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You searched for subject:(hypocalcemic parturient paresis). Showing records 1 – 2 of 2 total matches.

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Freie Universität Berlin

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

Degree: 2006, Freie Universität Berlin

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), Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. H. Tönhardt (furtherReferee), 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 (6th 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 (16th Edition):

Goebbels, Michael. “Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds.” 2006. Thesis, Freie Universität Berlin. Accessed March 03, 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 (7th Edition):

Goebbels, Michael. “Investigation for the practical use of anionic rations to prevent hypocalcemia in dairy herds.” 2006. Web. 03 Mar 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 Mar 03]. 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

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

Degree: 2005, Freie Universität Berlin

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), Univ.-Prof. Dr. R. Staufenbiel (firstReferee), Prof. Dr. H. Tönhardt (furtherReferee), 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

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th 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 (16th 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 March 03, 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 (7th Edition):

Montag, Nicole. “Experimental investigation of the effects of different anionic salts to the acid-base balance of dairy cows.” 2005. Web. 03 Mar 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 Mar 03]. 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

.