title: Urea excretion in the pig: an indicator of protein quality and amino acid requirements.
mesh_terms: D000596:Amino Acids; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001806:Blood Urea Nitrogen; D002369:Castration; D004032:Diet; D004044:Dietary Proteins; D005069:Evaluation Studies as Topic; D005247:Feeding Behavior; D008239:Lysine / Q000008:administration & dosage*; D008297:Male; D008722:Methods; D009584:Nitrogen / Q000652:urine; D009751:Nutritional Requirements; D010940:Plant Proteins; D013552:Swine / Q000378:metabolism*; D013997:Time Factors; D014364:Tryptophan / Q000008:administration & dosage*; D014508:Urea / Q000652:urine*; D003313:Zea mays
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D010940:Plant Proteins; D014364:Tryptophan; D014508:Urea; D008239:Lysine; D009584:Nitrogen