title: Ruminal nitrogen metabolism and the passage of amino acids to the duodenum in sheep receiving diets containing hay and concentrates in various proportions.
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D004386:Duodenum / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism*; D012756:Sheep / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D009584:Nitrogen