Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture Beijing Key Laboratory for Animal Genetic Improvement Department of Animal Genetics and Breeding College of Animal Science and Technology China Agricultural University Beijing 100193 China;
Department of Animal Genetics and Breeding College of Animal Science and Technology China Agricultural University Beijing 100193 China;
Dwarf chicken; Interferon-γ; Macrophage; Monocyte; Phagocytosis product; Production performance;