title: A comparison of the efficiency of urea and ammonium salts as non-protein-nitrogen supplements for sheep rations.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000641:Ammonia / Q000378:metabolism; D000818:Animals; D005243:Feces / Q000032:analysis; D007408:Intestinal Absorption; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds; D012756:Sheep; D014508:Urea
chemical_list: D000596:Amino Acids; D000644:Quaternary Ammonium Compounds; D000641:Ammonia; D014508:Urea; D009584:Nitrogen