Competition between fresh and aged spermatozoa in fertilizing rabbit eggs.
D000818:Animals; D001947:Breeding; D005260:Female; D005306:Fertilization; D007315:Insemination, Artificial; D008297:Male; D010063:Ovum / Q000166:cytology; D011247:Pregnancy; D011817:Rabbits / Q000502:physiology*; D013094:Spermatozoa; D013997:Time Factors