title: The influence of different sources of energy and different levels o urea feeding on serum proteins and non-protein nitrogen values.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001798:Blood Proteins; D002417:Cattle / Q000378:metabolism*; D008297:Male; D009584:Nitrogen / Q000097:blood*; D014508:Urea / Q000378:metabolism*
chemical_list: D001798:Blood Proteins; D014508:Urea; D009584:Nitrogen