title: The supplementation of a low-nitrogen hay with urea and its effect on nitrogen transformations within the alimentary tract of adult sheep.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000821:Animal Feed; D000818:Animals; D002482:Cellulose / Q000378:metabolism; D004044:Dietary Proteins / Q000378:metabolism; D004386:Duodenum / Q000378:metabolism; D005243:Feces / Q000032:analysis; D005503:Food Additives; D007082:Ileum / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism*; D006109:Poaceae / Q000378:metabolism; D012756:Sheep / Q000378:metabolism*; D014508:Urea / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D005503:Food Additives; D014508:Urea; D002482:Cellulose; D009584:Nitrogen