1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, Jiangsu Province, China;
2. College of Animal Sciences and Technology, Shandong Agricultural University, Taian, Shandong Province, China;
3. Ministry of Agriculture, Institute of Effective Evaluation of Feed and Feed Additive (Poultry Institute), Yangzhou, Jiangsu Province, China;
4. Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu Province, China