title: Effect of source of supplemental nitrogen and level of nitrate on feedlot performance and vitamin A metabolism of fattening beef calves.
mesh_terms: D000641:Ammonia / Q000097:blood; D000821:Animal Feed; D000818:Animals; D001806:Blood Urea Nitrogen; D001835:Body Weight; D002338:Carotenoids / Q000032:analysis / Q000097:blood; D002417:Cattle / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000032:analysis; D005260:Female; D005983:Glutens / Q000378:metabolism; D006454:Hemoglobins / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D008099:Liver / Q000378:metabolism; D008297:Male; D009566:Nitrates / Q000494:pharmacology*; D009584:Nitrogen / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism; D013025:Glycine max; D014508:Urea / Q000378:metabolism; D014801:Vitamin A / Q000097:blood / Q000378:metabolism*; D003313:Zea mays
chemical_list: D005232:Fatty Acids, Volatile; D006454:Hemoglobins; D009566:Nitrates; D014801:Vitamin A; D002338:Carotenoids; D000641:Ammonia; D005983:Glutens; D014508:Urea; D009584:Nitrogen