1. Animal Nutrition and Bio-feed, Chongqing Key Laboratory of Herbivore Science, College of Animal Science and Technology, Southwest University, Chongqing 400715, China
2. Yunnan Animal Husbandry Station, Kunming 650225, China
3. Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 610066, China
4. Livestock and Poultry Biological Products Key Laboratory of Sichuan Province, Sichuan Animtche Group Co., Ltd., Chengdu 610066, China