1. College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
2. Jiangsu Jinkangda Group Xuyi Jiangsu China
3. Key Laboratory of Clay Mineral Applied Research of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China
4. Center of Xuyi Palygorskite Applied Technology Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Xuyi China