1. Institute of Animal Husbandry and Veterinary Medicine; Xinjiang Academy of Agricultural and Reclamation Sciences; Shihezi 832000 China
2. State Key Laboratory of Sheep Genetic Improvement and Healthy Breeding; Xinjiang Academy of Agricultural and Reclamation Sciences; Shihezi 832000 China
3. CAS Key Laboratory of Animal Ecology and Conservation Biology; Institute of Zoology; Chinese Academy of Sciences (CAS); Beijing 100101 China
4. College of Life Sciences; University of Chinese Academy of Sciences (UCAS); Beijing 100049 China