title: Problems in feeding urea to ruminants.
mesh_terms: D000641:Ammonia / Q000378:metabolism; D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D009584:Nitrogen / Q000378:metabolism; D012417:Rumen / Q000378:metabolism; D014508:Urea / Q000378:metabolism
chemical_list: D000641:Ammonia; D014508:Urea; D009584:Nitrogen