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Abstract
It is estimated that in Florida alone the cost of infertility of beef cows exceeds $86 million annually. Infertility occurs when cows become pregnant but fail to calve, become pregnant late in the breeding season and fall out of the annual production cycle or fail to become pregnant during the breeding season. The latter two causes of infertility are a direct result of the length of the post-partum interval. This 4-page fact sheet was written by Kalyn Bischoff, Vitor Mercadante, and G. Cliff Lamb, and published by the UF Department of Animal Science, March 2012.
AN277/AN277: Management of Postpartum Anestrus in Beef Cows (ufl.edu)
References
Kiracofe, G. H. 1980. "Uterine Involution: Its Role in Regulating Postpartum Intervals."J. Anim. Sci. Sl (Supp 1. II):l6.
Kunkle, W.E., R.S. Sand, and D.O. Rae. 1997. Effects of Body Condition of Productivity in Beef Cattle. SP144. Gainesville: University of Florida Institute of Food and Agricultural Sciences.
Lamb, G.C., C. Dahlen, V. Mercadante, and K. Bischoff. 2011. What Is the Economic Impact of Infertility in Beef Cattle? AN208. Gainesville: University of Florida Institute of Food and Agricultural Sciences. http://edis.ifas.ufl.edu/an208.
Selk, G.E., R.P. Wettemann, K.S. Lusby, and R.T. Rusby. 1986. The Importance of Body Condition at Calving on Reproduction in Beef Cows. Animal Science Research Report. Oklahoma State University.
Smith, V.G., J.R. Chenault, J.F. McAllister, and J.W. Lauderdale. 1987. "Response of Postpartum Beef Cows to Exogenous Progestogens and Gonadotropin Releasing Hormone." J. Anim. Sci. 64:540-51. https://doi.org/10.2527/jas1987.642540x
United States Department of Agriculture (USDA). 2011.National Agricultural Statistics Service (NASS) and Agricultural Statistics Board 2011 Cattle Inventory. ISSN: 1948-9099.