title: Effects of increased vitamin D on calcium retention and egg shell calcification.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D002113:Calcification, Physiologic; D002118:Calcium / Q000032:analysis / Q000378:metabolism*; D002645:Chickens / Q000378:metabolism*; D002762:Cholecalciferol / Q000494:pharmacology*; D004531:Eggs / Q000032:analysis*; D005260:Female; D005503:Food Additives
chemical_list: D005503:Food Additives; D002762:Cholecalciferol; D002118:Calcium