Motion picture analysis of ejaculation in the bull.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004542:Ejaculation; D007315:Insemination, Artificial; D008297:Male; D009040:Motion Pictures; D010413:Penis / Q000502:physiology; D012661:Semen; D012726:Sexual Behavior, Animal; D013094:Spermatozoa