Mineral Nutrition Research Division Key Laboratory of Animal Nutrition of Animal Science Academy of Agricultural Sciences 100193;
Poultry Mineral Nutrition Laboratory of Animal Science and Technology University 225000;
Institute of Animal Nutrition Agricultural University 611130;
Department of Animal Science Ocean University 524088;
Department of Animal Science Normal University of Science and Technology 066004.;
Bone characteristic; BROILER; Calcium; Gene expression; REQUIREMENT;