Animal Science Department

 

Date of this Version

12-11-2007

Citation

Published for the Proceedings, The Range Beef Cow Symposium XX December 11, 12 and 13, 2007 - Fort Collins, Colorado, USA.

Comments

Copyright 2007, the authors.

Abstract

It has been understood for decades that reproductive performance is the most important factor affecting production efficiency of a cow-calf enterprise. To maintain a yearly calving interval (one calf every 365 days), a cow must re-breed in 80 to 85 days after calving. With the nutrient priority of beef cattle being body maintenance, growth, lactation, fetal growth, breeding, and body reserve according to Short et al. (1990) indicates that reproduction is low on the list. Body condition score at parturition has been implicated as the single most important factor affecting postpartum interval to estrus and pregnancy in multiparous cows.

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