Ovarian characteristics and reproductive performance of the aged cow.
D000367:Age Factors; D000818:Animals; D002417:Cattle; D005260:Female; D007247:Infertility, Female / Q000473:pathology*; D008297:Male; D010048:Ovarian Cysts / Q000453:epidemiology / Q000662:veterinary; D006080:Ovarian Follicle; D010053:Ovary / Q000033:anatomy & histology / Q000473:pathology*; D010298:Parity; D011247:Pregnancy; D011270:Pregnancy, Animal