title: Utilization of naturally occurring NPN-compounds by ruminants.
mesh_terms: D000821:Animal Feed; D000818:Animals; D009566:Nitrates / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D006109:Poaceae / Q000032:analysis; D012417:Rumen / Q000378:metabolism
chemical_list: D009566:Nitrates; D009584:Nitrogen