subject:(heifers)

Oregon State University

1. Schubach, Kelsey M. Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers.

Degree: MS, Animal Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59743

► The following experiment presented herein compared growth, physical activity, stress-related responses, and puberty attainment in heifers reared on high- (HIDENS) or low-stocking densities (LOWDENS). Sixty… (more)

▼ The following experiment presented herein compared growth, physical activity, stress-related responses, and puberty attainment in heifers reared on high- (HIDENS) or low-stocking densities (LOWDENS). Sixty Angus x Hereford heifers were ranked by age and BW (210 ± 2 d and 220 ± 2 kg, respectively) on d 0, and assigned to: a) 1 of 3 drylot pens (10 × 14 m pens; 10 heifers/pen) resulting in a stocking density of 14 m²/heifer (HIDENS; n = 3), or b) 1 of 3 pastures (25-ha pastures; 10 heifers/pasture), resulting in a stocking density of 25,000 m²/heifer (LOWDENS; n = 3). Pastures utilized herein were harvested for hay prior to the beginning of this experiment, and negligible forage was available for grazing to LOWDENS heifers throughout the experimental period (d 0 to 182). Heifers received the same limit-fed diet during the experiment, which averaged (DM basis) 4.0 kg/heifer daily of alfalfa-grass hay and 3.0 kg/heifer daily of a corn-based concentrate. Heifer shrunk BW was recorded after 16 h of feed and water withdrawal on d -3 and d 183 for ADG calculation. On d 0, heifers were fitted with a pedometer fixed behind their right shoulder. Each week during the experiment, pedometer results were recorded and blood samples were collected for puberty evaluation via plasma progesterone. Plasma samples collected on d 0, 28, 56, 84, 112, 140, 161, and 182 were also analyzed for concentrations of cortisol and IGF-I. On d 28, 102, and 175, blood samples were also collected for RNA isolation and analysis of heat shock protein (HSP) 70 and HSP72 mRNA expression. On d 0, 49, 98, 147, and 182, hair samples were collected from the tail switch for analysis of hair cortisol concentrations. No treatment effects were detected (P = 0.66) for heifer BW or ADG. Heifers from LOWDENS had more (P < 0.01) steps/week compared with HIDENS. Heifers from LOWDENS had greater (P = 0.05) mRNA expression of HSP72, and tended (P = 0.10) to have greater mRNA expression of HSP70 compared with HIDENS. Plasma concentrations of cortisol and IGF-I were often greater (P ≤ 0.05) in LOWDENS vs. HIDENS heifers (treatment × day interaction; P < 0.01). Hair cortisol concentrations were greater (P < 0.01) for HIDENS vs. LOWDENS heifers beginning on d 98 (treatment × day interaction; P < 0.01). Heifers from HIDENS experienced delayed puberty attainment and had a lower (P < 0.01) proportion of pubertal heifers on d 182 compared with LOWDENS (treatment × day interaction; P < 0.01). In summary, HIDENS negatively impacted heifer stress-related and physiological responses, and delayed puberty attainment compared with LOWDENS. Advisors/Committee Members: Cooke, Reinaldo (advisor), Bohnert, David (committee member).

Subjects/Keywords: beef heifers; Heifers – Development

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

APA (6^th Edition):

Schubach, K. M. (2016). Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59743

Chicago Manual of Style (16^th Edition):

Schubach, Kelsey M. “Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers.” 2016. Masters Thesis, Oregon State University. Accessed December 06, 2019. http://hdl.handle.net/1957/59743.

MLA Handbook (7^th Edition):

Schubach, Kelsey M. “Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers.” 2016. Web. 06 Dec 2019.

Vancouver:

Schubach KM. Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/1957/59743.

Council of Science Editors:

Schubach KM. Impacts of Stocking Density on Development and Puberty Attainment of Replacement Beef Heifers. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59743

Montana State University

2. Whitehurst, William Ashley III. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.

Degree: College of Agriculture, 2012, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/2533

► Objectives of this experiment were to compare rate and efficiency of gain, and conception rates of yearling heifers supplemented with Cu, Zn and Mn as… (more)

▼ Objectives of this experiment were to compare rate and efficiency of gain, and conception rates of yearling heifers supplemented with Cu, Zn and Mn as either methionine chelated trace mineral (CTM) or the same minerals in SO 4 form. The experimental design utilized 3 ranches, each having 2 replications per treatment with pen as the experimental unit for ADG, DMI and G:F. Heifer was the experimental unit for pregnancy rates. Ranch 1 contained 498 Angus heifers, ranch 2, 236 Red Angus cross heifers, and ranch 3, 1,742 Angus cross heifers. All heifers were fed silage based diets that contained approximately 13.5% CP, 64% TDN (DM basis) and had low levels of SO 4, Mo or Fe in feed or H 2O. Diets contained 24 ppm Cu, 70 ppm Zn and 64 ppm Mn. Supplements were fed for 181 d (Ranch 1), 149 d (Ranch 2) and 151 d (Ranch 3) prior to breeding. Heifers were weighed at trial initiation (BW 270 kg ± 2.8), end of drylot feeding, at breeding and at pregnancy diagnosis. Ranch 1 heifers were bred by AI followed by natural service (45 d breeding), Ranch 2 heifers were bred by natural service (50 d breeding) and Ranch 3 heifers were bred by AI once. Pregnancy was determined via ultrasound. Ranch effects were significant (P < 0.001) for gain, ADG, G:F and overall pregnancy rate, but not for conception in the first 21 d. No ranch x treatment interactions were detected for any measurements (P e 0.47) and no differences (P e 0.46) were detected between treatments for total gain, ADG, G:F or the number of heifers that conceived during the first 21 d on Ranches 1 or 2. Conception rate increased (P = 0.03) for CTM heifers from ranch 3 with one AI breeding. Across ranches, conception rates during the first 21 d of breeding did not differ (P = 0.12) between treatments but overall pregnancy rate was greater (P = 0.05) for heifers supplemented with CTM. Under the conditions of this experiment results suggest that supplementation with CTM contributed to greater pregnancy rates in heifers. Advisors/Committee Members: Chairperson, Graduate Committee: John Paterson. (advisor).

Subjects/Keywords: Heifers.; Minerals.

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APA (6^th Edition):

Whitehurst, W. A. I. (2012). Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/2533

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):

Whitehurst, William Ashley III. “Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.” 2012. Thesis, Montana State University. Accessed December 06, 2019. https://scholarworks.montana.edu/xmlui/handle/1/2533.

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

MLA Handbook (7^th Edition):

Whitehurst, William Ashley III. “Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.” 2012. Web. 06 Dec 2019.

Vancouver:

Whitehurst WAI. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. [Internet] [Thesis]. Montana State University; 2012. [cited 2019 Dec 06]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2533.

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

Council of Science Editors:

Whitehurst WAI. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. [Thesis]. Montana State University; 2012. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2533

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

University of Sydney

3. Williams, Karen. Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers .

Degree: 2014, University of Sydney

URL: http://hdl.handle.net/2123/13345

► Several studies were undertaken to investigate the shedding and super-shedding (>104 cfu/g faeces) of Escherichia coli O157 by dairy heifers. E. coli O157 was detected… (more)

▼ Several studies were undertaken to investigate the shedding and super-shedding (>104 cfu/g faeces) of Escherichia coli O157 by dairy heifers. E. coli O157 was detected from replacement heifers being raised and these heifers were monitored in longitudinal studies. These studies identified a vast range of the prevalence of shedding within the cohort over time (9.6 ¬– 94.3% during the longitudinal study) and a vast range in the levels of E. coli O157 shed by heifers. No patterns or trends could be identified in shedding at the herd level with no discernable associations between shedding levels beyond one week. The absence of patterns and associations in herd level shedding was further demonstrated by intensive, daily sampling periods, which also demonstrated the short duration of shedding and the variability within individuals. The level of shedding by individual heifers, specifically super-shedding, showed little association to herd level shedding. Super-shedding from individual heifers was sporadic with a large number of heifers (nearly half in the longitudinal study) identified as super-shedding at some point. This suggests that the identification of these ‘high risk’ animals and removal may not provide a practical solution to control E. coli O157 from cattle. Further analysis of these studies was undertaken to identify factors which may affect shedding at the herd level. Analysis showed a link between animal factors and shedding or super shedding; body score was associated with shedding and faecal consistency and hide cleanliness was associated with super-shedding. Warm and moist climate conditions were shown to be associated with higher levels of shedding and super-shedding which is expected to provide optimal conditions for bacterial growth and survival. These associations were also shown to be short term. The largest effects were associated with rainfall and these effects also lasted over the longest duration, which is likely associated with increased moisture in the environment following rainfall events and especially high rainfall events. Pasture growth was also associated with shedding, but the confounding effects of warm and wet conditions on pasture growth must be considered. The associations between many of these factors are difficult to disentangle: there are likely to be links between climate and pasture growth, pasture growth and faecal consistency, and faecal consistency and hide cleanliness. Which of these factors, or the compounded effects, actually affect E. coli O157 shedding is difficult to identify in field, observational studies. Pulsed field gel electrophoresis of isolates recovered from these heifers identified two very similar Xba1 pulsotypes with a change in the predominant type over time. This may indicate a single genetic event propagating in the population. However, the use of a second enzyme (Bln1) identified some differences between pulsotypes which were indistinguishable by Xba1 indicating the limitations of the method. Isolates recovered from cattle were also shown to be similar…

Subjects/Keywords: Shedding; Heifers; Dairy

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APA (6^th Edition):

Williams, K. (2014). Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/13345

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):

Williams, Karen. “Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers .” 2014. Thesis, University of Sydney. Accessed December 06, 2019. http://hdl.handle.net/2123/13345.

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

MLA Handbook (7^th Edition):

Williams, Karen. “Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers .” 2014. Web. 06 Dec 2019.

Vancouver:

Williams K. Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers . [Internet] [Thesis]. University of Sydney; 2014. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2123/13345.

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

Council of Science Editors:

Williams K. Investigations of faecal shedding and super-shedding of Escherichia coli 0157 by dairy heifers . [Thesis]. University of Sydney; 2014. Available from: http://hdl.handle.net/2123/13345

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

Mississippi State University

4. Graves, Jessica Martin. PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER.

Degree: MS, Animal and Dairy Sciences, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11122010-115734/ ;

► Objectives of the present study were to evaluate neonatal Holstein heifer performance while supplemented with coccidiostat (CX), yeast (YST), β-glucan or some combination of… (more)

Subjects/Keywords: mannanoligosaccharide; heifers; coccidostat

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APA (6^th Edition):

Graves, J. M. (2010). PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11122010-115734/ ;

Chicago Manual of Style (16^th Edition):

Graves, Jessica Martin. “PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER.” 2010. Masters Thesis, Mississippi State University. Accessed December 06, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11122010-115734/ ;.

MLA Handbook (7^th Edition):

Graves, Jessica Martin. “PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER.” 2010. Web. 06 Dec 2019.

Vancouver:

Graves JM. PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER. [Internet] [Masters thesis]. Mississippi State University; 2010. [cited 2019 Dec 06]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11122010-115734/ ;.

Council of Science Editors:

Graves JM. PERFORMANCE OF NEONATAL HOLSTEIN HEIFERS FED YEAST DERIVATIVES IN MILK REPLACER. [Masters Thesis]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11122010-115734/ ;

Stellenbosch University

5. Engelbrecht, Michiel Nicolaas. The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers.

Degree: MSc, Animal Sciences, 2015, Stellenbosch University

URL: http://hdl.handle.net/10019.1/97998

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ENGLISH ABSTRACT: Sixty Bonsmara heifers (328 ± 3.9 kg) on planted pastures were used to evaluate the effect of two energy sources and three growth… (more)

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ENGLISH ABSTRACT: Sixty Bonsmara heifers (328 ± 3.9 kg) on planted pastures were used to evaluate the effect of two energy sources and three growth promoters on body weight gain. Two supplementary feeds with dried apple pulp (A) or maize (M) as main energy source were formulated on an iso-nutrient base. One of three different growth promoters was included in each energy supplement: placebo (no growth promoter, designated as Treatments Ap and Mp), ionofore (monensin, designated as Treatments Am and Mm) and essential oil extract (from oregano, designated as Treatments Ao and Mo). A fixed amount of the supplements was offered to the six treatment groups in a growth/finishing study on cultivated grass-legume pastures. Animals were stratified according to initial weight in ten blocks and treatments were assigned randomly to animals in each block. The 66 day growth study was conducted during spring (Sepember to November, 2014) in the Western Cape Province of South Africa near Greyton. The cultivated pastures consisted of a perennial grass-legume mixture. A rotation grazing system was applied and animals were moved to new paddocks once a week. Based on falling plate meter readings, the heifers consumed a calculated mean amount of 4.48 ± 0.08 (SEM) kg DM/day over the entire experimental period. A fixed amount of 4 kg (“as is” basis) of the respective supplements were offered daily during the first 42 days, followed by 5 kg/day from 43 days until the end of the study (66 days). Animals were weighed bi-weekly and average daily gain (ADG) was calculated. The mean ADG of the six treatment groups was 1.44 kg/day. No interactions occurred between the energy sources and growth promoters used in the concentrates and main effects were thus interpreted. The supplements that contained apple pulp as energy source resulted in a higher (P < 0.02) ADG (1.54 kg/day) than the maize containing supplements (1.33 kg/day). There were no differences between any of the growth promoters, with the placebo resulting in similar growth rates than monensin and oregano oil extract. Mean ADG values (kg/day) of the different growth promoter treatments were 1.44 (placebo), 1.49 (monensin) and 1.38 (oregano). All the heifers were slaughtered at the end of the trial. Carcass weight and dressing percentage did not differ between energy sources or growth promoters. The mean dressing percentage was 52.5%. The mean income over feeding cost for the 66 day period of the three maize energy source treatments was R254.20/heifer, while that of the apple pulp treatments was R524.75/heifer. According to this study, concentrate supplements containing apple pulp as main energy source were economically more desirable than those containing maize as primary energy source.

AFRIKAANSE OPSOMMING: Sestig Bonsmaraverse (328 ± 3.9 kg) op aangeplante weiding is gebruik om die invloed van twee energiebronne en drie groeibevorderaars op massatoename te ondersoek. Twee supplemente met gedroogde appelpulp (A) of mielies (M) as hoofenergiebron is op ‘n isonutriëntbasis geformuleer.…

Advisors/Committee Members: Cruywagen, C. W., Hoffman, L. C., Hoffmann, W. H., Stellenbosch University. Faculty of Agrisciences. Dept. of Animal Sciences..

Subjects/Keywords: Heifers – Feeding and feeds; Heifers – Growth; Heifers – Nutrition; UCTD

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

APA (6^th Edition):

Engelbrecht, M. N. (2015). The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/97998

Chicago Manual of Style (16^th Edition):

Engelbrecht, Michiel Nicolaas. “The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers.” 2015. Masters Thesis, Stellenbosch University. Accessed December 06, 2019. http://hdl.handle.net/10019.1/97998.

MLA Handbook (7^th Edition):

Engelbrecht, Michiel Nicolaas. “The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers.” 2015. Web. 06 Dec 2019.

Vancouver:

Engelbrecht MN. The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers. [Internet] [Masters thesis]. Stellenbosch University; 2015. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10019.1/97998.

Council of Science Editors:

Engelbrecht MN. The effect of supplements containing different protein and energy sources and essential oils on the performance of pasture finished heifers. [Masters Thesis]. Stellenbosch University; 2015. Available from: http://hdl.handle.net/10019.1/97998

The Ohio State University

6. Hutchings, Ronald P. The influence of excessive fat prior to weaning on the milking potential of beef heifers.

Degree: PhD, Graduate School, 1972, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486733043936105

Subjects/Keywords: Agriculture; Heifers

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APA (6^th Edition):

Hutchings, R. P. (1972). The influence of excessive fat prior to weaning on the milking potential of beef heifers. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486733043936105

Chicago Manual of Style (16^th Edition):

Hutchings, Ronald P. “The influence of excessive fat prior to weaning on the milking potential of beef heifers.” 1972. Doctoral Dissertation, The Ohio State University. Accessed December 06, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486733043936105.

MLA Handbook (7^th Edition):

Hutchings, Ronald P. “The influence of excessive fat prior to weaning on the milking potential of beef heifers.” 1972. Web. 06 Dec 2019.

Vancouver:

Hutchings RP. The influence of excessive fat prior to weaning on the milking potential of beef heifers. [Internet] [Doctoral dissertation]. The Ohio State University; 1972. [cited 2019 Dec 06]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486733043936105.

Council of Science Editors:

Hutchings RP. The influence of excessive fat prior to weaning on the milking potential of beef heifers. [Doctoral Dissertation]. The Ohio State University; 1972. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486733043936105

Univerzitet u Beogradu

7. Savić, Đorđe B., 1980-. Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase.

Degree: Fakultet veterinarske medicine, 2014, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:6653/bdef:Content/get

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Morfologija i fiziologija životinja - Fiziologija i metabolizam visokomliječnih krava / Animal morphology and physiology - Physiology and metabolism of dairy cows

Cilj ove doktorske… (more)

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Morfologija i fiziologija životinja - Fiziologija i metabolizam visokomliječnih krava / Animal morphology and physiology - Physiology and metabolism of dairy cows

Cilj ove doktorske disertacije bio je da se ispita uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase u kasnom graviditetu i ranoj laktaciji. Ispitivanje je sprovedeno na ukupno 30 junica holštajn rase, odabranih u visokom graviditetu. Obje grupe junica su hranjene obrokom prilagođenim potrebama za graviditet, odnosno laktaciju. Junice ogledne grupe su u cilju indukcije hipotireoze od 20. dana prije očekivanog teljenja do dana teljenja svakodnevno peroralno tretirane sa 4 mg PTU/kg tjelesne mase, pomiješanog sa 25 ml maltoznog sirupa. Junice kontrolne grupe su svakodnevno primale samo 25 ml maltoznog sirupa. Uzorci krvi uzeti su punkcijom v. jugularis 20 dana prije očekivanog termina teljenja, 3 i 7 dana kasnije, svakodnevno tokom pet dana prije i pet dana nakon teljenja, a zatim 7., 15., 30. i 60. dana nakon teljenja. Uzorci tkiva jetre uzeti su od svih junica perkutanom biopsijom 7. dana prije očekivanog teljenja i 7. dana nakon teljenja. U svim uzetim uzorcima krvi određene su koncentracije T4, T3, insulina i glukoze. Na osnovu koncentracije insulina i glukoze izračunata je vrijednost HOMA indeksa za sve periode uzorkovanja. U uzorcima uzetim 20., 17., 13., 7. i 4. dana prije i 7., 30. i 60. dana nakon teljenja određena je koncentracija IGF-I, a u uzorcima uzetim 20. i 7. dana prije i 7. i 30. dana nakon teljenja relativna zastupljenost IGFBP-2, IGFBP-3 i IGFBP-4. U uzorcima uzetim 20., 17., 13., 7., 4. i 1. dana prije, i 1., 3., 5., 7., 15., 30. i 60. dana nakon teljenja određene su koncentracije BHBA i ukupnog bilirubina. U uzorcima uzetim 20., 17., 13., 7. i 4. dana prije, na dan teljenja, kao i 3., 4., 7., 15., 30. i 60. dana nakon teljenja određene su koncentracije ukupnih proteina i albumina. U uzetim uzorcima tkiva jetre određena je aktivnost dejodinaza, stepen zamašćenja jetre i sadržaj glikogena. Dnevna proizvodnja mlijeka praćena je u periodu od 7. do 60. dana laktacije, a trajanje servis perioda je izračunato na osnovu podataka sa farme. Tokom tretmana sa PTU kod junica ogledne grupe ustanovljeno je statistički značajno opadanje koncentracije T4, T3, BHBA i aktivnosti DIO1 u tkivu jetre, te statistički značajan porast koncentracije insulina, IGF-I i glukoze u odnosu na junice kontrolne grupe...

Advisors/Committee Members: Kirovski, Danijela, 1969-.

Subjects/Keywords: heifers; hypothyroidism; hormones; metabolites

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APA (6^th Edition):

Savić, Đorđe B., 1. (2014). Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:6653/bdef:Content/get

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):

Savić, Đorđe B., 1980-. “Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase.” 2014. Thesis, Univerzitet u Beogradu. Accessed December 06, 2019. https://fedorabg.bg.ac.rs/fedora/get/o:6653/bdef:Content/get.

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

MLA Handbook (7^th Edition):

Savić, Đorđe B., 1980-. “Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase.” 2014. Web. 06 Dec 2019.

Vancouver:

Savić, Đorđe B. 1. Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase. [Internet] [Thesis]. Univerzitet u Beogradu; 2014. [cited 2019 Dec 06]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6653/bdef:Content/get.

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

Council of Science Editors:

Savić, Đorđe B. 1. Uticaj prepartalne aplikacije propiltiouracila na endokrini i metabolički status junica holštajn rase. [Thesis]. Univerzitet u Beogradu; 2014. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6653/bdef:Content/get

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

Universiteit Utrecht

8. Bardie, Tilly. Vitamine E in het bloed en in de lever bij vaarzen.

Degree: 2008, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/27215

► The effect of supplementation of 3000 IU vitamin E on the concentration of vitamin E in blood and in the liver of heifers around parturition… (more)

Subjects/Keywords: Diergeneeskunde; vitamin E; heifers

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APA (6^th Edition):

Bardie, T. (2008). Vitamine E in het bloed en in de lever bij vaarzen. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/27215

Chicago Manual of Style (16^th Edition):

Bardie, Tilly. “Vitamine E in het bloed en in de lever bij vaarzen.” 2008. Doctoral Dissertation, Universiteit Utrecht. Accessed December 06, 2019. http://dspace.library.uu.nl:8080/handle/1874/27215.

MLA Handbook (7^th Edition):

Bardie, Tilly. “Vitamine E in het bloed en in de lever bij vaarzen.” 2008. Web. 06 Dec 2019.

Vancouver:

Bardie T. Vitamine E in het bloed en in de lever bij vaarzen. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2008. [cited 2019 Dec 06]. Available from: http://dspace.library.uu.nl:8080/handle/1874/27215.

Council of Science Editors:

Bardie T. Vitamine E in het bloed en in de lever bij vaarzen. [Doctoral Dissertation]. Universiteit Utrecht; 2008. Available from: http://dspace.library.uu.nl:8080/handle/1874/27215

Mississippi State University

9. Phiri, Diniwe Grace. Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L).

Degree: MS, Animal and Dairy Sciences, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242016-095258/ ;

► This study was conducted to measure the intake; nutritive value and digestibility of peanut hay (Arachis hypogaea L.). Fourteen Holstein heifers (BW= 408 plus/minus… (more)

Subjects/Keywords: dairy heifers; peanut hay

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APA (6^th Edition):

Phiri, D. G. (2016). Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L). (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242016-095258/ ;

Chicago Manual of Style (16^th Edition):

Phiri, Diniwe Grace. “Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L).” 2016. Masters Thesis, Mississippi State University. Accessed December 06, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242016-095258/ ;.

MLA Handbook (7^th Edition):

Phiri, Diniwe Grace. “Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L).” 2016. Web. 06 Dec 2019.

Vancouver:

Phiri DG. Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L). [Internet] [Masters thesis]. Mississippi State University; 2016. [cited 2019 Dec 06]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242016-095258/ ;.

Council of Science Editors:

Phiri DG. Intake, nutritive value and digestibility in Holstein heifers fed diets supplemented with peanut hay (Arachis Hypogeal L). [Masters Thesis]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242016-095258/ ;

University of Florida

10. Schulmeister, Tessa M. Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle.

Degree: MS, Animal Sciences, 2017, University of Florida

URL: http://ufdc.ufl.edu/UFE0051902

► Brassica carinata, a novel oilseed crop, yields high-quality biofuel, resulting in a high-protein byproduct. This meal has not been tested as a cattle protein supplement,… (more)

Subjects/Keywords: beef – carinata – heifers – metabolism

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APA (6^th Edition):

Schulmeister, T. M. (2017). Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle. (Masters Thesis). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0051902

Chicago Manual of Style (16^th Edition):

Schulmeister, Tessa M. “Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle.” 2017. Masters Thesis, University of Florida. Accessed December 06, 2019. http://ufdc.ufl.edu/UFE0051902.

MLA Handbook (7^th Edition):

Schulmeister, Tessa M. “Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle.” 2017. Web. 06 Dec 2019.

Vancouver:

Schulmeister TM. Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle. [Internet] [Masters thesis]. University of Florida; 2017. [cited 2019 Dec 06]. Available from: http://ufdc.ufl.edu/UFE0051902.

Council of Science Editors:

Schulmeister TM. Evaluation of Brassica Carinata Meal on Animal Performance and Metabolism in Beef Cattle. [Masters Thesis]. University of Florida; 2017. Available from: http://ufdc.ufl.edu/UFE0051902

Texas A&M University

11. Allen, Carolyn C. Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers.

Degree: 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8522

► Developmental changes within the hypothalamus are necessary for maturation of the reproductive neuroendocrine axis. Recent reports have implicated several neuronal networks in this process, but… (more)

▼ Developmental changes within the hypothalamus are necessary for maturation of the reproductive neuroendocrine axis. Recent reports have implicated several neuronal networks in this process, but genes involved in their regulation have not been elucidated. Using a well-established model for nutritional induction of precocious puberty, objectives were to 1) use microarray technology to examine changes in gene expression within the arcuate nucleus (ARC) of the hypothalamus in pre-pubertal heifers fed high or low-concentrate diets, and 2) determine if high-concentrate diets are required for nutritional induction of precocious puberty. In Experiment 1, early-weaned, cross-bred heifers were fed either a high-forage/low-gain (HF/LG; 0.45 kg/d) or a highconcentrate/ high-gain (HC/HG; 0.91 kg/d) diet for 91 d. Analysis of microarray data indicated that 346 genes were differentially expressed (P < 0.05) between HC/HG and HF/LG heifers. Expression of three key metabolic genes [neuropeptide Y (NPY), agoutirelated protein (AGRP), and growth hormone receptor (GHR)] observed to be differentially expressed in the microarray analysis was investigated further by quantitative PCR. Real-time RT-PCR indicated that expression of NPY, AGRP and GHR was lower (P < 0.05) in HC/HG compared to HF/LG heifers. In contrast, concentrations of insulin (P < 0.05), IGF-1 (P < 0.002) and leptin (P = 0.1) were greater in HC/HG compared to HF/LG. For Experiment 2, 48 heifers were used in 2 replicates (24 heifers/replicate) in a 2 x 2 factorial design to examine the roles of diet type (HF vs HC) and rate of gain (LG, 0.45 kg/d vs HG, 0.91 kg/d) on age at puberty. Heifers were fed HC/HG, HC/LG, HF/HG or HF/LG (n = 12/group) for 14 wk, and then switched to a common growth diet (0.68 kg/d) until puberty. Heifers in both HG groups reached puberty at a younger age (54.5 ? 1.8 wk) than heifers in both LG groups (60.2 ? 1.9 wk; P < 0.04). A marked increase (P < 0.01) in serum concentrations of leptin occurred in HC/HG heifers between 24 and 30 wk of age. This increase in circulating leptin was not observed in other groups. Overall, results indicate that nutritional regulation of reproductive neuroendocrine development involves the control of NPY, AGRP and GHR expression. The abrupt increase noted for circulating leptin in heifers fed HC/HG diets, if timed and sustained appropriately, could represent an important temporal cue for activation of the neuroendocrine system and the onset of puberty. Advisors/Committee Members: Williams, Gary L. (advisor), Amstalden, Marcel (advisor), Burghardt, Robert C. (committee member), Tedeschi, Luis O. (committee member).

Subjects/Keywords: Puberty; Arcuate Nucleus; Heifers; Neuropeptide Y; Leptin

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APA (6^th Edition):

Allen, C. C. (2011). Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8522

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):

Allen, Carolyn C. “Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers.” 2011. Thesis, Texas A&M University. Accessed December 06, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8522.

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

MLA Handbook (7^th Edition):

Allen, Carolyn C. “Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers.” 2011. Web. 06 Dec 2019.

Vancouver:

Allen CC. Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers. [Internet] [Thesis]. Texas A&M University; 2011. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8522.

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

Council of Science Editors:

Allen CC. Influence of Nutrition during the Juvenile Period on Gene Expression Within the Hypothalamic Arcuate Nucleus and on Age at Puberty in Heifers. [Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8522

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

University of Pretoria

12. Holm, D.E. (Dietmar Erik). Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography.

Degree: Production Animal Studies, 2014, University of Pretoria

URL: http://hdl.handle.net/2263/40281

► A series of 4 observational studies was performed on a Bovelder herd at Johannesburg Water’s Northern Farm. The heifer and cow breeding seasons started on… (more)

▼ A series of 4 observational studies was performed on a Bovelder herd at Johannesburg Water’s Northern Farm. The heifer and cow breeding seasons started on 15 October and 1 November every year, and consisted of 50 d and 60 d of oestrus observation respectively, with once daily artificial insemination (AI). Five to 7 days after the AI period bulls were added in multi-sire groups for a period of 42 d. Pregnancy diagnoses were performed between 23 March and 26 April every year. The farming system had been in place for >25 years, with few deviations. In the first study, reproductive tract scoring (RTS) by transrectal palpation on a 5- point scale was performed 1 day before the start of breeding on a group of heifers (n = 272) born in 2002. Heifers with RTS 1 or 2 were estimated to be pre-pubertal, those with RTS 3 pubertal and those with RTS 4 or 5 post-pubertal. Pre-breeding body weight (BW) and body condition score (BCS) were recorded, and Kleiber ratio (KR) was calculated (average daily gain/end weight0.75). Heifers were followed until they weaned their first calves. The objectives of this study were to determine if RTS is a valid tool to predict reproduction and production performance in limited bred beef heifers, and to compare its predictive value with that of BW, BCS, age and KR. After adjustment for BW and age, RTS was positively associated with pregnancy rate to the 50 day AI season (P < 0.01), calf weaning weight (P < 0.01) and pregnancy rate to the subsequent breeding season (P < 0.01), and negatively associated with days to calving (P < 0.01). RTS was a better predictor of fertility than was vi KR, and similar in its prediction of calf weaning weight. It was concluded that RTS is a predictor of heifer fertility and compares well with other traits used as a predictor of production outcomes. It was further hypothesised that RTS may predict long-term reproductive performance due to its association with pregnancy outcome and days to calving after first breeding, combined with reports that heifers calving early tend to calve early in subsequent seasons and have increased lifetime production. In study 2, a 7-year longitudinal study, 292 beef cows in two age cohorts were observed from 1-2 d before their first breeding season (day of RTS), until they had weaned up to 5 calves. Years to reproductive failure was defined as the number of years until a cow failed to become pregnant during the AI season. Animals with RTS 1 or 2 were at increased risk of early reproductive failure compared to those with RTS 4 or 5 (HR = 1.4, 95% CI 1.0, 1.9) despite the fact that RTS was not associated with calving rate or days to calving after the second calving season. The predictive value of RTS was lower in the age cohort with a higher prevalence of anoestrus. Most animals with RTS 1 or 2 that were subsequently detected in oestrus were in early to mid di-oestrus at the time of scoring. It was concluded that RTS is a valid culling tool to improve long-term reproductive success in a seasonal breeding… Advisors/Committee Members: Thompson, P.N. (Peter N.) (advisor), Nielen, Mirjam (coadvisor), Irons, Pete Charles (coadvisor).

Subjects/Keywords: Beef heifers; Reproductive tract score; UCTD; RTS

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APA (6^th Edition):

Holm, D. E. (. E. (2014). Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/40281

Chicago Manual of Style (16^th Edition):

Holm, D E (Dietmar Erik). “Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography.” 2014. Doctoral Dissertation, University of Pretoria. Accessed December 06, 2019. http://hdl.handle.net/2263/40281.

MLA Handbook (7^th Edition):

Holm, D E (Dietmar Erik). “Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography.” 2014. Web. 06 Dec 2019.

Vancouver:

Holm DE(E. Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography. [Internet] [Doctoral dissertation]. University of Pretoria; 2014. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2263/40281.

Council of Science Editors:

Holm DE(E. Early determination of the reproductive potential of beef heifers using reproductive tract scoring, pelvimetry and transrectal ultrasonography. [Doctoral Dissertation]. University of Pretoria; 2014. Available from: http://hdl.handle.net/2263/40281

Universiteit Utrecht

13. Bertens, M.F. Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows.

Degree: 2008, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/178945

► The aim of this study was to compare embryo quality, uterine environment and corpus luteum function in heifers and second/third parity cows. After superovulation and… (more)

Subjects/Keywords: Diergeneeskunde; corpus luteum, embryo quality, heifers

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APA (6^th Edition):

Bertens, M. F. (2008). Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/178945

Chicago Manual of Style (16^th Edition):

Bertens, M F. “Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows.” 2008. Doctoral Dissertation, Universiteit Utrecht. Accessed December 06, 2019. http://dspace.library.uu.nl:8080/handle/1874/178945.

MLA Handbook (7^th Edition):

Bertens, M F. “Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows.” 2008. Web. 06 Dec 2019.

Vancouver:

Bertens MF. Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2008. [cited 2019 Dec 06]. Available from: http://dspace.library.uu.nl:8080/handle/1874/178945.

Council of Science Editors:

Bertens MF. Comparison of corpus luteum function and embryo quality in heifers and second/third parity lactating cows. [Doctoral Dissertation]. Universiteit Utrecht; 2008. Available from: http://dspace.library.uu.nl:8080/handle/1874/178945

Oregon State University

14. De Meireles Reis, Maria. Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters.

Degree: MS, Animal Science, 2014, Oregon State University

URL: http://hdl.handle.net/1957/54611

► The following experiment presented herein compared growth, physiological, and reproductive responses of beef heifers with (MI) or without (CON) access to a creep-feeder, as a… (more)

▼ The following experiment presented herein compared growth, physiological, and reproductive responses of beef heifers with (MI) or without (CON) access to a creep-feeder, as a manner to stimulate metabolic imprinting while nursing their dams. On d 0 of the experiment, 60 Angus × Hereford heifers were ranked by initial BW and age (140 ± 3 kg and 68 ± 3 d, respectively) as well as dam age and BCS, and assigned to pairs so all ranking criteria were similar between heifers within each pair. On d 1, pairs were randomly assigned to MI (n = 15) or CON (n = 15). From d 1 to 51, MI pairs and their dams were allocated to 15 drylot pens where heifers had ad libitum access to a corn-based supplement through a creep-feeder. The CON pairs and their dams were maintained in an adjacent single drylot pen. From d 52 to 111, cattle from both treatments were managed as a single group on a semiarid range pasture. On d 111, heifers were weaned and allocated to 2 pastures according to treatment, receiving hay and a corn-based concentrate until d 326. Full BW was recorded prior to (d -1 and 0) and at the end of the creep-feeding period (d 50 and 51), whereas shrunk BW was collected on d 112 and 326. On d 0, 51, 111, 187, 261, and 325, blood was collected and real-time ultrasonography for LM depth and backfat thickness assessment was performed. Blood was also collected every 10 d from d 113 to 323 for puberty evaluation via plasma progesterone concentrations. Liver and subcutaneous fat biopsies were performed on d 51, 111, 261, and 325. Average daily gain was greater (P < 0.01) for MI than CON from d 1 to 51, tended (P = 0.09) to be greater for CON than MI from d 112 to 326, whereas BW on d 326 was similar (P = 0.87) between treatments. On d 51, MI had greater (P ≤ 0.01) plasma IGF-I and glucose concentrations, as well as mRNA expression of hepatic pyruvate carboxylase and adipose fatty acid synthase than CON. On d 261 and 325, plasma insulin concentrations were greater (P ≤ 0.03) in CON than MI. Mean mRNA expression of hepatic IGF-I and adipose peroxisome proliferator-activated receptor gamma were greater (P ≤ 0.05) in MI than CON. Heifers assigned to MI attained puberty earlier (P = 0.04) during the experiment than CON, although age and BW at puberty were similar (P ≤ 0.74) between treatments. In conclusion, supplementing nursing heifers via creep-feeding for 50 d altered physiological and biochemical parameters suggestive of a metabolic imprinting effect, but did not impact heifer age or BW at puberty. Advisors/Committee Members: Cooke, Reinaldo (advisor), Bohnert, David (committee member).

Subjects/Keywords: beef heifer; Heifers – Feeding and feeds

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APA (6^th Edition):

De Meireles Reis, M. (2014). Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/54611

Chicago Manual of Style (16^th Edition):

De Meireles Reis, Maria. “Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters.” 2014. Masters Thesis, Oregon State University. Accessed December 06, 2019. http://hdl.handle.net/1957/54611.

MLA Handbook (7^th Edition):

De Meireles Reis, Maria. “Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters.” 2014. Web. 06 Dec 2019.

Vancouver:

De Meireles Reis M. Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/1957/54611.

Council of Science Editors:

De Meireles Reis M. Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/54611

Montana State University

15. Spence, Kaitlyn Claire. The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers.

Degree: College of Agriculture, 2014, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/8709

► The objectives of these studies were to investigate the effects of feeding high-linoleic cracked safflower seeds on reproductive and performance outcomes in pubertal beef heifers.… (more)

Subjects/Keywords: Heifers Feeding and feeds.; Estrus.; Safflower.

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APA (6^th Edition):

Spence, K. C. (2014). The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/8709

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):

Spence, Kaitlyn Claire. “The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers.” 2014. Thesis, Montana State University. Accessed December 06, 2019. https://scholarworks.montana.edu/xmlui/handle/1/8709.

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

MLA Handbook (7^th Edition):

Spence, Kaitlyn Claire. “The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers.” 2014. Web. 06 Dec 2019.

Vancouver:

Spence KC. The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers. [Internet] [Thesis]. Montana State University; 2014. [cited 2019 Dec 06]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/8709.

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

Council of Science Editors:

Spence KC. The effects of feeding high-linoleic safflower seeds on estrus synchronization in beef heifers. [Thesis]. Montana State University; 2014. Available from: https://scholarworks.montana.edu/xmlui/handle/1/8709

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

University of Tennessee – Knoxville

16. McFarlane, Zachary David. Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation.

Degree: 2018, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_graddiss/4877

► Three studies were conducted to determine the effects of stockpiled winter forage species and protein supplementation strategy on heifer growth, reproductive performance, nutritional status, rumen… (more)

▼ Three studies were conducted to determine the effects of stockpiled winter forage species and protein supplementation strategy on heifer growth, reproductive performance, nutritional status, rumen fermentation, and the economic implications of forage-based heifer development. In all three studies, spring-born, beef heifers were stratified by BW and randomly assigned to 1 of 3 stockpiled forages: (1) endophyte-infected tall fescue (TF, Schedonorus arundinaceus (Schreb.) Dumort) (2) big bluestem (Andropogon gerardi Vitman) and indiangrass (Sorghastrum nutans L.) combination (BI), or (3) switchgrass (SG, Panicum virgatum L.). Forage treatments were randomly allocated to receive 1 of 2 supplement types: (1) 0.68 kg·heifer-1·d-1 of dried distiller’s grains with solubles (DDGS) or (2) 0.22 kg·heifer-1·d-1 of blood meal and fish meal (BF), resulting in a 3 × 2 factorial arrangement of treatments. Treatments were initiated in January and concluded in April at the onset of the breeding season. In Exp. 1, BW was greater (P < 0.01) for TF heifers, resulting from an increased (P < 0.01) ADG from initiation to breeding for TF heifers. From January to April, heifers grazing SG and BI pastures had a negative ADG; however, from breeding to final pregnancy diagnosis, SG and BI heifers compensated and had greater (P < 0.01) ADG than TF heifers. Pregnancy rates at fixed timed-AI and overall pregnancy rates did not differ (P ≥ 0.38) by forage or supplement treatment. In Exp. 2, heifers grazing SG pastures had greater (P = 0.04) ruminal acetate concentrations than their counterparts. However, ruminal concentrations of propionate and butyrate were not influenced (P > 0.32) by forage species. Due to an increase in ruminal acetate concentration, ruminal acetate:propionate ratio was greater (P = 0.04) for heifers grazing SG pastures. In Exp. 3, total cost of producing a heifer’s first calf using the three forage-based systems was 1,079 to 1,149/head with tall fescue (TF) being the most expensive forage-based heifer development forage system. Overall, low-input heifer development using stockpiled warm-season forages and protein supplementation may be a viable opportunity to extend the grazing season, lower production costs, and select for more efficient replacement females in the southeastern United States.

Subjects/Keywords: beef heifers; stockpiled forages; heifer development

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APA (6^th Edition):

McFarlane, Z. D. (2018). Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/4877

Chicago Manual of Style (16^th Edition):

McFarlane, Zachary David. “Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation.” 2018. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed December 06, 2019. https://trace.tennessee.edu/utk_graddiss/4877.

MLA Handbook (7^th Edition):

McFarlane, Zachary David. “Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation.” 2018. Web. 06 Dec 2019.

Vancouver:

McFarlane ZD. Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2018. [cited 2019 Dec 06]. Available from: https://trace.tennessee.edu/utk_graddiss/4877.

Council of Science Editors:

McFarlane ZD. Low-Input Heifer Development Using Stockpiled Native Forages and Protein Supplementation. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2018. Available from: https://trace.tennessee.edu/utk_graddiss/4877

Massey University

17. Green, Talia Corina. Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes.

Degree: MS, Animal Science, 2012, Massey University

URL: http://hdl.handle.net/10179/4136

► Residual feed intake (RFI) is a measure of an individual’s efficiency in utilising feed for maintenance and production during growth or lactation. It can be… (more)

▼ Residual feed intake (RFI) is a measure of an individual’s efficiency in utilising feed for maintenance and production during growth or lactation. It can be defined as the difference between the actual and predicted feed intake of that individual. Efficient animals eat less than predicted for their body weight and level of performance, and inefficient animals eat more. The objective of this study was to investigate possible relationships between RFI and behavioural traits, such as feeding behaviour, social dominance, and activity in young dairy heifers. The intakes and liveweights of 1049 growing dairy heifers (6-8 months of age, 195 ± 25.8 kg liveweight) in five cohorts were measured for 42-49 days to ascertain individual RFI. Animals were housed in an outdoor feeding facility comprising 28 pens, each with eight animals and one feeder per pen, and were fed a dried, cubed lucerne diet. An electronic feed monitoring system measured the intake and feeding behaviour of individuals. Intake was moderately to strongly correlated with RFI for individual cohorts (r = 0.54-0.74; p < 0.001), indicating that efficient animals ate less than inefficient animals. Several other feeding behaviour traits were related to RFI, but the relationships were weak (r = 0.14-0.26; p < 0.05) suggesting that feeding behaviour is not a reliable predictor of RFI in growing dairy heifers. Statistical comparison of the extremes of RFI (104 most and 104 least efficient) showed that the most efficient animals (low-RFI) had similar liveweight and average daily gain to the least efficient (high-RFI) (p > 0.05) but ate less (mean ± SED; 6.97 v 8.75 ± 0.10 kg cubes), had fewer meals (6.3 v 8.2 ± 0.61/d), shorter daily feeding duration (2.71 v 2.85 ± 0.07 h), ate longer meals (35.6 v 30.6 ± 1.54 min/meal), and ate more slowly (45.4 v 53.0 ± 1.36 g cubes/min) than the least efficient animals (all p < 0.05). These groups also differed in their feeding patterns over 24 h. Video recordings of 32 animals showed that daily activity included (mean ± SEM) 15.4 ± 0.5 h lying, 4.8 ± 0.5 h standing, and 2.9 ± 0.1 h feeding. However, neither social status nor activity were related to RFI in this study (p > 0.05). Feeding behaviour explained only a small proportion of the variation in RFI in dairy heifers. Selecting animals for low RFI (efficient) is unlikely to affect social dominance and activity, although these results should be confirmed in a grazing environment representative of most New Zealand dairy farms.

Subjects/Keywords: Dairy cattle; Feed utilization efficiency; Heifers

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APA (6^th Edition):

Green, T. C. (2012). Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes. (Masters Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/4136

Chicago Manual of Style (16^th Edition):

Green, Talia Corina. “Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes.” 2012. Masters Thesis, Massey University. Accessed December 06, 2019. http://hdl.handle.net/10179/4136.

MLA Handbook (7^th Edition):

Green, Talia Corina. “Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes.” 2012. Web. 06 Dec 2019.

Vancouver:

Green TC. Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes. [Internet] [Masters thesis]. Massey University; 2012. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10179/4136.

Council of Science Editors:

Green TC. Relationships between behavioural traits, residual feed intake, and average daily gain in growing dairy heifers fed lucerne cubes. [Masters Thesis]. Massey University; 2012. Available from: http://hdl.handle.net/10179/4136

Angelo State University

18. Coley, Allison. Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers.

Degree: MS, Animal Science, 2012, Angelo State University

URL: http://hdl.handle.net/2346.1/25

► The objectives of this study were to evaluate the feeding a high energy supplementation and its effects on estrus and conception rates in Angus heifers.… (more)

Subjects/Keywords: Angus heifers; breeding; feed treatment; Estrus; Conception

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APA (6^th Edition):

Coley, A. (2012). Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers. (Masters Thesis). Angelo State University. Retrieved from http://hdl.handle.net/2346.1/25

Chicago Manual of Style (16^th Edition):

Coley, Allison. “Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers.” 2012. Masters Thesis, Angelo State University. Accessed December 06, 2019. http://hdl.handle.net/2346.1/25.

MLA Handbook (7^th Edition):

Coley, Allison. “Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers.” 2012. Web. 06 Dec 2019.

Vancouver:

Coley A. Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers. [Internet] [Masters thesis]. Angelo State University; 2012. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2346.1/25.

Council of Science Editors:

Coley A. Effects of feeding high energy supplements pre and post breeding on estrus and conception of spring calving heifers. [Masters Thesis]. Angelo State University; 2012. Available from: http://hdl.handle.net/2346.1/25

University of Missouri – Columbia

19. Martin, Neal Timothy. Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows.

Degree: 2012, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/33151

► This experiment compared two long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time AI (FTAI) in postpartum beef cows. Cows assigned to the… (more)

▼ This experiment compared two long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time AI (FTAI) in postpartum beef cows. Cows assigned to the 14-19 d CIDR-PG protocol (n = 196) received CIDR inserts (1.38 g progesterone) from d 0 to 14 and PGF2α (PG; 25 mg, i.m.) 19 d after CIDR removal on d 33. Cows assigned to the 14-16 d CIDR-PG protocol (n = 195) received CIDR inserts from d 3 to 17, and PG 16 d after CIDR removal on d 33. Cows in both treatments were artificially inseminated on d 36, 72 h after PG, with GnRH (100 μg i.m.) at FTAI. Blood samples for progesterone (P4) were collected at d −10 and d 0 to determine pretreatment estrous cyclicity status, and again at PG. Blood samples for estradiol (E2) were collected at PG and FTAI. HeatWatch estrus detection transmitters were utilized from CIDR removal until FTAI to determine onset of estrus following CIDR removal and PG. Dominant follicle diameter was determined via ultrasonagraphy at PG and FTAI. Ultrasound pregnancy diagnosis was performed 70 d after FTAI and confirmed at d 140 of gestation. Cows in both treatments had similar size dominant follicles at PG, and FTAI. Progesterone at PG was higher for 14-16 d CIDR-PG treated cows compared to 14-19 d treated cows. Mean concentrations of E2 were similar between treatments at PG, but were higher at FTAI for 14-16 d CIDR-PG treated cows. There were no differences between treatments in E2 at FTAI for cows that failed to exhibit estrus after PG. Estrous response after PG was higher for cows assigned to the 14-19 d CIDR-PG protocol. Estrous response after PG among cows ≥ 4 yr was higher for cows assigned to the 14-19 d CIDR-PG protocol, but there were no differences between treatments for cows ≤ 3 yr. There were no differences between treatments for FTAI pregnancy rate. However, pregnancy rate after FTAI among cows ≥ 4 yr tended to be higher for cows assigned to the 14-19 d CIDR-PG protocol. In summary, both protocols worked effectively to synchronize estrus and ovulation prior to FTAI in postpartum beef cows, suggesting that a range in interval from CIDR removal to PG may be feasible when using long-term CIDR-based protocols. Higher estrous response rates after PG and improvements in FTAI pregnancy rate for 14-19 d treated cows ≥ 4 yr of age warrants further consideration. Advisors/Committee Members: Patterson, David J. (David James), 1954- (advisor).

Subjects/Keywords: reproductive performance; estrous synchronization; beef heifers

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APA (6^th Edition):

Martin, N. T. (2012). Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/33151

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):

Martin, Neal Timothy. “Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows.” 2012. Thesis, University of Missouri – Columbia. Accessed December 06, 2019. http://hdl.handle.net/10355/33151.

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

MLA Handbook (7^th Edition):

Martin, Neal Timothy. “Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows.” 2012. Web. 06 Dec 2019.

Vancouver:

Martin NT. Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows. [Internet] [Thesis]. University of Missouri – Columbia; 2012. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10355/33151.

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

Council of Science Editors:

Martin NT. Comparison of long-term CIDR-based protocols to synchronize estrus and ovulation prior to fixed-time artificial insemination in postpartum beef cows. [Thesis]. University of Missouri – Columbia; 2012. Available from: http://hdl.handle.net/10355/33151

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

Montana State University

20. Sorensen, Sharon Joyce. Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures.

Degree: College of Agriculture, 1991, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/6974

Subjects/Keywords: Methionine.; Proteins in animal nutrition.; Heifers Feed utilization efficiency.; Heifers Growth.; Heifers Nutrition.

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APA (6^th Edition):

Sorensen, S. J. (1991). Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/6974

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):

Sorensen, Sharon Joyce. “Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures.” 1991. Thesis, Montana State University. Accessed December 06, 2019. https://scholarworks.montana.edu/xmlui/handle/1/6974.

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

MLA Handbook (7^th Edition):

Sorensen, Sharon Joyce. “Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures.” 1991. Web. 06 Dec 2019.

Vancouver:

Sorensen SJ. Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures. [Internet] [Thesis]. Montana State University; 1991. [cited 2019 Dec 06]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6974.

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

Council of Science Editors:

Sorensen SJ. Influence of different forms of methionine on gain, intake, and ruminal parameters of heifers grazing improved pastures. [Thesis]. Montana State University; 1991. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6974

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

Montana State University

21. Wiley, Jon Scott. Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum.

Degree: College of Agriculture, 1990, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/6787

Subjects/Keywords: Proteins in animal nutrition.; Heifers Nutrition.; Heifers Reproduction.

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APA (6^th Edition):

Wiley, J. S. (1990). Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/6787

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):

Wiley, Jon Scott. “Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum.” 1990. Thesis, Montana State University. Accessed December 06, 2019. https://scholarworks.montana.edu/xmlui/handle/1/6787.

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

MLA Handbook (7^th Edition):

Wiley, Jon Scott. “Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum.” 1990. Web. 06 Dec 2019.

Vancouver:

Wiley JS. Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum. [Internet] [Thesis]. Montana State University; 1990. [cited 2019 Dec 06]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6787.

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

Council of Science Editors:

Wiley JS. Production from first calf beef heifers fed a high or low level of prepartum nutrition and ruminally undegradable protein postpartum. [Thesis]. Montana State University; 1990. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6787

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

University of Florida

22. Moriel, Philipe. Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves.

Degree: PhD, Animal Sciences, 2013, University of Florida

URL: http://ufdc.ufl.edu/UFE0045739

► Two 2-yr experiments evaluated the long-term effects of metabolic imprinting and different nutritional management systems for EW beef calves (Bos spp.). Experiment 1 evaluated the… (more)

▼ Two 2-yr experiments evaluated the long-term effects of metabolic imprinting and different nutritional management systems for EW beef calves (Bos spp.). Experiment 1 evaluated the growth performance, carcass characteristics and muscle gene expression of beef steers, while experiment 2 evaluated the liver gene expression, growth and reproductive performance of beef heifers. In both experiments, calves were normally weaned (NW) at 250 d of age (d 180), or early-weaned (EW) at 70 d of age (d 0) and randomly assigned to 1 of 3 EW calf management systems: 1) EW and limit-fed a high-concentrate diet in drylot for at least 180 d; 2) EW and limit-fed a high-concentrate diet in drylot for 90 d, then bahiagrass grazing until the time of NW (d 180); and 3) EW and ryegrass grazing for 60 to 90 d, then bahiagrass grazing until the time of NW. Experiment 1 demonstrated that overall growth performance of EW steers was similar or greater than NW steers. Early-weaned calves provided a high-concentrate diet in drylot for at least 90 d had greater body weight at the time of NW, and enhanced growth performance during the first 28 d of the finishing phase, when compared to NW and EW steers grazing annual ryegrass pastures. Also, feeding a high-concentrate diet to EW steers for at least 90 d enhanced plasma concentrations of IGF-1, and the expression of genes associated with growth (muscle IGF-1 receptor and paired box gene 7) and adipose tissue formation (peroxisome proliferator-activated receptor ?). However, early-exposure to high-concentrate diets did not affect the overall carcass characteristics and marbling scores of steers slaughtered at a common backfat thickness. Experiment 2 demonstrated that EW heifers provided a high-concentrate diet for at least 90 d in drylot and EW heifers grazed on ryegrass pastures, had similar or greater growth performance than NW heifers. Furthermore, it provided evidence that early-exposure to a high-concentrate diet lead to metabolic imprinting effects, such as altered liver IGF-1 expression (during periods of similar nutritional management) and early puberty achievement of Bos indicus-influenced beef heifers. Calf weaning at the onset of the breeding season enhanced cow growth performance, and tended to enhance reproductive performance of multiparous cows. ( en ) Advisors/Committee Members: Arthington, John David (committee chair), Hersom, Matthew J (committee member), Johnson, Sally E (committee member), Vendramini, Joao Mauricio Bueno (committee member), Gerrard, David E (committee member), Mccann, Mark (committee member).

Subjects/Keywords: Beef; Calves; Cattle; Early weaning; Heifers; Messenger RNA; Pastures; Plasmas; Puberty; Weaning; early-weaning – heifers – imprinting – metabolic – steers

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APA (6^th Edition):

Moriel, P. (2013). Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0045739

Chicago Manual of Style (16^th Edition):

Moriel, Philipe. “Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves.” 2013. Doctoral Dissertation, University of Florida. Accessed December 06, 2019. http://ufdc.ufl.edu/UFE0045739.

MLA Handbook (7^th Edition):

Moriel, Philipe. “Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves.” 2013. Web. 06 Dec 2019.

Vancouver:

Moriel P. Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2019 Dec 06]. Available from: http://ufdc.ufl.edu/UFE0045739.

Council of Science Editors:

Moriel P. Long-Term Effects of Metabolic Imprinting and Calf Management Systems following Early-Weaning on Growth and Reproductive Performance of Beef Calves. [Doctoral Dissertation]. University of Florida; 2013. Available from: http://ufdc.ufl.edu/UFE0045739

Kansas State University

23. Simon, Michael Charles. The effect of management option on the performance of pregnant feedlot heifers.

Degree: 1983, Kansas State University

URL: http://hdl.handle.net/2097/13035

Subjects/Keywords: Heifers – Feed utilization efficiencyComparative studies; Heifers – Marketing; Feedlots – Management

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APA (6^th Edition):

Simon, M. C. (1983). The effect of management option on the performance of pregnant feedlot heifers. (Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/13035

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):

Simon, Michael Charles. “The effect of management option on the performance of pregnant feedlot heifers.” 1983. Thesis, Kansas State University. Accessed December 06, 2019. http://hdl.handle.net/2097/13035.

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

MLA Handbook (7^th Edition):

Simon, Michael Charles. “The effect of management option on the performance of pregnant feedlot heifers.” 1983. Web. 06 Dec 2019.

Vancouver:

Simon MC. The effect of management option on the performance of pregnant feedlot heifers. [Internet] [Thesis]. Kansas State University; 1983. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2097/13035.

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

Council of Science Editors:

Simon MC. The effect of management option on the performance of pregnant feedlot heifers. [Thesis]. Kansas State University; 1983. Available from: http://hdl.handle.net/2097/13035

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

Kansas State University

24. Fleck, Arnold T. Effect of varied growth from birth through thirty months of age on the performance of beef heifers.

Degree: MS, 1978, Kansas State University

URL: http://hdl.handle.net/2097/26865

Subjects/Keywords: Heifers – Feeding and feeds.; Heifers – Growth.; Masters theses

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APA (6^th Edition):

Fleck, A. T. (1978). Effect of varied growth from birth through thirty months of age on the performance of beef heifers. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/26865

Chicago Manual of Style (16^th Edition):

Fleck, Arnold T. “Effect of varied growth from birth through thirty months of age on the performance of beef heifers.” 1978. Masters Thesis, Kansas State University. Accessed December 06, 2019. http://hdl.handle.net/2097/26865.

MLA Handbook (7^th Edition):

Fleck, Arnold T. “Effect of varied growth from birth through thirty months of age on the performance of beef heifers.” 1978. Web. 06 Dec 2019.

Vancouver:

Fleck AT. Effect of varied growth from birth through thirty months of age on the performance of beef heifers. [Internet] [Masters thesis]. Kansas State University; 1978. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/2097/26865.

Council of Science Editors:

Fleck AT. Effect of varied growth from birth through thirty months of age on the performance of beef heifers. [Masters Thesis]. Kansas State University; 1978. Available from: http://hdl.handle.net/2097/26865

The Ohio State University

25. Hancock, Dale Dawson. Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds .

Degree: PhD, Graduate School, 1983, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487239392028209

Subjects/Keywords: Biology; Dairy cattle; Heifers; Diarrhea

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APA (6^th Edition):

Hancock, D. D. (1983). Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds . (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1487239392028209

Chicago Manual of Style (16^th Edition):

Hancock, Dale Dawson. “Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds .” 1983. Doctoral Dissertation, The Ohio State University. Accessed December 06, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487239392028209.

MLA Handbook (7^th Edition):

Hancock, Dale Dawson. “Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds .” 1983. Web. 06 Dec 2019.

Vancouver:

Hancock DD. Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds . [Internet] [Doctoral dissertation]. The Ohio State University; 1983. [cited 2019 Dec 06]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487239392028209.

Council of Science Editors:

Hancock DD. Studies on the epidemiology of mortality and diarrheal morbidity in heifer calves in northeastern Ohio dairy herds . [Doctoral Dissertation]. The Ohio State University; 1983. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487239392028209

26. Tiago Neves Pereira Valente. Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco.

Degree: 2006, Universidade Federal Rural do Rio de Janeiro

URL: http://bdtd.ufrrj.br//tde_busca/arquivo.php?codArquivo=107

►

This study was carried out on the Seropédica Experimental Station of Pesagro, Rio de Janeiro, Brazil, from April 7 to October 6 of 2005 (182… (more)

▼

This study was carried out on the Seropédica Experimental Station of Pesagro, Rio de Janeiro, Brazil, from April 7 to October 6 of 2005 (182 days of dry season) and utilized two groups of 11 dairy heifers (Holstein/Zebu) weighting 177,66 kg and 15,74 months age. In the pre-experimental period, for 49 days (April 7 to May 26), 11 heifers were mantained closed into a stall and submitted to a forced restriction in their daily dry matter intake which resulted in small lost of body weight (-2,9 kg in relation of initial weight) and others 11 heifers were mantained free on the pasture and gained 30,2 kg in relation to their initial weight. After this pre-experimental period, both groups were kept on the same grazing area and received a proteic-energetic supplement containing 30% urea, 30% NaCl and 40% of wheat middlings. Both groups were weighted at each 21 days; on the same data, only the group that suffered forced alimentary restriction was evaluated for their body condiction score (BCS). The animals that suffered an alimentary restriction had higher daily weight gain troughout the dry season. At the end of the experimental period the difference between the two groups was 15,6 kg. The values for body condiction score were different in the period of lost of body weight and in the re-growth phase; i.e. for a lost of 14,3 kg of body weigth the heifers had 0,68 units in their BCS and for a gain of 48,2 kg of body weigth, during the proteic-energetic supplementary phase, the same heifers had + 0,31 units of BCS.

O experimento foi realizado na área de bovinos leiteiros da Estação Experimental de Seropédica (EES) da Pesagro-Rio com duração de 182 dias de 07/04/05 a 06/10/05. Foram utilizadas 22 novilhas mestiças leiteiras (Holandês-Zebu), com idade de 15,74 meses e peso médio de 177,66 kg no início do experimento, o objetivo foi avaliar o ganho de peso das novilhas que passaram por restrição alimentar antes do período seco e a utilização de um suplemento protéico-energético durante o período de estiagem. A área foi dividida em dois piquetes de tamanho similar formados por pastagens naturais de grama batatais (Paspalum notatum) e capim belém (Sporobulus poiretii), foram vedados 50 dias antes do início do experimento, e os animais manejados em regime de pastejo contínuo. O período pré-experimental teve duração de 49 dias e um lote de onze novilhas permaneceu preso no curral com alimentação volumosa limitada, esta restrição alimentar gerou uma diferença entre os dois lotes de 31,5 kg no início do experimento. O lote controle permaneceu mantido no pasto. Após o período de restrição alimentar os dois lotes foram mantidos nos piquetes e receberam um suplemento protéico-energético que continha 30% de uréia, 30% NaCl e 40% de farelo de trigo. Juntamente com as pesagens a cada 21 dias, notas para escore corporal foram dadas aos animais de ambos os lotes. As novilhas que foram submetidas à restrição alimentar antes do período seco tiveram um ganho de peso superior ao lote controle durante a estação seca, indicando que um possível…

Advisors/Committee Members: José Paulo de Oliveira, Pedro Antônio Muniz Malafaia, Victor Cruz Rodrigues.

Subjects/Keywords: crescimento compensatório; novilhas leiteiras; suplementação; ZOOTECNIA; compensatory growth; dairy heifers; supplementation

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APA (6^th Edition):

Valente, T. N. P. (2006). Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco. (Thesis). Universidade Federal Rural do Rio de Janeiro. Retrieved from http://bdtd.ufrrj.br//tde_busca/arquivo.php?codArquivo=107

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):

Valente, Tiago Neves Pereira. “Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco.” 2006. Thesis, Universidade Federal Rural do Rio de Janeiro. Accessed December 06, 2019. http://bdtd.ufrrj.br//tde_busca/arquivo.php?codArquivo=107.

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

MLA Handbook (7^th Edition):

Valente, Tiago Neves Pereira. “Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco.” 2006. Web. 06 Dec 2019.

Vancouver:

Valente TNP. Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco. [Internet] [Thesis]. Universidade Federal Rural do Rio de Janeiro; 2006. [cited 2019 Dec 06]. Available from: http://bdtd.ufrrj.br//tde_busca/arquivo.php?codArquivo=107.

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

Council of Science Editors:

Valente TNP. Ganho de Peso de Novilhas Mestiças Leiteiras Submetidas ou Não à Restrição Alimentar Antes do Período Seco. [Thesis]. Universidade Federal Rural do Rio de Janeiro; 2006. Available from: http://bdtd.ufrrj.br//tde_busca/arquivo.php?codArquivo=107

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

Texas A&M University

27. Paczkowski, Melissa Jeanne. Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers.

Degree: 2005, Texas A&M University

URL: http://hdl.handle.net/1969.1/2796

► Angus-sired heifers were allotted by age (mean=4 mo), BW (mean=135 kg), and sire (n=4) to either a control (n=10) or infected group (n=11; 600 metacercariae… (more)

▼ Angus-sired heifers were allotted by age (mean=4 mo), BW (mean=135 kg), and sire (n=4) to either a control (n=10) or infected group (n=11; 600 metacercariae of Fasciola hepatica, intraruminally) to test our hypothesis that puberty is delayed by experimental fascioliasis. Blood samples were collected biweekly for analysis of steroid hormone concentrations. At 2-wk intervals, BW was recorded, and samples were collected for analysis of liver enzymes and serum proteins and fecal egg counts. A radiotelemetry system (HeatWatch??) was used to detect estrus and ovulation was confirmed by an elevation in serum progesterone (P4) after estrus. Heifers were artificially inseminated (AI) at the second observed estrus. Serum γ-glutamyl transpeptidase (GGT) and aspartate aminotransferase (AST) increased (p<0.0008) between day 0 and 112 in the infected group. Serum estradiol (E2) and P4 concentrations did not differ (p>0.1) between treatment groups. Mean age at puberty was 10 days later (p>0.1) in the infected group. Conception rate did not differ between control and infected heifers. The HeatWatch?? data were used to compare mounting activity during estrus in pubertal and gestating heifers. Mean duration of estrus was longer (p<0.01) for the second than for the pubertal estrus, though total mount duration and number of mounts did not differ. Number of mounts at second estrus was greater (p<0.05) for heifers that conceived (n=9). Mean duration of estrus and total mount duration at second estrus were not associated with pregnancy outcome. Estrus events were detected in all nine heifers during pregnancy (total=73). A majority (75%) of the interestrus intervals during gestation was <17 d. Number of mounts (p=0.035) and total duration of mounts (p=0.022) at second estrus were predictive of number of mounts during gestation. Experimental infection of Fasciola hepatica did not alter serum steroid hormone concentration or delay pubertal development in heifers. Estrus duration was longer for the second estrus compared to the pubertal estrus, and the number of mounts received during the second estrus was greater in heifers that did conceive to AI. Estrus events were detected in each heifer during pregnancy; however, a normal interestrus interval occurred in only 10% of the estrus events. Advisors/Committee Members: Forrest, David (advisor), Magee, Derry (committee member), Thompson, James (committee member), Craig, Thomas (committee member).

Subjects/Keywords: Fascioliasis; Puberty; Heifers; HeatWatch

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

APA (6^th Edition):

Paczkowski, M. J. (2005). Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/2796

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):

Paczkowski, Melissa Jeanne. “Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers.” 2005. Thesis, Texas A&M University. Accessed December 06, 2019. http://hdl.handle.net/1969.1/2796.

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

MLA Handbook (7^th Edition):

Paczkowski, Melissa Jeanne. “Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers.” 2005. Web. 06 Dec 2019.

Vancouver:

Paczkowski MJ. Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers. [Internet] [Thesis]. Texas A&M University; 2005. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/1969.1/2796.

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

Council of Science Editors:

Paczkowski MJ. Effects of experimental fascioliasis on puberty and comparison of mounting activity by radiotelemetry in pubertal and gestating beef heifers. [Thesis]. Texas A&M University; 2005. Available from: http://hdl.handle.net/1969.1/2796

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

Universidade Federal de Viçosa

28. Madriano Christilis da Rocha Santos. Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos.

Degree: 2010, Universidade Federal de Viçosa

URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3161

►

This study aimed to carry out the analysis using the simple binding of goat sperm to bovine oocytes and to the perivitelline membrane of the… (more)

▼

This study aimed to carry out the analysis using the simple binding of goat sperm to bovine oocytes and to the perivitelline membrane of the hen s egg yolk compared to binding to the goat oocytes, looking for an alternative to predict the buck semen quality without losing the precision and accuracy of their own oocytes. Sixteen doses of goat semen were collected from 04 breed bucks, 2 Saanen and 2 Alpine via artificial vagina, using an estrus female as dummy. The physical aspects of the semen (volume, sperm whirlwind, force and motility) and sperm concentration were evaluated. Three groups were formed, and 20 μL of semen from the same collection were thawed at a concentration of 5 x 106 spermatozoon/mL and used. In the 1st group goat oocytes (LIGCAP) and in the 2nd group bovine oocytes (LIGBOV) were inseminated and in the 3rd one the perivitelline membrane of the hen s egg yolk (MPVGOD) were used. Two others groups were formed, in the first and in the second one 16 doses of fresh (MPVGOF) and thawed (MPVGOD) semen from the same collection were used, respectively, to inseminate. Semen samples from both groups were used to inseminate perivitelline membrane from chicken egg yolk. The imposed treatment did not affect the animals variables studied (P>0.05). The average volume of semen collected was 1.1 0.15 mL. The average sperm concentration observed was:1.94 0.21 x 109. The average sperm whirlwind was 3.6 0.23. The sperm motility was 77.5 1.37 and 32.2 1.37 for fresh and thawed sperm, respectively. No differences (P>0.05) among the binding assays using the bovine oocytes or hens egg yolk in relation to the goat oocytes were showned. The binding assay using fresh and thawed semen did not differ between themselves. It is concluded that, both the MPVGO and the LIGBOV may be used to replace LIGCAP. The fresh or thawed semen may be used to evaluate the binding capacity of the semen through the MPVGO without compromise the results.

Com este estudo objetivou-se realizar a análise da utilização do teste de ligação dos espermatozóides caprinos ao oócito bovino e a membrana perivitelina da gema do ovo de galinha comparando ao teste utilizando oócito caprino, buscando uma nova alternativa que predissesse a qualidade seminal sem perder a exatidão e acurácia deste ultimo. Utilizou-se 16 partidas de sêmen caprino coletadas de 04 bodes reprodutores, das raças Saanen (02) e Parda Alpina (02), por meio de vagina artificial, utilizando como manequim fêmea em estro natural. Foram avaliados os aspectos físicos do sêmen (volume, aspecto, turbilhonamento, vigor e motilidade espermática) e a concentração espermática. Para cada partida congelada se utilizou uma alíquota de 20 μL de sêmen fresco para inseminar uma membrana perivitelina de gema do ovo, onde se denominou este grupo de ligação em membrana perivitelina da gema do ovo com sêmen fresco (MPVGOF). Após o congelamento outros três grupos foram formados. No primeiro grupo, para cada partida de sêmen descongelado foi inseminada uma membrana perivitelina da gema do ovo, sendo…

Advisors/Committee Members: Antonio Bento Mâncio, Ciro Alexandre Alves Torres, Simone Eliza Facioni Guimarães, José Domingos Guimarães, Marcelo Teixeira Rodrigues.

Subjects/Keywords: Pelvimetria; Novilhas; Puberdade; PRODUCAO ANIMAL; Puberty; Heifers; Pelvimetry

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

APA (6^th Edition):

Santos, M. C. d. R. (2010). Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3161

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):

Santos, Madriano Christilis da Rocha. “Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos.” 2010. Thesis, Universidade Federal de Viçosa. Accessed December 06, 2019. http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3161.

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

MLA Handbook (7^th Edition):

Santos, Madriano Christilis da Rocha. “Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos.” 2010. Web. 06 Dec 2019.

Vancouver:

Santos MCdR. Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos. [Internet] [Thesis]. Universidade Federal de Viçosa; 2010. [cited 2019 Dec 06]. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3161.

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

Council of Science Editors:

Santos MCdR. Métodos alternativos para análises da capacidade de ligação dos espermatozóides caprinos. [Thesis]. Universidade Federal de Viçosa; 2010. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3161

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

Universidade Federal de Viçosa

29. Carla Heloisa Avelino Cabral. Níveis de suplementação para fêmeas bovinas de corte em pastejo.

Degree: 2011, Universidade Federal de Viçosa

URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3533

► This thesis was developed from four experiments with crossbred female with predominance of Zebu breed exposed to different levels of supply multiple supplementation on pasture.… (more)

▼ This thesis was developed from four experiments with crossbred female with predominance of Zebu breed exposed to different levels of supply multiple supplementation on pasture. The objective of first experiment was to evaluate the effect of providing different levels of multiple supplement on the nutritional characteristics and productive performance of heifers on pasture during the rainy-dry transition period. It was used 30 crossbred heifers with predominance of Zebu breed at 19 months of age and body weight of 3035 kg in a completely randomized experimental design. Treatments consisted of mineral supplement (control treatment) and four levels providing 0.5, 1.0, 1.5, 2.0 kg/animal/day of multiple supplement with 300 g crude protein (CP)/ kg of dry matter (DM). There was quadratic effect of multiple supplementation (P<0.10) on daily weight gain (DWG). The intakes of DM and total digestible nutrients (TDN) showed increasing linear relationship (P<0.10) with multiple supplement levels, but there was no effect (P>0.10) on the intake digested NDF (DNDF) and DM apparent digestibility (DMD). There was no effect (P>0.10) of supplementation levels on the microbial nitrogen flow (MNF - g/day), but the microbial efficiency (MEF - CPmic g/kg TDN) and the relationship of microbial nitrogen flow with nitrogen intake (RMNF g/g nitrogen intake) were negative linear profiles. It is concluded that supplementation multiple optimizes grazing heifers performance during the rainy-dry season and supply 1.0 kg of multiple supplement per animal promotes the maximum increment of weight gain. The objective of second experiment was to evaluate the effect of providing different levels of multiple supplement on the nutritional characteristics and productive performance of heifers on pasture during the dry period. It was used 30 crossbred heifers with predominance of Zebu breed at 19 months of age and body weight of 3395 kg in a completely randomized experimental design. Treatments consisted of mineral supplement and four levels providing 0.5, 1.0, 1.5, 2.0 kg/animal/day of multiple supplement with 300 g CP/kg DM. There was in the least squares means trend stabilization of DWG the supply of 0.98 kg of multiple supplement. The intakes of DM and TDN showed increasing linear relationship (P<0.10) with multiple supplement levels. Linear-response-plateau relationships were observed between the coefficients of apparent digestibility of diet fractions and levels of multiple supplementation. The MNF showed positive linear profile for supplementation levels. It is concluded that supplementation multiple optimizes grazing heifers performance during the dry season and supply 1.0 kg of multiple supplement per animal promotes the maximum increment of weight gain. The objective of third experiment was to evaluate the effect of providing different levels of multiple supplement on the nutritional characteristics and productive performance of pregnant heifers on pasture during the dry period. It was used 24 crossbred heifers with predominance of Zebu breed at… Advisors/Committee Members: Edenio Detmann, Sebastião de Campos Valadares Filho, Maristela de Oliveira Bauer, Rilene Ferreira Diniz Valadares, Mário Fonseca Paulino.

Subjects/Keywords: Recria; Novilhas; Bovinos; NUTRICAO E ALIMENTACAO ANIMAL; Heifers; Cattle

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

APA (6^th Edition):

Cabral, C. H. A. (2011). Níveis de suplementação para fêmeas bovinas de corte em pastejo. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3533

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):

Cabral, Carla Heloisa Avelino. “Níveis de suplementação para fêmeas bovinas de corte em pastejo.” 2011. Thesis, Universidade Federal de Viçosa. Accessed December 06, 2019. http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3533.

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

MLA Handbook (7^th Edition):

Cabral, Carla Heloisa Avelino. “Níveis de suplementação para fêmeas bovinas de corte em pastejo.” 2011. Web. 06 Dec 2019.

Vancouver:

Cabral CHA. Níveis de suplementação para fêmeas bovinas de corte em pastejo. [Internet] [Thesis]. Universidade Federal de Viçosa; 2011. [cited 2019 Dec 06]. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3533.

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

Council of Science Editors:

Cabral CHA. Níveis de suplementação para fêmeas bovinas de corte em pastejo. [Thesis]. Universidade Federal de Viçosa; 2011. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=3533

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

Universidade Federal de Viçosa

30. Lívia Vieira de Barros. Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo.

Degree: 2012, Universidade Federal de Viçosa

URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=4600

► This thesis was drawn from three experiments with beef heifers under different supplementation strategies at pasture. The first work aimed to evaluate productive and nutritional… (more)

▼ This thesis was drawn from three experiments with beef heifers under different supplementation strategies at pasture. The first work aimed to evaluate productive and nutritional performance of female calves fed mineral mixture or multiple supplements and milk production, pasture intake and digestibility of beef cows, in Uruchloa decumbens pastures. It was used 48 female calves with average age of 5 months and initial average weight of 125.41.34 kg and their respective dams with initial average weight of 435.2 10.3. The experimental design was the complete random design. Supplements contained approximately 25% of crude protein (CP) and progressive replacement of soybean meal (SB) by cotton seed meal 38% (CS) at the levels of 0; 33; 67 and 100% for treatments CS0, CS33, CS67 and CS100, respectively. Animals in the control treatment (CT) were fed only mineral mixture ad libitum; supplements were offered at the amount of 0.5 kg/animal/day in the other treatments. Daily gain (g) was 687.8; 733.2; 820.0; 760.6, respectively for treatments CT, CS0, CS33, CS67 and CS100. Supplemented female calves presented greater weight gain. It was not found effects of the levels of CS (P>0.10) on daily average gain. Intakes in kg/day of dry matter (DM), organic matter (OM), crude protein (CD), non fibrous carbohydrates (NFC), digested dry matter and total digestible nutrients were greater (P<0.10) for supplemented animals than for non supplemented animals. It was found a linear decreasing effect among levels of replacing SM by CS with the increasing level of CS on intake of digested dry matter and digested neutral detergent fiber. Coefficients of total apparent digestibility of DM, OM, CP and NFC were the highest (P<0.10) for supplemented animals. A decreasing linear effect on digestibility of neutral detergent fiber was found among replacing levels of SM by CS. Supplementation of female calves did not influence the performance of the cows, the milk production and dietary components by the cows (P>0.10). It is concluded that supplementation in the pre-weaning period provides a greater weight of female calves. The second work aimed to evaluate the effect of supplementation with multiple supplement or mineral mixture in the dry season (phase 1) and/or dry-rainy transition season (phase 2) on the nutritional variables and productive performance of beef cattle in Uruchloa decumbens pasture. It was used 40 40 x heifers at initial age and average weight of 8 months and 200 3.74 kg, respectively in a complete random design with four treatments and 10 replicates. In the phase 1, two groups of animals were fed multiple supplement and the other two groups were fed only mineral mixture ad libitum. In the second phase of the experiment, the two groups that received multiple supplements, one continued to receive multiple supplements and the other was receiving only mineral. For the two groups fed only mineral mixture in the phase 1, one continued receiving mineral mixture in phase 2 and the other receiving supplement in phase 2. In the phase 1,… Advisors/Committee Members: Mário Fonseca Paulino, Luciana Navajas Rennó, Mario Luiz Chizzotti, Eduardo Henrique Bevitori Kling de Moraes, Sebastião de Campos Valadares Filho.

Subjects/Keywords: Bovinos; Heifers; Supplementation; Fêmeas; NUTRICAO E ALIMENTACAO ANIMAL; Suplementação; Beef

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

APA (6^th Edition):

Barros, L. V. d. (2012). Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=4600

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):

Barros, Lívia Vieira de. “Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo.” 2012. Thesis, Universidade Federal de Viçosa. Accessed December 06, 2019. http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=4600.

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

MLA Handbook (7^th Edition):

Barros, Lívia Vieira de. “Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo.” 2012. Web. 06 Dec 2019.

Vancouver:

Barros LVd. Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo. [Internet] [Thesis]. Universidade Federal de Viçosa; 2012. [cited 2019 Dec 06]. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=4600.

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

Council of Science Editors:

Barros LVd. Estratégias de suplementação para fêmeas bovinas de corte em diferentes fases do ciclo produtivo. [Thesis]. Universidade Federal de Viçosa; 2012. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=4600

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

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