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pro vyhledávání: '"T. E. Pilbeam"'
Autor:
T. E. Pilbeam, Michael J. VandeHaar, E.P. Stanisiewski, R.P. Radcliff, L.T. Chapin, D.K. Beede, H.A. Tucker
Publikováno v:
Journal of dairy science. 83(1)
To determine effects of rapid prepubertal growth on first-lactation milk production, Holstein heifers were randomly assigned to one of three treatments. Thirty-five heifers were fed a standard diet to meet NRC recommendations and produce 0.8kg of bod
Publikováno v:
Journal of Animal Science. 58:792-800
Two experiments were conducted to study estrous cycle control regimens that combine progesterone administration via an intravaginal device ( PRID ) with a single injection of prostaglandin F2 alpha (PG). In Exp. I, 242 Holstein heifers were assigned