1. College of Veterinary Medicine, Southwest University, Chongqing, China
2. Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
3. Chongqing Veterinary Scientific Engineering Research Center, Southwest University, Chongqing, China
4. Institute of Animal Husbandry and Veterinary Medicine of Guizhou Academy of Agricultural Science, Guiyang, China
5. Rongchang Animal Epidemic Prevention and Control Center, Chongqing, Rongchang, China
6. Hainan Key Lab of Tropical Animal Reproduction and Breeding and Epidemic Disease Research, College of Animal Science and Technology, Hainan University, Haikou, China