1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
2. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
3. Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
4. West Central Research & Outreach Center, University of Minnesota, Morris, Minnesota, USA
5. Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China