title: Vitamin A status of steers as influenced by corn silage harvest date and supplemental vitamin A.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002338:Carotenoids / Q000032:analysis / Q000097:blood; D002417:Cattle / Q000378:metabolism*; D004032:Diet; D007267:Injections; D007273:Injections, Intramuscular; D008099:Liver / Q000378:metabolism; D008297:Male; D012417:Rumen; D012820:Silage; D013997:Time Factors; D014801:Vitamin A / Q000008:administration & dosage / Q000097:blood / Q000378:metabolism*; D003313:Zea mays / Q000032:analysis
chemical_list: D014801:Vitamin A; D002338:Carotenoids