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Factors Affecting Weaning Weight Production, T. B. Goehring, D. M. Marshall, D. L. Boggs
Factors Affecting Weaning Weight Production, T. B. Goehring, D. M. Marshall, D. L. Boggs
South Dakota Beef Report, 1991
Weaning weight records from a commercial cow herd were statistically analyzed to demonstrate suspected sources of variation in weaning weight. Data from first-calf heifers and mature cows (3 to 9 year olds) were analyzed separately. For every one day increase in calf age at weaning, weaning weight was increased by 1.65 and 1.76 Ib for first-calf heifers and mature cows, respectively. For every 1 percentage point increase in MPPA of the cow, weaning weight was increased by 4.5 Ib. A 10% advantage in weaning weights and weight per day of age (WDA) was observed in steers over heifers. A 3 …