Genetic control of litter size in sheep.
D000367:Age Factors; D000818:Animals; D001947:Breeding; D005260:Female; D005298:Fertility; D005313:Fetal Death / Q000662:veterinary; D005544:Forecasting; D005823:Genetics; D005838:Genotype; D008297:Male; D010060:Ovulation; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012641:Selection, Genetic; D012756:Sheep / Q000502:physiology*; D014599:Uterus / Q000502:physiology