1. Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing 100193 China
2. Ji'nan Laiwu Yingtai Agriculture and Animal Husbandry Technology Co., Ltd. Ji'nan Shandong 271114 China
3. Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences Ji'nan Shandong 250100 China
4. State Key Laboratory of Sheep Genetic Improvement and Healthy Production Xinjiang Academy of Agricultural and Reclamation Sciences Shihezi Xinjiang 832000 China