1. Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province; College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
2. Guangdong Wens Nanfang Poultry Breeding Co. Ltd, Yunfu, China
3. Institute of Animal Science of Heilongjiang Province, Qiqihar, China
4. The Fourth Hospital of Harbin Medical University, Harbin, China