Abstract
Summary
Prolactin and progesterone were administered to egg laying female and sperm producing male California quail (Lophortyx californicus) in order to ascertain the effects of these hormones on gonad function. In females, prolactin interrupted but did not halt egg laying and had no effect on ovary and oviduct weight and follicle diameter. Progesterone, on the other hand, halted egg laying and decreased ovary weight and follicle diameter. In males, prolactin had no measurable effect on testis activity, but progesterone stimulated spermatogenesis and decreased interstitial cell nuclear diameter.
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