Fertility from evening and daytime artificial insemination of chickens.
D000818:Animals; D001683:Biological Clocks; D002645:Chickens; D005260:Female; D005298:Fertility; D007315:Insemination, Artificial / Q000662:veterinary*; D010063:Ovum / Q000502:physiology; D011247:Pregnancy; D013997:Time Factors