1. College of Animal Science and Technology, Northwest A&F University, Yangling, China
2. Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
3. College of Biology Sciences and Engineering, Beifang University of Nationalities, Yinchuan, Ningxia 750021, China
4. Qinghai Academy of Animal Science and Veterinary Medicine, Xining, China
5. College of Pharmacy, Yancheng Teachers University, Yancheng, China