1. State Key Laboratory of Agricultural Microbiology, The Cooperative Innovation Center for Sustainable Pig Production, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
2. College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan 450046, China
3. Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Wuhan, Hubei 430070, China
4. International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China