Effects of Gonadotropins, Oxytocin and Glucose on the Bovine Corpus Luteum at the Fourteenth Day of the Estrual Cycle

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Abstract
A total of 41 virgin heifers of dairy breeding were used to study the effects of in vivo treatment with FSH, oxytocin, HCG and bovine prolactin upon the ability of the CL to synthesize progesterone. There were no significant effects of oxytocin or prolactin alone. FSH treatment produced a significant depression of progesterone synthesis by luteal slices during incubation. HCG treatment in vivo led to a significant drop in initial progesterone concentration. HCG in vitro enhanced progesterone production (P<.01). Glucose in vivo or in vitro enhanced progesterone production by luteal slices during incubation when exogenous pregnenolone was present in the medium. Copyright © 1965. American Society of Animal Science . Copyright 1965 by American Society of Animal Science

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