title: Simulation of animal functions in models of production systems: ruminants on the range.
mesh_terms: D000383:Agriculture; D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000378:metabolism*; D004032:Diet; D004435:Eating; D004734:Energy Metabolism; D005260:Female; D007774:Lactation; D008954:Models, Biological; D009584:Nitrogen / Q000378:metabolism; D011247:Pregnancy; D012417:Rumen / Q000378:metabolism / Q000382:microbiology; D012756:Sheep / Q000378:metabolism*
chemical_list: D009584:Nitrogen