title: Effect of separate calcium feeding and a limited feeding program on the metabolizable energy of the diet and on nitrogen, calcium and phosphorus retention in laying hens.
mesh_terms: D000818:Animals; D002118:Calcium / Q000008:administration & dosage* / Q000378:metabolism; D002645:Chickens / Q000502:physiology*; D004032:Diet; D004435:Eating; D004734:Energy Metabolism / Q000187:drug effects*; D005260:Female; D009584:Nitrogen / Q000378:metabolism*; D010058:Oviposition; D010060:Ovulation; D010758:Phosphorus / Q000378:metabolism*
chemical_list: D010758:Phosphorus; D009584:Nitrogen; D002118:Calcium