1. College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Animal Genetics, Breeding and Reproduction, Yangling, Shaanxi 712100, China
2. Institute of Cellular and Molecular Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
3. Bureau of Animal Husbandry of Biyang County, Biyang, Henan 463700, China
4. Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan 650212, China
5. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China