Studies of mating behaviour and some factors influencing the sexual response in the male sheep Ovis aries.
D000818:Animals; D003307:Copulation; D004542:Ejaculation; D004971:Estrus; D005260:Female; D008297:Male; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology; D012725:Sexual Behavior; D012756:Sheep
D011374:Progesterone