title: Nutrient digestibility and N-metabolism by cattle fed rations based on urea and corn silage.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002417:Cattle / Q000378:metabolism*; D004063:Digestion; D004734:Energy Metabolism; D005243:Feces / Q000032:analysis; D008297:Male; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism* / Q000652:urine; D012820:Silage; D014508:Urea / Q000032:analysis / Q000378:metabolism*; D003313:Zea mays / Q000032:analysis
chemical_list: D014508:Urea; D009584:Nitrogen