and the right length of time. It was therefore the intention of the present study to optimize the dose and the duration of supplementation with 25(OH)D3. In experiment 1 cows were supplemented with 0.5-, 1.0- or 2.0 mg 25(OH)D3 per day 3 weeks before expected time of parturition (until parturition). In experiment 2 cows were supplemented with 1.0-, 2.0- or 4.0 mg 25(OH)D3 per day 1 week before expected time of parturition for a maximum of 7 days. The following results were obtained: a) The concentration of 25(OH)D3 in the blood rose according to the dose and time of supplementation. b) The concentration of 1,25(OH)2D3 in the blood did not change before parturition. c) The concentrations of Ca, Mg and P in the blood were not influenced by the supplementation before parturition. d) The concentrations of Ca and 1,25(OH)2D3 showed dose-dependent [25(OH)D3], but not significant changes in the peripartal period. e) Clinical treatment with Ca-infusions in experiment 1 increased with the dose of 25(OH)D3 (0.5-, 1.0- and 2.0 mg). These observations allow the preliminary conclusion, that in spite of unchanged Ca- and 1,25(OH)2D3 – concentrations in the blood before parturition a predisposition was induced, which impairs a rapid regulation of the Ca- homeostasis during time of parturition. It is suggested, that the long time of supplementation is the major cause of this impairment. f) The experimental design of experiment 2 (1.0-, 2.0- and 4.0 mg for 7 days) tried to avoid this possible complication. The obtained results support the conclusion, that the reduced length of supplementation improved the regulation of Ca-homeostasis around parturition. However, the number of cows in each group (à 12) does not allow statements about a successful prophylaxis of milk fever. g) It was not clear, why the postpartal increase of 1,25(OH)2D3 in both experiments was almost the same in all groups, in spite of increasing concentrations of 25(OH)D3. These findings permit the conclusion, that the application of 1.0 mg 25(OH)D3 per day and cow for 1 week does not change the increase of 1,25(OH)2D3 production p.p. negatively. The induction of a counter regulation did obviously not occur as it has been always observed in previous studies. Hence, a perspective for further studies with… Advisors/Committee Members: n (gender), Prof.%20Dr.%20H.%20Martens%22%29&pagesize-30">Univ.-Prof. Dr. H. Martens (firstReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee), Prof.%20Dr.%20O.%20Simon%22%29&pagesize-30">Univ.-Prof. Dr. O. Simon (furtherReferee).

Subjects/Keywords: cattle; dairy cows; parturient paresis; cholecalciferol; calcium; calcium metabolism; metabolic disorders; disease prevention; homeostasis; hypocalcaemia; tests; vitamin d; vitamin supplements; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zechner, G. (2010). Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-11567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zechner, Gerhard. “Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows.” 2010. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-11567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zechner, Gerhard. “Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows.” 2010. Web. 16 Jan 2021.

Vancouver:

Zechner G. Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows. [Internet] [Thesis]. Freie Universität Berlin; 2010. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-11567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zechner G. Effect of oral supplementation with 25(OH)D3 on calcium mobilization in cows. [Thesis]. Freie Universität Berlin; 2010. Available from: http://dx.doi.org/10.17169/refubium-11567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

3. Malchau, Inke. Examinations to investigate the effects of feeding propylene glycol, glycerin and L-carnitin on metabolism and parameters of efficiency of dairy cows concerning ketosis prevention.

Degree: 2011, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-11005

► The prevalence of subclinical ketosis and metabolic disorders caused by negative energy balance in many modern dairy farms often are a reason for insufficient milk… (more)

▼ The prevalence of subclinical ketosis and metabolic disorders caused by negative energy balance in many modern dairy farms often are a reason for insufficient milk yield, high rate of disease and impaired reproduction performance. The aim of this study was to investigate the effects of feeding propylene glycol, glycerin, and L-carnitin on metabolism and milk production. 97 Holstein Friesian cows were divided into four groups, at least five days before calving. All four groups were fed with the same total-mixed-ration but with different additions. Group 1 (control) received no addition, group 2 received 250 g propylene glycol/cow/day, group 3 received 312,5 g raw glycerin/cow/day (corresponding to 250 g pure glycerin/cow/day), and group 4 received 312,5 g raw glycerin and 2 g L-carnitin/cow/day. The additions were mixed into the TMR. Until day 100 post partum dry matter intake, milk yield and body weight were recorded daily. Milk components were checked weekly. Blood samples were collected on the day of division into the groups and on the days 1, 3, 7, 14, 21, 28 and 56 p.p. and examined for certain metabolism parameters. Determination of BCS and body-fat-thickness were taken on the day of division and on the days 1, 14, 28, 56, 80 and 100 p.p.. Urine samples were collected on the day of division and on the days 7, 21 and 56 p.p.. Liver biopsies were taken on the day of division and on the days 7 and 21 p.p.. The cows in group 2 (PG) had significant lower BHB- and NEFA-concentrations in serum. Significantly lower were as well the milk fat/protein-quotient, liver fat- and liver triyglyceride-content. In contrast to that group 3 (glycerin) showed significant higher BHB- and NEFA-concentrations. Both milk fat/protein- quotient and ECM-yield were significantly higher as in the groups 1 and 2. The cows in group 3 needed more medical treatment. The cows in group 4 (glycerin and L-carnitin) had the significant highest milk yield. Feed intake was significantly greater in this group, too. In spite of the higher milk yield all the other determined metabolism parameters did not differ. In this study administrating of propylene glycol had the best suitability for the prevention of ketosis and for the improvement of the whole metabolic status. The addition of glycerin and L-carnitin lead to an increased milk yield without making energy balance worse. Advisors/Committee Members: w (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. K. Männer (furtherReferee), Prof.%20Dr.%20W.%20Heuwieser%22%29&pagesize-30">Univ.-Prof. Dr. W. Heuwieser (furtherReferee).

Subjects/Keywords: ketosis; dairy cows; metabolism; propylene glycol; carnitine; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Malchau, I. (2011). Examinations to investigate the effects of feeding propylene glycol, glycerin and L-carnitin on metabolism and parameters of efficiency of dairy cows concerning ketosis prevention. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-11005

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Malchau, Inke. “Examinations to investigate the effects of feeding propylene glycol, glycerin and L-carnitin on metabolism and parameters of efficiency of dairy cows concerning ketosis prevention.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-11005.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Malchau I. Examinations to investigate the effects of feeding propylene glycol, glycerin and L-carnitin on metabolism and parameters of efficiency of dairy cows concerning ketosis prevention. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-11005.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Malchau I. Examinations to investigate the effects of feeding propylene glycol, glycerin and L-carnitin on metabolism and parameters of efficiency of dairy cows concerning ketosis prevention. [Thesis]. Freie Universität Berlin; 2011. Available from: http://dx.doi.org/10.17169/refubium-11005

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

4. Jessen, Arne. Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level.

Degree: 2011, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-9641

► The aim of this study was the improvement of concepts for the efficient application of anionic salts to optimise prophylactic effects whilst minimising side effects.… (more)

▼ The aim of this study was the improvement of concepts for the efficient application of anionic salts to optimise prophylactic effects whilst minimising side effects. To this end, an observational study was made of a commercial dairy farm (housing 1 700 lactating Holstein-Frisian dairy cows, annual average production about 11 000 kg of milk, 3.83% fat and 3.33% protein). The anionic rations were compared with a low calcium diet to analyse the effects on the metabolism and health of the cows of feeding anionic salts. The application of anionic salts was made over a 9 months period according to a test plan (aim: DCAD around 0 mEq/kg DM, calcium content 9-14 g Ca/kg DM). Afterwards the dairy farm switched from the feeding of the anionic rations to the low calcium diet (aim: DCADbetween +100 mEq/kg DM and +200 mEq/kg DM, calcium content 4-6 g Ca/kg DM). In order to record the effect of the different feed preparations on the metabolism of the cows, blood samples were taken from the calving animals (n=705 fed with anionic salts and n=168 with the low calcium diet) and urine samples (n=445 fed with anionic salts and n=135 with the the low calcium diet) from the cows in the close-up-period. Furthermore feed samples from the prepared rations (n=13 fed with anionic salts and n=6 with the the low calcium diet) were also examined in regular intervals. The potassium content of the feed rations in this study was the determining factor for the DCAD (sr2 = 0,23; p < 0,05). Therefore the potassium content mainly determines the acidbase balance of the cows. To calculate the DCAD the in practice widely used formula of ENDER (1971) should be applied because it is internationally recognised and the reference values for the application of anionic rations are largely based on it. The successful application of anionic rations led in this study to a significant increase in average serum calcium concentrations compared with the calcium reduced diet (1.93 mmol/l vs. 1.83 mmol/l) during calving. The application of the anionic concept gave rise to positive effects on the health of the animals in the form of reduced incidence of illnesses in comparison with the low calcium diet. This was particularly noticeable in the incidences of parturient hypocalcaemia. The use of anionic salts led to a reduction of parturient hypocalcemia incidences (6.3% vs. 10.2%). The large proportion of hypocalcemic animals (about 50% of the multipara cows and 20% of the cows in the first lactation), which is comparable with the international literature, makes clear that every dairy farm requires a strategic and systematic prophylactic concept for the reduction of clinical and sub-clinical hypocalcemia. It also questions whether the current serum calcium concentration threshold of 2.0 mmol/l for the assessment of calcium homeostasis in the immediate peripartum period is appropriate. The results of this study concur with the current scientific understanding of the physiological effects of anionic salts. This knowledge provides the basis for the successful and safe… Advisors/Committee Members: m (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof.%20Dr.%20K.%20M%C3%83%C2%A4nner%22%29&pagesize-30">Univ.-Prof. Dr. K. Männer (furtherReferee), Prof.%20Dr.%20U.%20R%C3%83%C2%B6sler%22%29&pagesize-30">Univ.-Prof. Dr. U. Rösler (furtherReferee).

Subjects/Keywords: dairy cows; parturient paresis; hypocalcaemia; diet; ion balance; acid-base equilibrium; farm management; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jessen, A. (2011). Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-9641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jessen, Arne. “Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-9641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jessen, Arne. “Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level.” 2011. Web. 16 Jan 2021.

Vancouver:

Jessen A. Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-9641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jessen A. Investigation for the improvement of the practical use of anionic rations for a safe and effective prophylaxis of hypocalcemia on herd level. [Thesis]. Freie Universität Berlin; 2011. Available from: http://dx.doi.org/10.17169/refubium-9641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

5. Wülbeck, Christian. Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations.

Degree: 2011, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/13656

► The objective of the present study was to determine effects of the supplementation of 240 g sodium bicarbonate (NaHCO3) as dietary buffer to a mixed… (more)

▼ The objective of the present study was to determine effects of the supplementation of 240 g sodium bicarbonate (NaHCO3) as dietary buffer to a mixed diet high in grass silage on early lactating German Holstein cows. The trial covered the first 15 weeks of lactation. Forty cows and heifers were divided equally into two groups and fed a basal ration whose forage portion consisted of 70 % grass silage and 30 % maize silage (dry matter basis). Additional concentrates (without or with NaHCO3) were given in dependence on milk yield during milking in the automatic single-milk-box. Dry matter intake from the basal ration and concentrates as well as milk yield were recorded daily. Based on regular milk tests milk composition was analyzed. Four times during the trial period samples of ruminal fluid, urine and faeces were taken from each animal and the body weights were documented. The pH-value of each sample was determined. Moreover, ruminal fluid was analyzed by gas chromatography on content and composition of fatty acids, urine was tested on net acid-base excretion (NABE). The crude protein (CP) and ash contents of the faeces were determined to estimate diet organic matter digestibility from faecal CP. In addition, dry matter and proximate constituent contents of concentrates and the basal ration were estimated. Finally, the fertility status of each animal was determined at the end of the trial. The following results concerning NaHCO3-supplementation were obtained: 1\. There was no effect on dry matter intake and milk -performance. 2\. Energy balances developed earlier towards positive ranges, but were negative throughout the whole trial period. 3\. Postpartum changes in body weight and back fat thickness were less pronounced. 4\. The concentration of acetate in the ruminal fluid was higher, likewise the acetate-propionate-ratio, whereas ruminal pH was not affected. 5\. Significantly different NABE in urine at similar pH values. 6\. No influence on fecal pH or diet organic matter digestibility, which showed high values for both diets. 7\. Resting times, empty days and calving intervals were not different, whereas insemination index was lower by 0,6 points and first services were higher by 30 percentage units when NaHCO3 was supplemented. The results of the present study support conclusions of previous research, that additional dietary NaHCO3 in non-maize- silage based rations shows basically no effects. Nevertheless, metabolites of ruminal fluid and urine indicated NaHCO3 supplementation effects. However, the magnitude of the differences was such that it can be concluded that they were of minor biological significance. Although the present study indicated benefits for dairy cows with additional buffer concerning long-term effects like reproductive performance these differences were not statistically different. Subsequent studies on larger herds and (or) covering more than one lactation should be conducted to investigate effects of additional NaHCO3 on fertility traits. Advisors/Committee Members: m (gender), Prof.%20Dr.%20K.%20M%C3%83%C2%A4nner%22%29&pagesize-30">Univ.-Prof. Dr. K. Männer (firstReferee), Prof.%20Dr.%20K.-H.%20S%C3%83%C2%BCdekum%22%29&pagesize-30">Univ.-Prof. Dr. K.-H. Südekum (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: dairy cows; lactation; sodium bicarbonate; grass silage; buffering capacity; feed supplements; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wülbeck, C. (2011). Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/13656

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wülbeck, Christian. “Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/13656.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wülbeck, Christian. “Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations.” 2011. Web. 16 Jan 2021.

Vancouver:

Wülbeck C. Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/13656.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wülbeck C. Effects of supplemental sodium bicarbonate on high-yielding dairy cows in early-lactation fed grass silage-based mixed rations. [Thesis]. Freie Universität Berlin; 2011. Available from: https://refubium.fu-berlin.de/handle/fub188/13656

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

6. Klingbeil, Maria. Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows.

Degree: 2015, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/12429

► The objective of this study was to investigate the factors that affect the quantity, quality, and calcium content of the first colostrum in Holstein Friesian… (more)

▼ The objective of this study was to investigate the factors that affect the quantity, quality, and calcium content of the first colostrum in Holstein Friesian cows, with special emphasis on composition and potency. It should be verify that the lactation number is the main influence factor and that the amount of colostrum is etiologic for the developing of puerperal paresis. Another aim was to obtain more detailed data on the relation between the quantity and quality of colostrum and explore the possibilities and limits of affecting it. An observational study was conducted from April 2012 to March 2013 at a commercial dairy farm (2177 Holstein Friesians, average annual milk priduction approx. 11,300 kg, fat content 3.9%, protein content 3.3%). The quantity of the colostrum was determined within a half an hour after calving using a direct-tocan milking machine. The immunoglobulin concentration was estimated by refractometer and the calcium content was measured in an external laboratory. To determine calcium, phosphorus, nonesterified fatty acids (NEFA), and beta hydroxybutyrate (BHB), a blood sample was taken from the coccygeal vein on calving day and on one and seven days postpartum. To determine body condition, the back fat thickness was measured by ultrasound at drying off (6 weeks prepartum), at transfer to the preparatory group (2 weeks prepartum), one day postpartum, at transfer to the production groups (2 weeks postpartum), and 6 weeks postpartum. In addition, the daily milk production on milking days 1 to 7, the mean production on milking days 7, 14, 21, 28, 35, and 42, and the 100-day milk production were documented. Calving data (calf gender, number, weight, calving process, stillbirths) and lactation number, father of the cow, length of gestation, age at first calving, length of the dry period, fertility parameters of prelactation (days open, number of inseminations), and diseases during the dry period and up to 3 days postpartum were included in the analysis. A stepwise analysis of the data for correlations and influencing factors was conducted by means of variance analysis, correlation analysis, and multiple linear regression analysis. The average colostrum quantity was 5.6 kg with an immunoglobulin concentration of 65.6 g/l and a calcium concentration of 2,386 mg/l. The analysis showed that there are a number of influencing factors that have an effect on the quantity of colostrum. However, only ¼ of the variability of the colostrum quantity could be explained using the influencing factors examined. The dominant effect of the lactation number that was assumed in the working hypothesis was not confirmed. Instead, the effect of the lactation number is attenuated by other, more potent factors. Strong factors were milk production in the following lactation period, diseases after calving, the length of the period from drying off to transfer to the preparatory group, the father of the cow (genetics), and the weight of the calf. There is no relation to the content of calcium in the blood. The amount of calcium is… Advisors/Committee Members: w (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof.%20Dr.%20H.%20Gehlen%22%29&pagesize-30">Univ.-Prof. Dr. H. Gehlen (furtherReferee), Prof.%20Dr.%20R.%20Fries%22%29&pagesize-30">Univ.-Prof. Dr. R. Fries (furtherReferee).

Subjects/Keywords: dairy cows; cow colostrum; calcium; hypocalcaemia; milk yield; milk quality; limiting factors; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA (6^th Edition):

Klingbeil, M. (2015). Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/12429

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Klingbeil, Maria. “Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows.” 2015. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/12429.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Klingbeil, Maria. “Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows.” 2015. Web. 16 Jan 2021.

Vancouver:

Klingbeil M. Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows. [Internet] [Thesis]. Freie Universität Berlin; 2015. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/12429.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Klingbeil M. Investigation of influence factors on yield, quality and calcium content of first colostrum in holstein friesian cows. [Thesis]. Freie Universität Berlin; 2015. Available from: https://refubium.fu-berlin.de/handle/fub188/12429

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

7. Schubert, Amina. a radiological and clinical study.

Degree: 2011, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-12038

► In this retrospective study a total number of 3855 radiographic images from 2316 horses were examined and analyzed. Only the 90 Degree views (lateral views)… (more)

▼ In this retrospective study a total number of 3855 radiographic images from 2316 horses were examined and analyzed. Only the 90 Degree views (lateral views) of the tarsus were included in the study. They were assessed for the presence and incidence of so called marginal exostosis (MT III exostosis). Marginal exostosis are osseus changes which reach from the proximo-dorsal aspect of MT III proximally and are best diagnosed using radiographs of the tarsus in a straight lateral view (90 Degree). Out of 2316 horse 387 (16,7%) showed marginal exostosis of MT III. Out of these 387 horses 113 (4,9%) showed hooks and MT III exostosis unilaterally on the left hind limb, 107 (4,6%) unilaterally on the right hind limb and the remaining 167 (7,2%) bilaterally on both metatarsi. Ninety-four horses with MT III exostosis were diagnosed during pre-purchase examination. Hind limb lameness was observed in 194 (50,1%) horses with MT III exostosis. In none of the examined horses a diagnostic anaesthesia (local block) of the tarsometatarsal joint (TMT joint) was performed to diagnose lameness originating from this joint or to exclude other causes for the lameness. Overall radiographic images from a double amount of males compared to females were examined. Regarding the incidence of marginal exostosis of MT III a gender ratio of 2,3:1 (male : female) was observed. Regarding age distribution the group of 4 year old horses was identified to be the largest with 45 animals within this group. An increased incidence of MT III exostosis in certain horse breeds or in a particular breeding area was not detected. Furthermore a classification of marginal exostosis of MT III regarding their dimension was performed. On the basis of references of the Committee of Radiology and the Radiology Guidelines the radiological findings were classified as category II and II-III. The majority of horses showed MT III exostosis of over 2 mm up to 5 mm. The results of this study revealed the following conclusions: 1\. The incidence of marginal exostosis of MT III is remarkable (16,7%). Furthermore the incidence of development of hind limb lameness in horses with MT III exostosis is significantly high (50,1%). 2\. The radiological findings without any thorough clinical lameness examination including local anaesthetic block of the TMT joint should not be overestimated. 3\. The significance of a positive hock flexion test in horses with hooks and exostosis of the MT III is considered questionable due to low numbers of the hock flexion tests included in this study. 4\. Radiological imaging of the Tarsus included in a pre-purchase examination is advisable. Oblique views of the TMT joint should not be preferred over latero-medial views. 5\. Classification of radiological findings within the Radiology Guidelines should be extended for pre-purchase examination to facilitate the assessment of radiological findings for the practitioner. Advisors/Committee Members: w (gender), Prof.%20Dr.%20B.%20Hertsch%22%29&pagesize-30">Univ.-Prof. Dr. B. Hertsch (firstReferee), Prof.%20Dr.%20A.%20Grabner%22%29&pagesize-30">Univ.-Prof. Dr. A. Grabner (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: horses; horse diseases; spurs; radiography; lameness; tarsus; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Schubert, A. (2011). a radiological and clinical study. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-12038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Schubert, Amina. “a radiological and clinical study.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-12038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Schubert, Amina. “a radiological and clinical study.” 2011. Web. 16 Jan 2021.

Vancouver:

Schubert A. a radiological and clinical study. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-12038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Schubert A. a radiological and clinical study. [Thesis]. Freie Universität Berlin; 2011. Available from: http://dx.doi.org/10.17169/refubium-12038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

8. Görner, Philipp. Experimental examination on the influence factors caused by feeding to the insulin answer of the glucose tolerance test in young bulls, bullocks and heifers.

Degree: 2012, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-11473

► Due to the versatile functions of glucose in the metabolism, perpetuation of the glucose level in blood is of paramount importance for all higher organisms.… (more)

▼ Due to the versatile functions of glucose in the metabolism, perpetuation of the glucose level in blood is of paramount importance for all higher organisms. Insulin therefore plays a major role in the metabolic circle and the distribution of metabolites. Based on a special metabolism of glucose, adult cattle got lower insulin-levels. Therefore a gap arises between milk yield on one hand and fertility on the other hand in cows with a high milk yield. The genetic determination and adaption to the environment can be simulated by using metabolic tests like the glucose-tolerance-test. Content of this thesis is the evaluation of insulin parameters of the glucose-tolerance- test with young cattle. The influences of feeding and environment have been modulated specifically and effects of body condition and age have been examined. Aim was the standardization of the glucose-tolerance-test. This test could be used in the estimation of breeding values to add focus on the breeding goal of a long life. The examined blood serum samples were taken from eighteen young cattle which were tested with the glucose-tolerance-test weekly between the age of 9,2 to 14,8 months. The tested animals were six bulls, six bullocks and six heifers, mainly Holstein-Frisian. The ratios given varied between a high and a low content of energy. With some single tests the influence of protein, stress caused by noise and stress caused by food jealousy were tested. With every animal 23 glucose-tolerance-tests were carried out. 434 single tests were evaluated. Beside the glucose-tolerance- test, mass and back fat thickness were recorded in every test. As expected the increase of mass was higher in bulls than at heifers. Heifers showed a significant increase in back fat thickness. The bullocks were neutral with a mass close to the heifers and the back fat thickness near to the bulls. The concentration parameters of base-insulin and insulin were not reproducible 63 minutes after the giving of glucose. The parameters for the amplitude of the serum-insulin-curve varied individually. For standardization and to lower the numbers of taking samples the minutes 14 and 28 after glucoseinfusion can be recommended. The gender of the animals influences the reaction within the glucose-tolerance-test. Therefore the bullocks showed the highest insulin- answer and the bulls the lowest. Besides the well known supporting nature of estrogen on the insulin-answer, the testosterone seems to have a suppressing one. The glucose-insulin-system increases as well. But the examined age showed an overlapping with protein-anabolic effects in bulls and adipocyte proliferation in heifers. The rapid feeding of protein caused no effects on the insulin-level. Constant stress enforces the insulinlevel and the insulin- answer. Short-term-stress has no influence because cattle tend to fast anastasis with stress. With respect to the age of the examined animals the results of the glucose-tolerance-test were stable. Animals aged between the 10th and the 15th month can be recommended for testing… Advisors/Committee Members: m (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof.%20Dr.%20G.%20von%20Samson-Himmelstjerna%22%29&pagesize-30">Univ.-Prof. Dr. G. von Samson-Himmelstjerna (furtherReferee), Prof. Dr. H. Martens (furtherReferee).

Subjects/Keywords: Cattle; dairy cows; glucose tolerance test; animal feeding; animal breeding; sex differences; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Görner, P. (2012). Experimental examination on the influence factors caused by feeding to the insulin answer of the glucose tolerance test in young bulls, bullocks and heifers. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-11473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Görner, Philipp. “Experimental examination on the influence factors caused by feeding to the insulin answer of the glucose tolerance test in young bulls, bullocks and heifers.” 2012. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-11473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Görner P. Experimental examination on the influence factors caused by feeding to the insulin answer of the glucose tolerance test in young bulls, bullocks and heifers. [Internet] [Thesis]. Freie Universität Berlin; 2012. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-11473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Görner P. Experimental examination on the influence factors caused by feeding to the insulin answer of the glucose tolerance test in young bulls, bullocks and heifers. [Thesis]. Freie Universität Berlin; 2012. Available from: http://dx.doi.org/10.17169/refubium-11473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

9. Gohrbandt, Sandra. Formulation of a diagnostic key in veterinary medicine.

Degree: 2011, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-4502

► A veterinary key of diagnosis, findings and treatments was created at the Small Animal Clinic of the Freie Universität zu Berlin. This happened in dependence… (more)

Subjects/Keywords: veterinary medicine; taxonomy; documentation; standards; nomenclature; small animal practice; terminology; thesauri; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gohrbandt, S. (2011). Formulation of a diagnostic key in veterinary medicine. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-4502

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gohrbandt, Sandra. “Formulation of a diagnostic key in veterinary medicine.” 2011. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-4502.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gohrbandt, Sandra. “Formulation of a diagnostic key in veterinary medicine.” 2011. Web. 16 Jan 2021.

Vancouver:

Gohrbandt S. Formulation of a diagnostic key in veterinary medicine. [Internet] [Thesis]. Freie Universität Berlin; 2011. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-4502.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gohrbandt S. Formulation of a diagnostic key in veterinary medicine. [Thesis]. Freie Universität Berlin; 2011. Available from: http://dx.doi.org/10.17169/refubium-4502

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

10. Behn, Holger. Examinations to detect the influence of methodical factors and animal individual factors on the results of the intravenous glucose tolerance test with female and male young dairy cattle and first lactating dairy cows.

Degree: 2010, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-8789

► 971 intravenous glucose tolerance tests (ivGTT) have been carried out on 581 male and female young dairy cattle (Holstein Friesian, German Black and White) between… (more)

▼ 971 intravenous glucose tolerance tests (ivGTT) have been carried out on 581 male and female young dairy cattle (Holstein Friesian, German Black and White) between 4 and 22 month and also 72 first lactating dairy cows. Following parameters of glucose and insulin were determined, while all animals had a 12- 16 hours diet by free choice of water intake: basal concentrations, maximal concentrations, maximum concentrations above the basal levels as well as area equivalents. Two different halflifes of glucose as described in literature were calculated. Furthermore regularizing expenditure of the regeneration of the glucose homeostasis was detected. Targets of the study were the investigation of the factors age, feeding, belonging to a population and lactation stage and also the methodical inspection of the parameters of the ivGTT. The results are largely common with literature references. Only with the same method calculated parameters are directly comparable. Glucose half- lifes which were computed with different methods (time dependent or concentration dependent) are incomparable. The age had the most influence to the glucose tolerance at the juvenile age. Lactation stage mostly influenced the results of the ivGTT on lactating dairy cows. The influence of a diverse feeding on the glucose tolerance on female monozygotic twin heifers was shown. Solid insulin concentrations ascertained on these twin heifers can be interpreted as a genetic determination. Two other genotype- different heifer populations displayed various results at all parameters of the ivGTT. The study showed that the most favourable point in time to run an ivGTT during juvenile age is between ≥ 12 und < 15 months. Normalized environment- and feeding- conditions as well as standardized methods for the parameter determination are important for the comparability of the results. Advisors/Committee Members: [email protected] (contact), n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. Lothar Panicke (furtherReferee), Prof.%20Dr.%20Dr.%20Ralf%20Einspanier%22%29&pagesize-30">Univ.-Prof. Dr. Dr. Ralf Einspanier (furtherReferee).

Subjects/Keywords: glucose tolerance test; glucose; insulin; metabolism; ruminants; blood sugar; dairy; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Behn, H. (2010). Examinations to detect the influence of methodical factors and animal individual factors on the results of the intravenous glucose tolerance test with female and male young dairy cattle and first lactating dairy cows. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-8789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Behn, Holger. “Examinations to detect the influence of methodical factors and animal individual factors on the results of the intravenous glucose tolerance test with female and male young dairy cattle and first lactating dairy cows.” 2010. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-8789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Behn H. Examinations to detect the influence of methodical factors and animal individual factors on the results of the intravenous glucose tolerance test with female and male young dairy cattle and first lactating dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2010. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-8789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Behn H. Examinations to detect the influence of methodical factors and animal individual factors on the results of the intravenous glucose tolerance test with female and male young dairy cattle and first lactating dairy cows. [Thesis]. Freie Universität Berlin; 2010. Available from: http://dx.doi.org/10.17169/refubium-8789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

11. Wappler, Olaf. Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows.

Degree: 1998, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/11435

► In two experiments on a total of 95 cows (25 Holstein-Friesian, 64 Schwarzbuntes Milchrind) tests were made to determine the urea space 12 minutes after… (more)

▼ In two experiments on a total of 95 cows (25 Holstein-Friesian, 64 Schwarzbuntes Milchrind) tests were made to determine the urea space 12 minutes after intravenous administration of a defined amount of urea (HVR12), live weight and dorsal fat thickness, also to determine the body fat content investigated by the estimation of total body water with antipyrine. Further to this followed tests of smiliar nature between visuell respectively palpatorial estimated and measured dorsal fat thickness. The results of the tests were analysed dependent on tests of: number of lactation, state of lactation, breed, day of weighing and condition. The HVR12 is unsuitable for estimation of body fat content of dairy cows. There is no connection between the absolute body fat content and the absolute HVR12. Between the relative body fat content and the relative HVR12 combined with r2 = 0,12 a low significant measure of accuracy is established. The statement of the live weight compared with body fat content is limited. Between the absolute respectively relative body fat content and the live weight combined with r2 = 0, 34 and r2 = 0,16 significant relationships are established. With animals of the 1st and 2nd lactation, also the early and middle lactation, the live weight is unsuitable as a parameter to judge the body fat content. With cows of the 3 rd lacatation and late lactating cows the force of evidence rises increasingly. Compared to HVR12, the live weight is more suitable to estimate the body fat content. The dorsal fat thickness has a direct relationship to the body fat content. Of all three parameters the dorsal fat thickness supplies the best evidence. A significant connection of r2 = 0,62 and r2 = 0,58 can be found between the absolute respectively relative body fat content and the dorsal fat thickness. With increasing number of lactation and length of advanced lactation the force of evidence of dorsal fat thickness will increase in relation to the body fat content. Compared with the live weight, dorsal fat thickness permits cows of the 1st and 2nd lactation as well as early lactating animals a positive judgement of the body condition. The utilization of multiple regresion models promisses - compared with single parameters -no substantial improvement of evidence regarding the body fat content, except the dorsal fat thickness combined with the live weight as opposed to the dorsal fat thickness as a single parameter, a slightly improved accuracy of r2 = 0,62 to r2 = 0,69 is achieved. A certain agreement exists between, throuh extrapolation inveastigated urea space (61,7 %) and the total body water (61,1 %), also the therefrom calculated body fat content. The calculation of the body fat content relating to the extrapolated urea space achieves no improvement with reference to the time and expenditure of work in comparison with the standard method with antipyrine. Between the visuell respectively palpatorial estimated and mesured dorsal fat thickness a highly significant accuracy (r2 = 0,85) is… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof.%20Dr.%20H.%20Hartmann%22%29&pagesize-30">Univ.-Prof. Dr. H. Hartmann (furtherReferee).

Subjects/Keywords: fats; dairy-cows; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wappler, O. (1998). Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/11435

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wappler, Olaf. “Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows.” 1998. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/11435.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wappler, Olaf. “Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows.” 1998. Web. 16 Jan 2021.

Vancouver:

Wappler O. Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 1998. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/11435.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wappler O. Comparing tests on the subject of urea space, live weight and dorsal fat thickness to the body fat content of dairy cows. [Thesis]. Freie Universität Berlin; 1998. Available from: https://refubium.fu-berlin.de/handle/fub188/11435

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

12. Steinberg, Tim. experimental study.

Degree: 2007, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-13346

► To reduce pressure in the DIP joint a communication should be created from the digital sheath to the DIP joint. This allows increased synovial fluid… (more)

▼ To reduce pressure in the DIP joint a communication should be created from the digital sheath to the DIP joint. This allows increased synovial fluid to flow out of the DIP joint into the digital sheath. As a synovial fistula it should be durable in decreasing the pressure in the DIP joint. The aim of this study is to show the anatomical relationship of the structures in question as well as a comparison of the possible surgical methods. Surgical access, effectiveness and complications will be discussed. This study is based on anatomical studies of 41 leg cadavers and 3 different surgical methods. The 41 front leg cadavers for the experiment were from horses that had to be euthanised at the Equine Department of the Veterinary Hospital of the Free University of Berlin or from a local abbatoir. The cadaver included all breeds other than ponies, any gender, age and bodyweight. They were all front legs, resected in the carpal area. In the anatomical study access through the disto palmar pouch of the digital sheath could be tested. The aim is an opening of 2.5 cm by 1.2 cm as a result of the surgical separation of connective and elastic tissues in between both structures. All three surgical methods are minimal invasive and achieve the desired reduction of pressure in the DIP joint. A bi manual method controlled by tendinovaginoskopy proved to be very safe. Difficulties were due to tight spaces within the digital sheath. The method with fluoroscopy had the advantage of a single access site only, but time and technical expenses weren t in relation to that. The third method without any visual control was the easiest and without the need of technical equipment but needed a detailed knowledge of the anatomical structures and surgical experience in this approach. The choice of instruments for the tissue separation depends on the surgical methods and the long term reactions to HF surgery. HF surgical instruments should not be used without visual control. Further evaluation is needed to see if there is an advantage to coagulating incisions regarding their durability. A control study with in vivo pressure applied to the distal phalanx proved effectiveness of the surgical principle. Due to the described possible complications this surgical procedure should be used only in chronic and therapy resistant cases. The communication of DIP joint and digital sheath allows increased synovial fluid to flow into the digital sheath and an exchange of synovial fluid with tendovaginal fluid is possible. This way you can then get a tendovaginitis as well, which might increase the degree of lameness. Advisors/Committee Members: n (gender), Univ.- Prof. Dr. B. Hertsch (firstReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee), Prof.%20Dr.%20K.%20Hartung%22%29&pagesize-30">Univ.-Prof. Dr. K. Hartung (furtherReferee).

Subjects/Keywords: horse diseases; joint diseases; synovial fluid; animal experiments; surgical techniques; digital sheath; hoof joint; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Steinberg, T. (2007). experimental study. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-13346

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Steinberg, Tim. “experimental study.” 2007. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-13346.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Steinberg, Tim. “experimental study.” 2007. Web. 16 Jan 2021.

Vancouver:

Steinberg T. experimental study. [Internet] [Thesis]. Freie Universität Berlin; 2007. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-13346.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Steinberg T. experimental study. [Thesis]. Freie Universität Berlin; 2007. Available from: http://dx.doi.org/10.17169/refubium-13346

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

13. Harks, Monika. Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle.

Degree: 2007, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-14285

► The importance of ecological husbandry grows for some years. Nowadays 4% of all farms in Germany are running under ecological managing. The milk production has… (more)

▼ The importance of ecological husbandry grows for some years. Nowadays 4% of all farms in Germany are running under ecological managing. The milk production has a substantial meaning in the income of ecological farms. EU- regulations for ecological production are valid on all farms under ecological management in Europe since 1999. The guidelines of private agricultural associations match with these regulations or go beyond that. Important restrictions in the ecological dairy husbandry exist with the ban of several animal food and their additions like whole meal extraction from soy and rape as well as propyleneglycole, rumen protected fats and restricted use of concentrated food (40 %) in the ratio regarding to the dry matter. The use of performance and growth stimulants is also forbidden as well as the preventive use of chemical-synthetic medicine and antibiotics. The restriction of using chemical-synthetic allopathic medicine or antibiotics up to three treatments per animal and year and the doubling of the withdrawal period regulated by law need to be respected by the veterinarian. Using chemical-synthetic medicine without a legal withdrawal period on an ecologically managed farm, a withdrawal period of 48 hours is generally given. A great challenge after conversion to organic farming is meeting the nutrition requirements of cows with high milk yields and maintaining a good health status. An optimum in husbandry and adjusted stocking rates are important management actions to prevent diseases. From June 2003 to May 2004 regular measures of metabolism (blood/urine) and bag fat thickness were made in a dairy herd in Brandenburg, which changes to ecological farming since July 2002. The results of the monthly milk yield test and fertility measures of the herd were also analyzed. The performance of milk yield, fertility, animal health and parameters of metabolism should be obtained during the change to ecological management. On the farm 280 cows with an average milk yield of about 9000 kg milk and 250 young cows from own breeding were stapled. Food growing as well as feeding and husbandry proceeded within the ecological guidelines. Treatment of ill animals and marketing of milk and beef happened conventionally. The converting herd showed a significant decrease of milk yield and fertility. On the basis of metabolic examinations and concentrations of milk urea and protein, a lack of energy and protein supply is perceptible. The supply with ß-carotene and trace elements is not sufficient, either. The low values of heamatocrit and haemoglobin especially with the cows in early and high lactation are indications of lactation stress. The assessment of the body conditions by ultrasonographical measurement of back fat thickness shows a white spread of back fat thickness in the herd with underconditioned cows as well as a tendency of adiposis in the dry period. Because of regular measurement of the back fat thickness the tendency of adiposis lowers with the dry and older cows at the end of the examination period. A better adaptation… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. G. Schlenker (furtherReferee), Prof. Dr. H. Tönhardt (furtherReferee).

Subjects/Keywords: animal husbandry; organic farming; animal health; blood chemistry; metabolism; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Harks, M. (2007). Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-14285

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Harks, Monika. “Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle.” 2007. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-14285.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Harks, Monika. “Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle.” 2007. Web. 16 Jan 2021.

Vancouver:

Harks M. Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle. [Internet] [Thesis]. Freie Universität Berlin; 2007. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-14285.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Harks M. Research of metabolic parameters during the change from conventional to ecological husbandry of dairy cattle. [Thesis]. Freie Universität Berlin; 2007. Available from: http://dx.doi.org/10.17169/refubium-14285

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

14. Weber, Jürgen. Examinations to detect the influence of methodical factors and factors depending on the animal on the results of the intravenous glucose tolerance test with breeding bulls.

Degree: 2007, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-11503

► 480 intravenous glucose tolerance tests (ivGTT) have been carried out on 293 Holstein Friesian bulls aged from 9 20 month in two different artificial insemination… (more)

▼ 480 intravenous glucose tolerance tests (ivGTT) have been carried out on 293 Holstein Friesian bulls aged from 9 20 month in two different artificial insemination centres. Following parameters were determined, while all bulls had a 12 21 hours diet by free choose of water intake: the basal glucose and insulin concentration (G0 and I0), the maximum concentration of glucose and insulin above the basal level (GMAX and IMAX), the glucose and insulin area equivalent (GA and IA), half life of glucose (GHWZ) as well as the quotient of insulin and glucose area equivalent (IA/GA). The aim of the study was to assess the individual different regulation of testet parameters, the effect of factors like age, weight, condition and location and repeatability of the results. Furthermore, in literature described different methods to calculate half time of glucose should have been compared. Following Burkert (1998), who showed an interrelation between parameters of insulin reaction, this study should investigate, whether only one insulin parameter is enough to assess the insulin reaction. BURKERT (1998) showed in his study bulls with very different reaction of ivGTT. These special animals were picked out and the results were examined by repetition of the test. The results are largely common with literature references, well recapitulate and fundamental influenced by age and different times without feeding. Significant correlations exist between all parameters, the differences based on variable ages. 2 to 3 months after the first examination all results were repeatable. A significant correlation between all parameters existed. Thereby the difference between the values of the first and the second study in matched the majority of parameters due to the age. A significant relation between GA, GHWZ and parameters of insulin reaction is in the first and second study for a short period. Reason for the negative correlation between the values of short-dated repetition is the number of probes (n=20) and the strong influence of the single values. The age has great influence of the results. Based on the higher fat substance of young bulls the parameters of insulin reaction grew up, corresponding to concentration of glucose and half-value time of glucose decreases. This phenomenon stopped in age-group 3 (over 15 month), even more the back fat thickness declined. This crease could lead back on the test application of the bulls for the sperm production which takes place from the age of approximately one year and represents a sudden load for the breeding bulls. Based on these results the best examination point would be an age with 12 month, before the bulls start with the sperm production. Weight and back fat thickness influence the test results only due to old age. There is no significant correlation between these factors and test parameters within a close period of age. The influence of station is mostly caused by different feeding and husbandry. Therefore it is very important to create standards for examination. The method from KANEKO (1997) to… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. L. Panicke, Dummerstorf (furtherReferee), Prof.%20Dr.%20H.%20Hartmann%22%29&pagesize-30">Univ.-Prof. Dr. H. Hartmann (furtherReferee).

Subjects/Keywords: glucose tolerance test; bulls; ruminants; cattle; glucose; blood sugar; insulin; metabolism; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Weber, J. (2007). Examinations to detect the influence of methodical factors and factors depending on the animal on the results of the intravenous glucose tolerance test with breeding bulls. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-11503

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Weber, Jürgen. “Examinations to detect the influence of methodical factors and factors depending on the animal on the results of the intravenous glucose tolerance test with breeding bulls.” 2007. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-11503.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Weber J. Examinations to detect the influence of methodical factors and factors depending on the animal on the results of the intravenous glucose tolerance test with breeding bulls. [Internet] [Thesis]. Freie Universität Berlin; 2007. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-11503.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Weber J. Examinations to detect the influence of methodical factors and factors depending on the animal on the results of the intravenous glucose tolerance test with breeding bulls. [Thesis]. Freie Universität Berlin; 2007. Available from: http://dx.doi.org/10.17169/refubium-11503

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

15. Muschkowitz, Christine. Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface.

Degree: 1998, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-5056

► Food products are subject to various influencing factors possibly leading to a microbial contamination during production, treatment and entry into circulation. A possible ensuing germ… (more)

▼ Food products are subject to various influencing factors possibly leading to a microbial contamination during production, treatment and entry into circulation. A possible ensuing germ multiplication within the food product involves a high risk of food poisoning or food perishing. Of great importance for germ multiplication - during which log phase generation time can be determined - are milieu conditions such as temperature and pH-value. An accumulation of bacteria and/or their toxins can be prevented by appropriate manipulation of milieu conditions. To achieve this, increased measurements, for example of the pH-value, temperature or temperature- variation, are carried out within the framework of quality assurance systems (HACCP). It is essential to have exact knowledge of the breeding and multiplication behaviour of microbes in order to arrange pH-value / temperature / temperature-variation parameters effectively and / or to allow predictions of multiplication or of stagnation in the breeding of microorganisms (and finally to allow predictions as to how long food can be safely kept [predictive microbiology]). The speed at which multiplication takes place is manifested by the generation time. The international literature on aspects of growth and multiplication of bacteria as well as on generation time and milieu conditions has been collected and analysed in the literature review of the present study. It is evident that the information on generation time of microorganisms so far been available is still insufficient because of methodical problems. Efforts to complete data material have only been made in the 1990s, and were facilitated by the use of rapid new methods amongst which impedance measurement has proved to be especially suitable. Impedance measurement offers the possibility of quickly and effectively determining generation times indirectly under various conditions and in greater scales. Previous culture methods involved determination of germ counts and were therefore costly as far as time and materials were concerned. Impedance measurement measures the change of conductivity (impedance) within 2 samples with differing germ numbers. Generation time is determined on the basis of the difference of the initial germ numbers in proportion to the difference of the impedimetrically determined detection time. Within the framework of this project, generation intervals of 30 different strains of food-hygienically relevant Enterobacteriaceae-species and -genera were determined. The model strains belonged to 10 genera and differed in their characteristics and in their origins. The importance of these microbes was explained in the literature review, in which special attention was given to the clinical and epizootiological factors of Enterobacteriaceae-infections and -intoxications in humans as well as the possibility of perishability caused by these germs. Various illnesses caused by these bacteria in humans and animals have also been listed. The aim of the experiments was the determination… Advisors/Committee Members: n (gender), Priv.-Doz. Dr. Th. Bergann (firstReferee), Prof.%20Dr.%20K.%20Fehlhaber%22%29&pagesize-30">Univ.-Prof. Dr. K. Fehlhaber (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: bacteriology; food-hygiene; food; food-microbiology; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Muschkowitz, C. (1998). Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-5056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Muschkowitz, Christine. “Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface.” 1998. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-5056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Muschkowitz, Christine. “Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface.” 1998. Web. 16 Jan 2021.

Vancouver:

Muschkowitz C. Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface. [Internet] [Thesis]. Freie Universität Berlin; 1998. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-5056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Muschkowitz C. Investigation of the Coadsorption of K and CO on Pt(111); Li, Na, K on Pt(111);N on Cu(110) as well the clean Ga(001)-surface. [Thesis]. Freie Universität Berlin; 1998. Available from: http://dx.doi.org/10.17169/refubium-5056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

16. Hüntelmann, Claudia. Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows.

Degree: 2006, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-13339

► The objective of this study was to compare two different intervals for the implementation of treatment of chronic endometritis in dairy cows. A field trial… (more)

▼ The objective of this study was to compare two different intervals for the implementation of treatment of chronic endometritis in dairy cows. A field trial was conducted on two commercial dairy farms, in Brandenburg, Germany. Endometritis was defined as vaginal discharge and classified into three categories. In total 1377 cows were examined by rectal palpation for signs of endometritis between 20 to 26 days post partum (check 1) and classified into two groups. The overall prevalence of chronic endometritis was 28.7 % (n = 281). In group 'Early' 123 cows with signs of endometritis were treated with 0.075 mg of R-cloprostenol (Preloban®, Intervet Germany GmbH) twice in a 14 day interval, starting at day 20 to 26 post partum. In group 'Later' an identical treatment was used but with a later start. Cows (n = 158), which were diagnosed with endometritis at the time of check 1, were not treated but re-examined two weeks later. By the time of the second examination (34-40 dpp, check 2) 106 out of 158 cows were diagnosed as clinically healthy and therefore not treated. 52 cows with signs of endometritis at check 1 and 2 received two treatments of 0.075 mg of R-cloprostenol in a 14 day interval, starting at 34-40 days post partum. For the analysis of ovarian activity a blood sample was taken before the first and the second PGF2α-injection for the analysis of progesterone. A concentration of 1.0 ng/ml progesterone was considered indicative of an active corpus luteum. Prevalence of chronic endometritis at day 20 to 26 was 24.6 % and 43.1 % on farm A and B, respectively (p<0.05). Furthermore, on farm B significantly more first lactation cows were diagnosed with endometritis than muliparous cows (60.0 % vs. 30.4 %, p<0.05). Another significant difference between the farms existed regarding the prevalence of endometritis of heifer (farm A vs. B: 25.0 % vs. 60.0 %, p<0.05). Cows with endometritis showed significantly worse results regarding conception rate after first service, conception rate, the proportion of pregnant cows (to day 200 p.p.) and extended number of days open compared to healthy cows. Furthermore, cows with endometritis are diagnosed significantly less often neither with follicle or with corpus luteum in comparison to healthy cows. In the group 'Later' the cows showed poorer reproductive performance parameters (numbers of days to the first service and days open, conception rate after first service, conception rate and the proportion of pregnant cows to day 200 p.p.) than cows in group 'Early' and to the group of non-treated cows (p>0.05). Differences could be demonstrated between the farms. A significantly better conception rate was found for cows of group 'Later' on farm B in comparison to farm A. Numerically the best results regarding reproductive performance showed the non-treated cows from farm A and the treated cows of group 'Early' from farm B. Spontaneous cure between check 1 and 2 for all cows with endometritis but not treated was 67.1 %. There were differences between the farms, too. Spontaneous cure was a… Advisors/Committee Members: n (gender), Prof.%20Dr.%20W.%20Heuwieser%22%29&pagesize-30">Univ.-Prof. Dr. W. Heuwieser (firstReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee), Prof.%20Dr.%20H.%20Hartmann%22%29&pagesize-30">Univ.-Prof. Dr. H. Hartmann (furtherReferee).

Subjects/Keywords: Chronic endometritis; prostaglandin F2;

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hüntelmann, C. (2006). Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-13339

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hüntelmann, Claudia. “Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows.” 2006. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-13339.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hüntelmann, Claudia. “Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows.” 2006. Web. 16 Jan 2021.

Vancouver:

Hüntelmann C. Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2006. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-13339.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hüntelmann C. Investigation on the influence of time of post partum examination and the initiation of a PGF2α treatment of chronic endometritis in dairy cows. [Thesis]. Freie Universität Berlin; 2006. Available from: http://dx.doi.org/10.17169/refubium-13339

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

17. Görner, Stefan. Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers.

Degree: 2009, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-9302

► The partial selection of high milk yield in dairy breeding led to an enormous increase of milk yield but a series of sanitaryproblems within the… (more)

▼ The partial selection of high milk yield in dairy breeding led to an enormous increase of milk yield but a series of sanitaryproblems within the dairy cattle stocks, too. Cows with high milk yield show a low level of insulin. Insulin occupies a central position in the metabolic arrangement for milk yield, fertility and metabolism by regulating metabolic arrangements. To counteract this trend in dairy cattle selection, the glucose-tolerance-test ought to determine the individual copability of metabolism regulation and with that to mark the breeding animal´s typ of metabolism. Thereby important additional information for breeding valuation could be determine but it is clear that the results of the glucose-tolerance-test are influenced by several factors. It exists a need for standartisation of the tests to get to reproducable results for a single animal and a whole group of animals. This experimaental study examines the influences of of feeding, body condition and acute stress on the results of the glucose-tolerance-test under consideration of gender and age. 23 GTT´s have been carried out in a period of six months with six bulls, six oxen and six heifers. The animals were on average age of 9.2 months in the beginning and 14.8 months in the end of the tests. The whole period of six months was divided into three perservative phases. Each phase showed a rotation of feeding between food of high energetic potential (4-6 kg concentrated feed stuff plus 4 kg hay) and food with a low energy and protein (4 kg hay ad libitum). Addtionally a ratio with high protein and energy content rotated with a ratio of low energy and protein. Hunger, jealousy of food and accustical stress were used to create stress. A weekly determination of back fat thickness, live weight and a GTT was placed. The bull´s glucose half-life is significantly more constant than the glucose half-life of oxen and heifers. The is no significant difference of glucose half-life between oxen and heifers but heifers showed the affinity of shortest glucose half- life. The glucose expanse-equivalent showed no difference between the genders and is therefore not usable for comparison of GTT-results between bulls and heifers. As expected heifers are significantly fatter than bulls and oxen. There are no existing differences of the back fat thickness between bulls and oxen. The energy-supply-level influences the GTT-result significantly. The influence of feeding acts indipendently rectified from gender. Low energy feeding shows significant shorter glucose half-life in comparison to a high energy feeding. The aprupt change of ratio from high to less energy lowered the glucose half-life significantly. With a change from low to to high energy ratios showed a decrease of glucose half-life after a few weeks. Along with this effect goes an excursive increase of the back fat thickness. The way of feeding influences the results of GTT significantly by using the data of body condition. The influence of the body condition on the GTT-results rises with the increase of… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. L. Panicke (furtherReferee), Prof.%20Dr.%20H.%20Martens%22%29&pagesize-30">Univ.-Prof. Dr. H. Martens (furtherReferee).

Subjects/Keywords: Cattle; dairy cows; glucose tolerance test; animal feeding; animal breeding; sex differences; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Görner, S. (2009). Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-9302

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Görner, Stefan. “Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers.” 2009. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-9302.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Görner, Stefan. “Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers.” 2009. Web. 16 Jan 2021.

Vancouver:

Görner S. Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers. [Internet] [Thesis]. Freie Universität Berlin; 2009. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-9302.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Görner S. Experimental examination of feeding-based influence on results of the glucose- tolerance-tests with young bulls, oxen and heifers. [Thesis]. Freie Universität Berlin; 2009. Available from: http://dx.doi.org/10.17169/refubium-9302

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

18. Loof-Siercks, Wiebke. Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows.

Degree: 2004, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/12157

► Within the scope of a longitudinal study, eight different dairy cow herds were observed over the course of twelve months. The relevant dairy farms were… (more)

▼ Within the scope of a longitudinal study, eight different dairy cow herds were observed over the course of twelve months. The relevant dairy farms were visited every four weeks. Selected test specimens were lame cows (3rd degree and above), non-lactating (dry) cows (up to four weeks a.p.) and recently calved cows (up to four weeks p.p.). Ruminal fluid, urine, and blood samples were taken from all test specimens and milk data from the most recent milk control examination was collected. The samples were predominantly examined for acidity status and the related parameters in order to establish an acute or chronic latent ruminal acidosis as the cause for the claw problems. In addition, further metabolic parameters, electrolytes, minerals and vitamin B12 were taken into account. Furthermore, claw trimming and the use of buffer additions to the feed, the number of past lactation periods of each test specimen ,the number of days ante or post partum at the time of sampling and the loss data of lame animals during the course of the twelve month-long study were recorded for each herd. The lameness incidence was 36.5 %. In terms of ascertained diagnoses, the sole ulcer dominated with 46.9%, followed by the foot abscess (26.5%) and laminitis (12.2%). The influencing variable "claw trimming" was notable because cows which received treatment once annually had an only somewhat lower incidence than those which did not receive regular claw trimming. No correlation could be made in the eight examined dairy farms between the potential influencing variable "buffer additions" and lameness occurring later during lactation. The lameness incidence correlated significantly with increased age of the dairy cows. More than 40% of the lame cows left the herd within the first twelve months following the determined lameness; more than 20% left within the first six months. With regard to the ruminal fluid pH level, no further statistical distinction was made in the dry cows or in the recently calved cows or in the cows which became lame later. Nor could such a statistical distinction be made with regard to cows which developed a sole ulcer. Upon analysis of the urine parameter of the dry cows in connection with a later occurring lameness, no significances resulted. The milk parameters remained statistically insignificant. With regard to the chemical parameters of the blood, significant increases appeared in the ß-hydroxybutyric acid values for the recently calved cows that developed a lameness later during lactation, as well as for cows that specifically developed a sole ulcer (p=0.007 p=0.000). The factors which obviously play an important roll for the farms examined and could possibly be optimized are routine professional claw trimming and an improved adaptation of the energy needs of each dairy cow to the peripartal phase. In addition, the housing conditions with regard to cow comfort should be reconsidered, in particular for the offspring of the herd. Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof.%20Dr.%20B.-W.%20Hertsch%22%29&pagesize-30">Univ.-Prof. Dr. B.-W. Hertsch (furtherReferee), Prof. Dr. H. Tönhardt (furtherReferee).

Subjects/Keywords: lameness; ruminal fluid pH; dairy cows; laminitis;

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Loof-Siercks, W. (2004). Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/12157

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Loof-Siercks, Wiebke. “Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows.” 2004. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/12157.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Loof-Siercks, Wiebke. “Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows.” 2004. Web. 16 Jan 2021.

Vancouver:

Loof-Siercks W. Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2004. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/12157.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Loof-Siercks W. Investigations into the influence of the acid-base-status on the incidence of claw diseases of dairy cows. [Thesis]. Freie Universität Berlin; 2004. Available from: https://refubium.fu-berlin.de/handle/fub188/12157

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

19. Geiger, Hauke. Influence of higher energy and/or protein density in the close-up ration on milk yield, fertility, health and survival rate of primiparous cows during early lactation.

Degree: 2007, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/13102

► The influence of a differentiated energy and protein supply in the last three weeks ante par-tum on the body condition development, milk production, fertility, health… (more)

▼ The influence of a differentiated energy and protein supply in the last three weeks ante par-tum on the body condition development, milk production, fertility, health and colostrums qual-ity was determined at 339 heifers of the Holstein Friesian race. 184 heifers got a standard TMR ration 14 days before expected date of parturition. 155 heifers got a standard TMR ra-tion plus one out of eight ration additives 21 days before the expected date of parturition. These were (1.) 2 kg corn groats, (2.) 2 kg soybean groats, (3.) 100 g urea, (4.) 2 kg triticale groats, (5.) 1 kg triticale groats + 1 kg soybean groats, (6.) 1 kg corn groats + 1 kg soybean groats, (7.) 2 kg triticale groats + 100 g urea, (8.) 2 kg corn groats + 100 g urea. All heifers were fed the same diet after calving. The research last from 42 days ante partum till 200 days post partum. At different points in time antepartum and postpartum the back fat thickness, the body weight and the withers height were measured. Blood samples were collected directly after calving for determination of different clinical of chemical investigation sizes. The investigation covered the following parameters: calcium, phosphate, magnesium, aspartate- aminotransferase, glutamate- dehydrogenase, creat-inkinase, ß- hydroxybutyrate, bilirubin, urea and cholesterin. Also directly after calving an evaluation of the colostrums quality and udder size was made. Further the milk yield, milk content and fertility parameters were entered. With a documenta-tion of the heifers` diseases and exit causes the health of the heifers could be judged. Retrospectively the heifers were put into different groups according to a different length of close-up-period to see the influence of the length of close-up-period. With a different energy and protein feeding in the last three weeks before parturition and a different length of the close-up period there was no different development in body condition. All in all the heifers of the farm showed a good condition with a back fat thickness of 20mm. Heifers with the biggest back fat thickness at the time of parturition had the highest rate of lipolyse during the first 4 weeks of lactation. There were no significant differences for milk production, fertility and metabolic health be-tween heifers with or without an energy or protein feeding. The blood parameters were greatly in the reference area. Heifers with a close-up-period of more than 21 days reached a 100-days-milk production which was 206 kg higher than the one of heifers with a close-up-period less than 14 days, however, with less substances of content of the milk. There was no significant difference in fertility and metabolic health. A better colostrum quality could be reached in the group fed with corn groats + soybean groats and corn groats + urea. Higher body weight ante partum had more influence to milk yield than the back fat thickness. Advisors/Committee Members: n (gender), Univ.- Prof. Dr. R. Staufenbiel (firstReferee), Univ.- Prof. Dr. H. Hartmann (furtherReferee), Prof. Dr. K. Männer (furtherReferee).

Subjects/Keywords: dairy-cows; heifers; animal-nutrition; milk yield; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Geiger, H. (2007). Influence of higher energy and/or protein density in the close-up ration on milk yield, fertility, health and survival rate of primiparous cows during early lactation. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/13102

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Geiger, Hauke. “Influence of higher energy and/or protein density in the close-up ration on milk yield, fertility, health and survival rate of primiparous cows during early lactation.” 2007. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/13102.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Geiger H. Influence of higher energy and/or protein density in the close-up ration on milk yield, fertility, health and survival rate of primiparous cows during early lactation. [Internet] [Thesis]. Freie Universität Berlin; 2007. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/13102.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Geiger H. Influence of higher energy and/or protein density in the close-up ration on milk yield, fertility, health and survival rate of primiparous cows during early lactation. [Thesis]. Freie Universität Berlin; 2007. Available from: https://refubium.fu-berlin.de/handle/fub188/13102

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

20. Moeller, Martina. In vitro studies on isolated epithelium of pig pars proventricularis.

Degree: 1998, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/13914

► The pars proventricularis is a region at the entrance of pig stomach, with a keratinized stratified squamous epithelium. In this proximal part of the stomach… (more)

▼ The pars proventricularis is a region at the entrance of pig stomach, with a keratinized stratified squamous epithelium. In this proximal part of the stomach pathological alterations and ulcers are found often. They impair the fitness of affected animals negatively and possibly can lead to death of the pigs. Due to very few publications little is known about the physiological functions of this epithelium and the pathogenesis of the lesions is still obscure. Therefore, the aim of this study was to characterize the physiological functions of this tissue and to examine whether it is practicable to use an in vitro method to study possible etiological mechanisms. Isolated epithelia of slaughtered pigs were used to determine electrophysiological and transportphysiological parameters with the Ussing- chamber technique. The following results were obtained: * Healthy and pathologically affected epithelia differ with regard to the electrophysiological parameters. The conductance (GT) of intact tissues amounts to less than 1 mS·cm-2. Consequently this epithelium has to be classified as tight. The short circuit current (ISC) and the GT of the affected tissues are considerably increased. * Healthy as well as damaged epithelia show a positive short circuit current which is mainly based on the transport of sodium. * Both, healthy and affected epithelia show a net absorption of sodium. The sodium transport of damaged epithelia is increased. * The addition of oubain, amiloride and histamine reduces the ISC. * The transport of Cl, mannitol and JNasm through the epithelium occurs on a passive and presumably on a paracellular route. There exists no net transport of chloride. * The increased conductance of damaged epithelium is mainly based on enhanced paracellular conductance. This epithelium becomes more leaky. Consequently, its barrier function is reduced. * A mucosal pH of 2.0 hardly influences the function of normal epithelium, whereas the electro-physiological parameters of affected epithelium are deteriorated immensely. * When kept in housing conditions with straw pigs have a normal epithelium with a low GT. Housing conditions without straw cause serious lesions of the epithelium within a few days. The results clearly showed that in vitro investigations can contribute to the knowledge about the etiology of pig gastric ulcer. It is easy to distinguish between healthy and damaged epithelia. The studies demonstrated that husbandry conditions without straw may lead to serious damages in the pars proventricularis of pigs. Although the growth rates of pigs are not inevitably reduced the lesions of the epithelium impair the well-being and health of affected animals. Therefore housing conditions of pigs without straw should be discussed as a matter of animal welfare. Advisors/Committee Members: n (gender), Prof.%20Dr.%20H.%20Martens%22%29&pagesize-30">Univ.-Prof. Dr. H. Martens (firstReferee), Prof.%20Dr.%20K.H.%20Lahrmann%22%29&pagesize-30">Univ.-Prof. Dr. K.H. Lahrmann (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: physiology; mucosa; stomach; stomach-ulcers; pigs; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moeller, M. (1998). In vitro studies on isolated epithelium of pig pars proventricularis. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/13914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moeller, Martina. “In vitro studies on isolated epithelium of pig pars proventricularis.” 1998. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/13914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moeller, Martina. “In vitro studies on isolated epithelium of pig pars proventricularis.” 1998. Web. 16 Jan 2021.

Vancouver:

Moeller M. In vitro studies on isolated epithelium of pig pars proventricularis. [Internet] [Thesis]. Freie Universität Berlin; 1998. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/13914.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moeller M. In vitro studies on isolated epithelium of pig pars proventricularis. [Thesis]. Freie Universität Berlin; 1998. Available from: https://refubium.fu-berlin.de/handle/fub188/13914

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

21. Montag, Nicole. Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows.

Degree: 2005, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/11529

► The aim of this study was to get further information about the influence of different factors to the effect of anionic rations, to optimize the… (more)

▼ The aim of this study was to get further information about the influence of different factors to the effect of anionic rations, to optimize the use of anionic salts in the prevention of milk fever of dairy cows. These factors are the influence of a prolonged administration of anions, of different energy and calcium supply, the effects of the sodium-potassium relation, the maximal tolerated dose of calcium sulfate as well as the investigation about the application of the daily dose of calcium chloride and calcium sulfate once a day. From february 2003 to march 2004 the investigations were performed on cows with rumen fistula. During the trials the animals got the acid salts calcium chloride and calcium sulfate through the rumen fistula twice a day at the feedings (except for the trial about the once a day application and the trial with sodium- and potassium bicarbonate). Several times a week blood and urine samples were taken to determine the blood gas analysis (ph, be, CO2, O2) as well as the net acid-base excretion. For each trial the feed was analysed and the dcad of the ration was measured. In all 1401 blood and urine samples have been taken and examined. The prolonged administration of anions showed, that the entire effect of the anionic salts is completely developed after 3 7 days. A significant metabolic acidosis set in. The values of ph, be and bicarbonate of the blood decreased. In the urine the effect of the acidosis was observed as well. There was a significant decrease in ph and nsba. Because of the fact, that the complete effects are developed within 3 7 days, and because of the risk of strong disturbances of the acid-base equilibrium, the use of the acid salts should last 7 days at least, but not longer than 14 days. The results of the investigation about the different energy supply showed, that the concentration of energy should be sufficient to avoid a further increase of the acidosis by the metabolic products, which result from the degradation of fatty and amino acid at catabolism. The degree of the calcium supply had no significant influence of the impact of the anionic salts relating to the acid-base status. Never the less, when feeding acid salts, it is very important to supply calcium in sufficient amount (120 180g/d), because of the strong renal calcium excretion. The investigation of the impact of sodium and potassium showed, that cations can counteract and compensate the effects of the anions and with it the mechanism of the prophylaxis of milk fever. The application of anions and cations in equivalent amounts at the same time had no effect of the acid-base-balance. The exclusive use of sodium- and potassium bicarbonate did not show the expected alkaline effects. The investigation of the maximal tolerated dose of calcium sulfate showed, that the cows developed a strong metabolic acidosis after one week of application of 3 equivalents of calcium sulfate. Because of that, the dose of 3 equivalents should not be exceeded. It is better to think of 2,5 equivalents as upper limit. The… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. H. Tönhardt (furtherReferee), Prof.%20Dr.%20G.%20Hildebrandt%22%29&pagesize-30">Univ.-Prof. Dr. G. Hildebrandt (furtherReferee).

Subjects/Keywords: dairy cow; hypocalcemic parturient paresis; dietary cation-anion balance; acid-base status; anionic salts; calcium chloride; calcium sulfate; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Montag, N. (2005). Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/11529

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Montag, Nicole. “Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows.” 2005. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/11529.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Montag, Nicole. “Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows.” 2005. Web. 16 Jan 2021.

Vancouver:

Montag N. Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2005. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/11529.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Montag N. Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows. [Thesis]. Freie Universität Berlin; 2005. Available from: https://refubium.fu-berlin.de/handle/fub188/11529

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

22. Goebbels, Michael. Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds.

Degree: 2006, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/12567

► The aim of this study was to find a solution how to valuate the effect of anionic rations with herd datas and to make the… (more)

▼ The aim of this study was to find a solution how to valuate the effect of anionic rations with herd datas and to make the use of anions safer. The first part of the study shows the examinations about the practical use of the measurement of urine ph to valuate the effects of anions on the acid-base status. For that purpose, samples of urine were taken for eight weeks from the two weeks prepartum cows of two different farms. The ph was measured with an electrical ph-meter in the cowshed and with ph-stripes directly after the winning. Apart from that, the urine was frozen and after defrosting measured with an electrical ph-meter in the lab. The measurement of the ph by ph- stripes showed nearly the similar results than the measurement of the urine ph by electrical ph-meter directly after the winning. After defrosting the urine, the results of the urine ph were slightly increased. Within the scope of herd management fifty farms were visited and some of them more than one time. Blood and urine samples were taken from close up dry cows and recently calved cows. The ration of the close up dry cows was analysed. Ten single samples of blood and urine were necessary to produce a pool sample. The values of the pool samples of urine ph, net acid-base excretion and urine calcium excretion were compared with the mean values of the single samples. There were high correlations between the pool and the mean values for each of the parameters. Because of that, the pool and the mean values have nearly the same content of information. The analyses of the rations from 2002 to 2004 contain the dcad and the amount of potassium, sodium, chloride and sulphur. Herds with and without anionic rations were compared. The analysis of the feed of herds with anionic rations showed a lower dcad and a higher amount of sulphur in all of the three years. But the recommendations of the NRC were not achieved. That is an indication that not enough anionic salts were used refer to the rations content. To examine the influence of more factors of the ration on the effect of the anions the urine ph, the net acid-base excretion and the urine calcium excretion were compared with the parameters of the rations. The effect of reducing the dcad and the amount of potassium as well as the effect of increasing the amount of calcium and sulphur in the ration is a mild acidosis and an increased urine calcium excretion. These are the effects of the anions. Within feeding anions there should be a shift of the major elements. This leads to a decreased dcad and to the metabolic effects as described. The same effects on the acid-base status and the urine calcium excretion were observed by feeding an increased amount of starch and a decreased amount of crude fibre. This could simulate the effect of anionic rations. The parameters of the energy concentration in the rations have a slight correlation with the parameters of the acid-base status. At low amounts of energy there is an acidotic stress of the animals. This has to be avoided when farmers use anionic rations because it… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. H. Tönhardt (furtherReferee), Prof.%20Dr.%20R.%20Fries%22%29&pagesize-30">Univ.-Prof. Dr. R. Fries (furtherReferee).

Subjects/Keywords: dairy cow; hypocalcemic parturient paresis; dietary cation-anion balance; acid-base status; anionic salts; major elements; metabolic profile; herd management; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Goebbels, M. (2006). Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/12567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Goebbels, Michael. “Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds.” 2006. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/12567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Goebbels, Michael. “Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds.” 2006. Web. 16 Jan 2021.

Vancouver:

Goebbels M. Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds. [Internet] [Thesis]. Freie Universität Berlin; 2006. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/12567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Goebbels M. Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds. [Thesis]. Freie Universität Berlin; 2006. Available from: https://refubium.fu-berlin.de/handle/fub188/12567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

23. Wenning, Peter. Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows.

Degree: 2008, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/11431

► For many years the application of feed enzymes to monogastric farm animals such as pigs and poultry has been utilized for purposes such as the… (more)

▼ For many years the application of feed enzymes to monogastric farm animals such as pigs and poultry has been utilized for purposes such as the reduction of the anti-nutritive effects of NSP or to enable a better utilization of animal feed. In the present study, the impact of a supplementation of a cellulase and an α-amylase on some performance parameters of dairy cows were examined. The trial was conducted on a commercial dairy farm and on a total of 416 animals divided into two groups (209 test- and 207 control-animals). Supplementation of the enzymes started on day 21 a.p. in both groups and continued for a total of 150 days in the test group while in the control group supplementation was discontinued after calving. The enzymes were separately sprayed on the total mixed ration (TMR) right before feeding. Study parameters included milk performance and milk composition, body condition (Back Fat Thickness-(BFT) measuring 56, 28 days a.p. and 3, 28, 56, 98, 140 days p.p.), serum concentration of bilirubin, cholesterol, urea, aspartat-amino transferase, non esterified fatty acids (NEFA) and ß-OH-butyrate (8 days a.p. and 3, 28, 56, 98, 140 days p.p.), reproduction parameters and the incidence of parturient paresis, dislocation of the abomasum and mastitis. In the first 30 days p.p., the test group of cows had a significantly higher milk performance compared to the control, although the accumulated milk performance of 150 days did not differ significantly. The observation of the higher milk yield in the beginning lactation has to be questioned because of the concept of the experiment. Overall, Milk composition did not differ except for significantly lower protein content in the test group at the milk performance tests (MLP) between 61 and 150 days post partum. The development of body condition (BFT) and blood parameters after calving support the assumption of an intense and long lasting negative energy balance (NEB). In the control- group, an average decrease of body condition could be observed up to the end of the trial, whereas animals of the test-group gained some BFT between the measurements on days 98 and 140 post partum. During this time slice a significantly higher BFT value could be found in the test-group compared to the control group. Blood analysis did not show big differences between the groups, although a slight tendency for a better metabolic status of the test- group could be observed. The differences in the reproduction parameters between the groups were not significant. Concerning the incidences of parturient paresis and mastitis there were no differences between the groups; the incidence of dislocation of the abomasum was significantly lower in the test-group. Independent of enzyme supplementation some additional and interesting observations between BFT-development, milk performance, NEFA- concentration and days open could be made: animals, showing a high mobilization of body fat had a higher milk performance in the first 98 days of lactation compared to cows mobilizing significantly less. The latter… Advisors/Committee Members: n (gender), Prof.%20Dr.%20H.%20Martens%22%29&pagesize-30">Univ.-Prof. Dr. H. Martens (firstReferee), Prof.%20Dr.%20O.%20Simon%22%29&pagesize-30">Univ.-Prof. Dr. O. Simon (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: dairy cows; feed supplements; enzymes; alpha amylase; cellulose; dairy performance; milk composition; body condition; energy balance; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wenning, P. (2008). Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/11431

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wenning, Peter. “Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows.” 2008. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/11431.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wenning, Peter. “Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows.” 2008. Web. 16 Jan 2021.

Vancouver:

Wenning P. Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows. [Internet] [Thesis]. Freie Universität Berlin; 2008. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/11431.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wenning P. Impact of a Supplementation of Non-Starch-Polysacchararide (NSP)-hydrolyzing Enzymes and an α-Amylase on some Performance Parameters of Dairy Cows. [Thesis]. Freie Universität Berlin; 2008. Available from: https://refubium.fu-berlin.de/handle/fub188/11431

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

24. Klein, Bärbel. Investigation in blood serum concentration of B vitamins of dairy cows.

Degree: 2006, Freie Universität Berlin

URL: https://refubium.fu-berlin.de/handle/fub188/12494

► The concentration of vitamine B1, B12 and folic acid in serum, which is released from protein, were analysed by high pressure liquid chromatography. The analysis… (more)

▼ The concentration of vitamine B1, B12 and folic acid in serum, which is released from protein, were analysed by high pressure liquid chromatography. The analysis were done with a chromatogaph, made by Dr. Ing. H. Knauer GmbH, Berlin. Instrumentation: Dr. Ing. H. Knauer GmbH, scientific instruments, 14163 Berlin Detektion: UV, K-2501 Column: Sperimage-80, ODS2, QE 125 Eluent A: Methanol Eluent B: Ion exchange solution: Dodecan-1-sulfonacid-sodium Software: ChromGate, chromatogrphy data systems The method of analysing vitamins B1, B12 and folic acid in standard solution is successfully established. HPLC provided the potential for the simultaneous quantitation of vitamin B1, B12 and folic acid. The analysis of bovine serum failed by limit of detection. The sensitivity of the UV-detection was 100 mg/l for folic acid, 20 mg/l for vitamine B1 and 20 mg/l for vitamine B12. With these detection conditions folic acid must be concentrated to 104, vitamin B1 to 103 and vitamin B12 to 105. This is not possible with the instrumentation used in this study. In the here presented field study the blood serum concentration of the vitamins B1, B12 and folic acid in dairy cows were investigated. The size of the herds varied from 150 to 3500 cows. Blood and milk samples were taken one or three times. During every visit information about keeping, feeding and health of the livestock has been evaluated and documented in a form sheet. For the study only animals were used, who showed no clinical signs of desease. They represented the average. Depending on the state of lactation the selected cows were divided in five groups: group 1 cows from 8 to 3 week a.p. group 2 cows from 3 to 1 week a.p. group 3 cows from 0 to 1 week p.p. group 4 cows from 3 to 5 week p.p. group 5 cows from 15 to 18 week p.p. In every group a pool value consisting of ten single samples has been made. The information content of the pool samples correspond the mean, which is calculated from ten single values. Therefore the bloodserum was analysed by established methods. Folic acid and vitamin B12 were analysed simultaneous by radioimmunoassay. After derivatisation vitamin B1 is measured by HPLC/fluorimetrical detection. Neither in blood nor in serum vitamin B1 shows a significant difference according to the stage of lactation. From 3 weeks after calving the concentration of vitamin B12 went down significantly below the reference values. This might be resulting from an inadequate provision with cobalt or a secondary lack of cobalt, caused by too high provision with potassium, or it could be a clue to a rumen malfunction. The information content of the vitamine B12 concentration in milk corresponds to the mean from the vitamin B12 concentration in serum. Biotin shows a significant difference according to the stage of lactation. Specially cows in an early state of lactation have a concentration of biotin which is below the literature reference value discussed in the standard literature. The concentration of folic acid significantly goes down when cows are in early lactation… Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. K. Männer (furtherReferee), Prof.%20Dr.%20W.%20M%C3%83%C2%BCller%22%29&pagesize-30">Univ.-Prof. Dr. W. Müller (furtherReferee).

Subjects/Keywords: B12; B1; folic acid; HPLC;

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Klein, B. (2006). Investigation in blood serum concentration of B vitamins of dairy cows. (Thesis). Freie Universität Berlin. Retrieved from https://refubium.fu-berlin.de/handle/fub188/12494

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Klein, Bärbel. “Investigation in blood serum concentration of B vitamins of dairy cows.” 2006. Thesis, Freie Universität Berlin. Accessed January 16, 2021. https://refubium.fu-berlin.de/handle/fub188/12494.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Klein, Bärbel. “Investigation in blood serum concentration of B vitamins of dairy cows.” 2006. Web. 16 Jan 2021.

Vancouver:

Klein B. Investigation in blood serum concentration of B vitamins of dairy cows. [Internet] [Thesis]. Freie Universität Berlin; 2006. [cited 2021 Jan 16]. Available from: https://refubium.fu-berlin.de/handle/fub188/12494.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Klein B. Investigation in blood serum concentration of B vitamins of dairy cows. [Thesis]. Freie Universität Berlin; 2006. Available from: https://refubium.fu-berlin.de/handle/fub188/12494

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

25. Kaepke, Maren. Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia.

Degree: 2002, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-5208

► Respiratory tract disease causes great financial losses in the cattle industry. The objective of this study was to evaluate the ability of the two acuteýphaseýproteins… (more)

▼ Respiratory tract disease causes great financial losses in the cattle industry. The objective of this study was to evaluate the ability of the two acuteýphaseýproteins haptoglobin and fibrinogen to determine severity of inflammation, to control treatment success and to predict course of disease in calves with pneumonia. Calves with respiratory tract disease (n=147) and healthy calves (n=43) were examined on five days (day 0, 1, 2, 3, 7). The calves were 2 to 6 weeks old. Clinical parameters such as body temperature, respiration rate and a clinical score were determined. Blood samples to analyse the proteins were collected. Ultrasound was used to determine the extent of lung inflammation. After first examination the diseased calves were divided into three different treatment groups (group 1: florfenicol [20mg/kg, 2x in 48h], group 2: oxytetracycline [5mg/kg, 3x every 24h] and group 3: florfenicol [20mg/kg, 2x in 48h] and flunixin-meglumin [2,2mg/kg, 1x on first treatment day]). Fibrinogen was analysed by a coagulation method modified by Clauss (1959) and haptoglobin by measuring the peroxidase activity of the haemoglobin- haptoglobin-complex. The protein concentrations differed significantly (p<0,01) between diseased and healthy calves. On the first day the diseased calves had an average haptoglobin concentration of 0,324 (95% C.I.: 0,266 ý 0,394) mg/ml and on the second day a concentration of 0,347 (95% C.I.: 0,291 ý 0,412) mg/ml. On day seven the haptoglobin concentration declined to 0,063 (95% C.I.: 0,043- 0,094) mg/ml in the diseased group. The healthy calves had an average haptoglobin concentration of 0,061 (95% C.I.: 0,033 ý 0,114) mg/ml on the first day and of 0,042 (95% C.I.: 0,021-0,086) mg/ml on the second day. The concentration of fibrinogen was 526,1 ± 159,6 mg/dl on first day in the diseased group and 547,6 ± 145,2 mg/dl on second day. On day seven the fibrinogen concentration declined to 431,1 ± 118,3 mg/dl in the diseased calves. The healthy calves showed an average fibrinogen concentration of 360 ± 106 mg/dl on day one and of 368 ± 122 mg/dl on day two. As expected all clinical parameters differed significantly between the diseased and healthy calves on day one. The clinical score was significantly higher in the diseased group than in the healthy group on all days. Only limited differences were found between the two groups with sonographic examination. There were significant correlations between haptoglobin and fibrinogen concentrations. The protein concentrations also correlated significantly with the clinical parameters on the respective days. After treatment the protein concentrations declined. Significant differences in the concentration of acute-phase-proteins were found between the three treatment groups on day seven, but they had no effect on the clinical outcome. The clinical score on the first day proved to be the best prognostic indicator for treatment success or for course of disease. The acute-phase-proteins showed only limited potential to predict the… Advisors/Committee Members: n (gender), Prof.%20Dr.%20W.%20Heuwieser%22%29&pagesize-30">Univ.-Prof. Dr. W. Heuwieser (firstReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee), Prof.%20Dr.%20H.%20Hartmann%22%29&pagesize-30">Univ.-Prof. Dr. H. Hartmann (furtherReferee).

Subjects/Keywords: Haptoglobins; Fibrinogen; Pneumonia; Calves; Ultrasound; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kaepke, M. (2002). Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-5208

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kaepke, Maren. “Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia.” 2002. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-5208.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kaepke, Maren. “Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia.” 2002. Web. 16 Jan 2021.

Vancouver:

Kaepke M. Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia. [Internet] [Thesis]. Freie Universität Berlin; 2002. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-5208.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kaepke M. Evaluation of the acute-phase-proteins haptoglobin and fibrinogen in calves with pneumonia. [Thesis]. Freie Universität Berlin; 2002. Available from: http://dx.doi.org/10.17169/refubium-5208

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

26. Kremer, Joachim. Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle.

Degree: 2009, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-7472

► The glucose tolerance test has been carried on 28 female cattle during five different fasting periods to test the starving behaviour. First test started in… (more)

▼ The glucose tolerance test has been carried on 28 female cattle during five different fasting periods to test the starving behaviour. First test started in spring with 28 heifers (Holstein and Holstein–Friesian breedings). A repetition proceeding have bee carried out in autumn same year on 28 pregnant cattle (Holstein and Holstein-Friesian breedings). Five different fasting periods have been used. Every animal group had to starve for 0, 12, 24, 36 and 48 hours per each week. To test the insulin response and the glucose reaction were used the body weight, basal glucose– and insulin concentration, maximal glucose– and insulin concentration, corrected maximal glucose– and insulin concentration, glucose– and insulin area, corrected glucose– and insulin area, end concentration of glucose and insulin and corrected end concentration of glucose– and insulin. Further were used the glucose– and insulin half-life and the moment when the maximal insulin concentration were reached. The corrected version marks the usual test parameter without the basal concentrtation of glucose or insulin. The aim of this study was, including the assessment of the individuel insulin response and glucose reaction under influence of the five different fasting periods, to get a statement about the development of the testing parameters during the repetition proceeding in autumn. This also ensure the extent of spot checks. Under consideration the different fasting times, there was an increase of most of the glucose parameters with the duration of the fasting periods after the glucose loading. Glucose half-life increased after a 0 hours fasting time from 28,0 minutes up to 52,2 minutes after 48 hours starving, the glucose area started with 72,5 (0 hours fasting) and increased up to 88,1 (48 hours fasting). Also the end concentrations of glucose increased from 4,4 mmol/l (0 hours fasting) up to 6,7 mmol/l (48 hours fasting) and maximal concentrations of glucose rised up from 14,1 mmol/l (0 hours fasting) up to 14,7 mmol/l (36 hours fasting), while the maximal glucose concentration decreased for a moment after 48 hours starvation (14,3 mmol/l). The only exception in this study is the basal glucose concentration, which decreased with the duration of the fasting periods (4,5 mmol/l to 3,8 mmol/l). Normaly there was in any cases an distinct increase of the glucose parameters from 12 hours fasting. Between 24 and 36 hours fasting, there were only minor differents between the glucose parameters. There were signifikant differents between both testing proceedings in spring and autumn and most of the glucose parameters. During the second testing proceeding (autumn) the glucose parameters kept on a distinct higher level than during the first testing proceeding (spring). Nevertheless all glucose parameters described the same diagram, but on different level of concentration. This characteristics relates to the differences of life weight (Ø 50 kg) during second testing proceedings and the accordingly daily increase in weight. In this connection, the intensity of… Advisors/Committee Members: n (gender), Univ.- Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. L. Panicke (furtherReferee), Univ.- Prof. Dr. H. Martens (furtherReferee).

Subjects/Keywords: Cattle; dairy cows; heifers; glucose tolerance test; fasting; blood sugar; insulin; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kremer, J. (2009). Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-7472

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kremer, Joachim. “Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle.” 2009. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-7472.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kremer, Joachim. “Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle.” 2009. Web. 16 Jan 2021.

Vancouver:

Kremer J. Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle. [Internet] [Thesis]. Freie Universität Berlin; 2009. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-7472.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kremer J. Influence of the sober time duration on the results of the intravenous glucose tolerance test in young female cattle. [Thesis]. Freie Universität Berlin; 2009. Available from: http://dx.doi.org/10.17169/refubium-7472

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

27. Strommenger, Wencke. Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique.

Degree: 2006, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-13899

► Dental diseases present a frequently appearing problem in equine medicine. The appearing changes at the molar and premolar teeth are normally irreversible. Often the molars… (more)

▼ Dental diseases present a frequently appearing problem in equine medicine. The appearing changes at the molar and premolar teeth are normally irreversible. Often the molars are so massively damaged, that an extraction is unavoidable. Infections lead frequently to the encroachment of the existing infection to the alveolar bone, which will be destroyed and an encroachment of the inflammation on the maxillary sinus becomes possible. Must a molar finally be removed, different techniques are known: the oral extraction, the lateral buccotomy as well as the Repulsion. Each of these techniques owns their before- and disadvantages and therefore not each technology is applicable in each case. For the choice of the surgical technique an exact diagnostic is necessary. While the lateral buccotomy is suitable as latest method, mainly for the premolar teeth, oral extraction, as oldest and simplest method, applies only at old horses with short roots and/or greatly damaged teeth, as well as at the removal of persistent temporary teeth of young horses. Long roots firmly with the alveolus connected in combination with the limited oral access of the equine mouth makes an oral extraction of premolar and molar teeth often impossible. The repulsion through the opened maxillary sinus is likewise a very old method. The opening of the maxillary sinus can happen either by means of trepanation or bone- flap. The difficulty of this technology is situated in the determination the root of the tooth, which should be extracted, because the position of the root must be seted from external face of the equine head on a remembered line after Guenther, et al. (1967). Because above the certain position of the root the maxillary sinus is opened and the punch is put on it blindly. This only inaccurate determination can lead to fatal consequences for the patient, because a damage or maybe a removal of the adjacent tooth is possible. Likewise, through the excessive force which is influencing on the dental punch, the alveolus or the palatine bone might be destructed. The case is different by tooth extraction with application of the intraoperative illumination with the C-arch. This offers the surgeon during the whole surgical procedure the possibility to controll all his operative acts. So among others an exact identification of the tooth which should be removed is possible, as well as the permanent control of the placement of the instrumentarium. By the intraoperative fluoroscopy controll the alveolus can be checked immediately following the tooth extraction on complete removal. If still fragments are found in the tooth socket, these could be removed immediately, without, a renewed general anesthetic. Retained tooth fragments disturb the granulation in the dental socket massively. The remaining dental rests appear fistulation, which make a renewed surgical removal in anaesthesia necessary. The evaluation of the stationary patients confirm, that an improved surgical technique results in avoiding of the above- mentioned intraoperative complications, thus… Advisors/Committee Members: n (gender), Prof.%20Dr.%20B.%20Hertsch%22%29&pagesize-30">Univ.-Prof. Dr. B. Hertsch (firstReferee), Prof.%20Dr.%20L.%20Brunnberg%22%29&pagesize-30">Univ.-Prof. Dr. L. Brunnberg (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: horses; surgery; repulsion; teeth; sinuses; x ray fluorescence; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Strommenger, W. (2006). Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-13899

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Strommenger, Wencke. “Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique.” 2006. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-13899.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Strommenger, Wencke. “Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique.” 2006. Web. 16 Jan 2021.

Vancouver:

Strommenger W. Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique. [Internet] [Thesis]. Freie Universität Berlin; 2006. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-13899.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Strommenger W. Surgical procedures at the maxillary sinuses and upper cheek teeth controlled by the c-arch technique. [Thesis]. Freie Universität Berlin; 2006. Available from: http://dx.doi.org/10.17169/refubium-13899

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

28. Erdmann, Simone. a study of the development and clinical relevance of findings in relation on the radiology manual in 2007.

Degree: 2009, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-8439

► In the present study the development and clinical relevance of the upraised findings is examined within the scope of a clinical and radiological course investigation… (more)

▼ In the present study the development and clinical relevance of the upraised findings is examined within the scope of a clinical and radiological course investigation of the sesamoid bones of the forelimbs of auction candidates of the “Westfälisches Pferdestammbuch e.V.” according to the radiology manual in 2007. In the literature overview first the origin of the x-ray guide is shown and the principles forming the basis of it, as well as a short overview of the radiological anatomy of toes and sesamoid bones. Subsequently the clinical and radiological examination is described within the scope of the purchase in investigation of the horse and the appearance and the relevance of clinical and x-ray changes are explained. The study was carried out with 140 horses of the breeding areas Westphalia and Rhineland rainging in age from six months to 6 years according to the first investigation. Archive data material the clinical, as well as the radiological examinations was available for the evaluation of the first examination. Within the scope of the course investigation all horses could be examined radiologically, but only one part was examined clinically. The data of the clinical investigation were evaluated comparatively, the x-ray pictures were judged with the help of the findings elevation key and the horses were classified accordingly. Besides, special attention was laid to the development of the sesamoid bones findings as well as the classification within the investigation period, taking into account clinical phenomena and the prognostic appraisals given in the radiology manual. In the conclusion the statements upraised within the scope of the investigation are issued concerning the development of radiological findings and their clinical relevance. Thus it could be found out that the majority of the examined horses within the investigation period remained in the x-ray classification started at the beginning. Radiological findings in the sesamoid bones change, but as a rule do so only slowly and without significant deteriorations. The high percentage of clinically lame-free horses should indicate that the x-ray examination and classification should not be the sole basis of a purchase decision of a horse. A high percentage of horses with findings of the class III-IV were successfully used for years without clinical phenomena and findings at deteriorations in sports. Furthermore many different factors indicate that the x-ray image quality influences the x-ray diagnosis to a critical degree and with unclear findings complementary show methods of examination are recommended. The prognostic statements given in the radiology manual to the clinical relevance of findings can be taken over within the scope of this study. Nevertheless, on account of the low number of clinically relevant test animals and the lack of diagnosis position no generally-valid statement can be issued. Another study could achieve this with a bigger test sample and following diagnosis positions with clinical and radiological suspected findings. Advisors/Committee Members: n (gender), Prof.%20Dr.%20B.%20Hertsch%22%29&pagesize-30">Univ.-Prof. Dr. B. Hertsch (firstReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee), Prof.%20Dr.%20L.%20Brunnberg%22%29&pagesize-30">Univ.-Prof. Dr. L. Brunnberg (furtherReferee).

Subjects/Keywords: horses; horse diseases; bone diseases; sesamoid bones; Lameness; diagnostic techniques; radiography; follow-up Studies; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft

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APA (6^th Edition):

Erdmann, S. (2009). a study of the development and clinical relevance of findings in relation on the radiology manual in 2007. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-8439

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Erdmann, Simone. “a study of the development and clinical relevance of findings in relation on the radiology manual in 2007.” 2009. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-8439.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Erdmann, Simone. “a study of the development and clinical relevance of findings in relation on the radiology manual in 2007.” 2009. Web. 16 Jan 2021.

Vancouver:

Erdmann S. a study of the development and clinical relevance of findings in relation on the radiology manual in 2007. [Internet] [Thesis]. Freie Universität Berlin; 2009. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-8439.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Erdmann S. a study of the development and clinical relevance of findings in relation on the radiology manual in 2007. [Thesis]. Freie Universität Berlin; 2009. Available from: http://dx.doi.org/10.17169/refubium-8439

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

29. Bachari, Mostafa. Sheep and Transmissible Spongiforme Enzephalopathie - Data concerning sheep and mutton consumption as necessary background to estimate sheep as TSE risk factor.

Degree: 2003, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-13701

► The retransfer of the zoonotic BSE agent back to the species sheep can not be exluded as yet. In this study, data about husbandry, breeding,… (more)

Subjects/Keywords: Schaf; Transmissible Spongiforme Encephalopathie; Veterinary Public Health; Haltung; Konsum; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bachari, M. (2003). Sheep and Transmissible Spongiforme Enzephalopathie - Data concerning sheep and mutton consumption as necessary background to estimate sheep as TSE risk factor. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-13701

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bachari, Mostafa. “Sheep and Transmissible Spongiforme Enzephalopathie - Data concerning sheep and mutton consumption as necessary background to estimate sheep as TSE risk factor.” 2003. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-13701.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Bachari M. Sheep and Transmissible Spongiforme Enzephalopathie - Data concerning sheep and mutton consumption as necessary background to estimate sheep as TSE risk factor. [Internet] [Thesis]. Freie Universität Berlin; 2003. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-13701.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bachari M. Sheep and Transmissible Spongiforme Enzephalopathie - Data concerning sheep and mutton consumption as necessary background to estimate sheep as TSE risk factor. [Thesis]. Freie Universität Berlin; 2003. Available from: http://dx.doi.org/10.17169/refubium-13701

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Freie Universität Berlin

30. Mischke, André. Qualitative and quantitative macroscopic- and microscopic-anatomical examinations on hearts, kidneys and adrenal glands of Holstein Friesian bulls and heifers.

Degree: 1998, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-10163

► The present examinations has been performed on 69 Holstein Friesian bulls and heifers in the age between 18 and 36 months, to show macroscopic- and… (more)

▼ The present examinations has been performed on 69 Holstein Friesian bulls and heifers in the age between 18 and 36 months, to show macroscopic- and microscopic-anatomical dates of the hearts, kidneys and adrenal glands. Age- and sex-dependent questions were discussed. Among the heifers three age related classifications were made. The special interests of the microscopic- anatomical evaluation are the description possibly correlations as a reflection of the renin-angiotensin-aldosteron-system and the atriale natriuretic peptide. The macroscopic- and microscopic-anatomical dates show for the entire sample numerous age- and sex-dependent differences. Between the macroscopic and microscopic-anatomical dates existing in both sexes and in the heifer age group correlative connections. The bulls show in the right atrium-wall a larger nucleus volume, whereas heifers exhibit a significant greater intramyocardial connective tissue. The kidneys show sex-unrelated larger cortical renal corpuscles compared to the juxtamedullary renal corpuscles. The renal corpuscles volume in the cortical and juxtamedullary zone increase with age, the corpuscles density decrease in both zones. The distance of the first ten to the cortex renalis localized corpuscles, will be age related larger. Sex-related differences in the microscopic-anatomical kidney dates are seldom proved. The bulls show larger nuclei-volume of the zona glomerulosa cells, compared to the heifers. Between the microscopic-anatomical dates numerous correlative relations are shown. In the heifer group it was found on the light microscopic level an slight indication to hormonal correlations between the intramyocardial connective tissue and the size of the cortical glomerulus. The correlation coefficient seems to reflect a cause-effect relation between hypertension as an result of the renin-angiotensin-aldosteron-system and the microscopic- anatomical structures. Advisors/Committee Members: n (gender), Prof.%20Dr.%20R.%20Berg%22%29&pagesize-30">Univ.-Prof. Dr. R. Berg (firstReferee), Prof.%20Dr.%20H.%20T%C3%83%C2%B6nhardt%22%29&pagesize-30">Univ.-Prof. Dr. H. Tönhardt (furtherReferee), Prof.%20Dr.%20R.%20Staufenbiel%22%29&pagesize-30">Univ.-Prof. Dr. R. Staufenbiel (furtherReferee).

Subjects/Keywords: heart; kidney; adrenal glands; morphology; cattle; 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mischke, A. (1998). Qualitative and quantitative macroscopic- and microscopic-anatomical examinations on hearts, kidneys and adrenal glands of Holstein Friesian bulls and heifers. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-10163

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mischke, André. “Qualitative and quantitative macroscopic- and microscopic-anatomical examinations on hearts, kidneys and adrenal glands of Holstein Friesian bulls and heifers.” 1998. Thesis, Freie Universität Berlin. Accessed January 16, 2021. http://dx.doi.org/10.17169/refubium-10163.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vancouver:

Mischke A. Qualitative and quantitative macroscopic- and microscopic-anatomical examinations on hearts, kidneys and adrenal glands of Holstein Friesian bulls and heifers. [Internet] [Thesis]. Freie Universität Berlin; 1998. [cited 2021 Jan 16]. Available from: http://dx.doi.org/10.17169/refubium-10163.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mischke A. Qualitative and quantitative macroscopic- and microscopic-anatomical examinations on hearts, kidneys and adrenal glands of Holstein Friesian bulls and heifers. [Thesis]. Freie Universität Berlin; 1998. Available from: http://dx.doi.org/10.17169/refubium-10163

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations