1. Effects of timed inseminations and supplemental β-carotene on reproduction and milk yield of dairy cows under heat stress;Arechiga;J Dairy Sci,1998
2. Hormone therapy for cystic and repeat-breeder dairy cows;Ax,1985
3. Realistic goals for a dairy breeding program;Ax,1991
4. The Relationship between Estrus Behavior, Ovarian Activity and Milk Progesterone in Postpartum Holstein Cows;Boice,1979
5. Effects of recombinantly-derived bovine somatotropin on reproductive performance of dairy cattle,;Cole;Theriogenology,1991