1. State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
2. Animal Husbandry Institute, Agriculture and Animal Husbandry Academy of Inner Mongolia, Hohhot, China
3. Inner Mongolia Engineering Technology Research Center of Germplasm Resources Conservation and Utilization, College of Life Sciences, Inner Mongolia University, Hohhot, China