1. State Key Laboratory of Sheep Genetic Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
2. Institute of Animal Science, Tibet Academy of Agricultural & Animal Husbandry Science, Lhasa, China
3. The Service Station of Agricultural and Animal, Husbandry Technical of Zhongba County, Zhongba, China
4. The Service Station of Agricultural and Animal, Husbandry Technical of Gongjue County, Gongjue, China