title: Effect of calcium and phosphorus levels on the performance of layers in Nigeria. 1. Egg production, egg shell quality, feed intake and body weight.
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D001835:Body Weight; D002136:Calcium, Dietary / Q000008:administration & dosage*; D002645:Chickens / Q000378:metabolism / Q000502:physiology*; D004032:Diet; D004435:Eating; D004528:Egg Shell / Q000032:analysis*; D005260:Female; D006799:Housing, Animal; D009549:Nigeria; D009751:Nutritional Requirements; D010058:Oviposition; D010758:Phosphorus / Q000008:administration & dosage*; D012621:Seasons; D013696:Temperature
chemical_list: D002136:Calcium, Dietary; D010758:Phosphorus