1. The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock , School of Life Sciences, Inner Mongolia University , Hohhot , China
2. College of Animal Science and Technology, National Beef Cattle Improvement Center , Northwest A & F University , Yangling , China
3. Inner Mongolia Key Laboratory of Biomanufacture, College of Life Sciences , Inner Mongolia Agriculture University , Hohhot , China
4. Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, National Engineering Laboratory for Animal Breeding , College of Animal Science and Technology, China Agricultural University , Beijing , China
5. Maebashi Institute of Animal Science, Livestock Improvement Association of Japan , Maebashi , Japan
6. Department of Agrobiology, Faculty of Agriculture , Niigata University , Niigata , Japan
7. Inner Mongolia Animal Husbandry Station , Hohhot , China