1. Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province College of Animal Science and Technology Northwest A&F University Yangling Shaanxi China
2. College of Veterinary Medicine Northwest A&F University Yangling Shaanxi China
3. Henan Zhumei swine Breeding Group Co., Ltd. Zhengyang Henan Province China
4. Teaching and Research Section of Biotechnology Nanning University Nanning Guangxi China