Urea and the fate of dietary nitrogen in the rumen.
D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000378:metabolism*; D004386:Duodenum / Q000378:metabolism; D005260:Female; D009584:Nitrogen / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism*; D014508:Urea / Q000378:metabolism*
D014508:Urea; D009584:Nitrogen