Reproductive performance of sows on a ration devoid of carotene and vitamin A.
D000818:Animals; D002338:Carotenoids; D003677:Deficiency Diseases / Q000662:veterinary*; D005260:Female; D012098:Reproduction; D013552:Swine; D013553:Swine Diseases; D014802:Vitamin A Deficiency / Q000662:veterinary*
D002338:Carotenoids