title: Utilization of urea in laying hens.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D002645:Chickens; D005260:Female; D007553:Isotope Labeling; D007700:Kinetics; D009132:Muscles / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D009587:Nitrogen Isotopes; D010058:Oviposition; D014508:Urea / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D009587:Nitrogen Isotopes; D014508:Urea; D009584:Nitrogen