1. College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
2. Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process; Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China