title: Effect of calcium and phosphorus levels on the performance of layers in Nigeria. 2. Bone ash and calcium and phosphorus retention.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001842:Bone and Bones / Q000378:metabolism*; D002118:Calcium / Q000032:analysis / Q000378:metabolism*; D002136:Calcium, Dietary / Q000008:administration & dosage*; D002645:Chickens / Q000378:metabolism*; D004032:Diet; D005243:Feces / Q000032:analysis; D005260:Female; D006799:Housing, Animal; D009549:Nigeria; D010058:Oviposition; D010758:Phosphorus / Q000008:administration & dosage* / Q000032:analysis / Q000378:metabolism; D013977:Tibia / Q000032:analysis
chemical_list: D002136:Calcium, Dietary; D010758:Phosphorus; D002118:Calcium