title: The capacity of the mature cow to lose and recover nitrogen and the significance of protein reserves.
mesh_terms: D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000378:metabolism*; D004032:Diet; D004044:Dietary Proteins; D005215:Fasting; D005243:Feces / Q000032:analysis; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism* / Q000652:urine; D011506:Proteins / Q000378:metabolism*
chemical_list: D004044:Dietary Proteins; D011506:Proteins; D009584:Nitrogen