title: Predicting equations of N duodenal flow in dairy cattle. Effects of level of feeding and proportion of concentrate in the diet.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000378:metabolism* / Q000502:physiology; D004386:Duodenum / Q000378:metabolism*; D004734:Energy Metabolism; D005260:Female; D007774:Lactation; D009584:Nitrogen / Q000378:metabolism*; D011247:Pregnancy; D012820:Silage; D014508:Urea / Q000378:metabolism; D003313:Zea mays
chemical_list: D014508:Urea; D009584:Nitrogen