1. Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
2. State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
3. Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
4. Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China