Weight change, body condition and beef-cow reproduction
I. Data compiled on 686 Angus and Hereford cows 2 to 11 years old fed different levels of energy before and after calving were analyzed by the method of least squares to determine the effect of individual weight change and body condition on (1) likelihood of estrus (LOE) 30 to 90 days postpartum and (2) likelihood of pregnancy (LOP) at first breeding. Cows were designated to weight-change groups according to weight gain (G) or loss (L) 120 days before and 90 to 140 days after calving (GG, GL, LG, or LL) and from calving to first breeding (G or L). Cows were also designated to body condition ...
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