Article
Influence of genotype and yield and composition of milk on interval to first postpartum ovulation in milked beef and dairy cows.
Journal of animal science - 1 Feb 1992
Masilo B S, Stevenson J S, Schalles R R, Shirley J E
Abstract excerpt
Our objectives were to investigate the effects of genotype, yield and composition of milk, and changes in BW and body condition on the initiation of cyclic ovarian activity in nonsuckled beef and dairy cows milked twice daily. Nulliparous heifers were selected from three breeds, 12 Angus, 13 Simmentals, and 26 Holsteins, based on their EBV for milk yield. Cows were machine-milked twice daily, and daily milk yield...
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