Infertility in the bull, ram and boar: 1. Failure to mate.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis*; D007248:Infertility, Male / Q000209:etiology / Q000662:veterinary*; D008297:Male; D012726:Sexual Behavior, Animal; D012756:Sheep; D013552:Swine