1. Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
2. Academy of Animal Science and Veterinary Medicine; Qinghai University; Xining Qinghai 810016 China
3. Golmud Station of Animal Husbandry and Veterinary; Haixi Autonomous Prefecture of Qinghai Province; Golmud Qinghai 816000 China
4. Animal Epidemic Disease Prevention and Control Center; Haixi Autonomous Prefecture of Qinghai Province; Delingha Qinghai 817099 China
5. General Station of Animal Husbandry of Qinghai Province; Xining 810008 China
6. CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources; Institute of Animal Science; Chinese Academy of Agricultural Sciences (CAAS); Beijing 100193 China
7. International Livestock Research Institute (ILRI); Nairobi 00100 Kenya