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Cattle Boards
Breeding / Calving Issues
birth weights lower in fall?
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<blockquote data-quote="RanchManager" data-source="post: 616891" data-attributes="member: 8827"><p>I'm getting a little gun shy about posting opinions based on actual data and reseach (I've learned from this forum that I am an idiot), so here are some actual citations:</p><p></p><p>Butt, E.A., S. Pearce, T. Stephenson and M.E. Symonds. 2004. Maternal cold exposure from mid to late gestation results in increased adipose insulin like growth factor (IGF)-I mRNA expression and</p><p>heavier birth weight with no effect on fat mass. Endocrine Abstracts 8:21</p><p></p><p>Deutscher G., D. Colburn and R. Davis. 1999. Climate Affects Calf Birth Weights and Calving Difficulty. UNL Beef Cattle Report, University of Nebraska Cooperative Extension MP 71 <a href="http://ianrpubs.unl.edu/beef/report/mp71-03.htm" target="_blank">http://ianrpubs.unl.edu/beef/report/mp71-03.htm</a></p><p></p><p>Kimura, Y., K. Okamura, T. Watanabe, T. Takahashi, I. Haga and A. Yajima. 1998. The Effect of Cold Stress on Uterine Artery Blood Flow Velocity Waveforms in Late Pregnant Women with and without Preeclampsia". Tohoku J. Exp. Med. 186: 71-77</p><p></p><p>Revella, D. K., S.F. Main, B.H. Breier, Y.H. Cottam, M. Hennies and S.N. McCutcheon. 2000. Metabolic responses to mid-pregnancy shearing that are associated with a selective increase in the birth weight of twin lambs Dom. Endo. 18 409-422</p></blockquote><p></p>
[QUOTE="RanchManager, post: 616891, member: 8827"] I'm getting a little gun shy about posting opinions based on actual data and reseach (I've learned from this forum that I am an idiot), so here are some actual citations: Butt, E.A., S. Pearce, T. Stephenson and M.E. Symonds. 2004. Maternal cold exposure from mid to late gestation results in increased adipose insulin like growth factor (IGF)-I mRNA expression and heavier birth weight with no effect on fat mass. Endocrine Abstracts 8:21 Deutscher G., D. Colburn and R. Davis. 1999. Climate Affects Calf Birth Weights and Calving Difficulty. UNL Beef Cattle Report, University of Nebraska Cooperative Extension MP 71 [url=http://ianrpubs.unl.edu/beef/report/mp71-03.htm]http://ianrpubs.unl.edu/beef/report/mp71-03.htm[/url] Kimura, Y., K. Okamura, T. Watanabe, T. Takahashi, I. Haga and A. Yajima. 1998. The Effect of Cold Stress on Uterine Artery Blood Flow Velocity Waveforms in Late Pregnant Women with and without Preeclampsia”. Tohoku J. Exp. Med. 186: 71-77 Revella, D. K., S.F. Main, B.H. Breier, Y.H. Cottam, M. Hennies and S.N. McCutcheon. 2000. Metabolic responses to mid-pregnancy shearing that are associated with a selective increase in the birth weight of twin lambs Dom. Endo. 18 409-422 [/QUOTE]
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