1. College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
2. Jiangsu Institute of Poultry Science, Chinese Academy of Agricultural Sciences, Yangzhou, Jiangsu, China
3. Jiangsu Key Laboratory of Animal Genetic Breeding and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China