1. Department of Animal Genetics, Breeding and Reproduction, College of Animal ScienceSouth China Agricultural University Guangzhou 510642 Guangdong China
2. Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, and Key Laboratory of Chicken Genetics, Breeding and ReproductionMinistry of Agriculture Guangzhou Guangdong China
3. Institute of BiotechnologyNanchang Normal University Nanchang 330032 Jiangxi China