1 Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
2 Institute of Preventive Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
3 Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China.
4 Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China. chenganchun@vip.163.com.
5 Institute of Preventive Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China. chenganchun@vip.163.com.
6 Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China. chenganchun@vip.163.com.
7 Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China. shunchen@sicau.edu.cn.
8 Institute of Preventive Veterinary Medicine, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China. shunchen@sicau.edu.cn.
9 Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China. shunchen@sicau.edu.cn.