1. Key Laboratory of Grass-Feeding Livestock Healthy Breeding and Livestock Product Quality Control, Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences, Hohhot 010030, China
2. College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
3. Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
4. Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Hohhot 010031, China
5. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China