title: Physiological aspects in the rumen in relation to the level of production in ruminants.
mesh_terms: D000821:Animal Feed; D000818:Animals; D004032:Diet; D004063:Digestion; D004386:Duodenum / Q000382:microbiology; D009584:Nitrogen / Q000378:metabolism; D006109:Poaceae; D011506:Proteins / Q000378:metabolism; D012417:Rumen / Q000502:physiology*
chemical_list: D011506:Proteins; D009584:Nitrogen