Factors associated with the incidence of retained placentas.
D000818:Animals; D000831:Animals, Newborn; D001724:Birth Weight; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D005260:Female; D005865:Gestational Age; D007774:Lactation; D050356:Lipid Metabolism; D008297:Male; D008892:Milk / Q000378:metabolism; D010922:Placenta Diseases / Q000209:etiology / Q000662:veterinary*; D011247:Pregnancy; D011248:Pregnancy Complications; D012621:Seasons; D012737:Sex Factors