1Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming, P. R. China.
2College of Food Science and Technology, Yunnan Agricultural University, Kunming, P. R. China.
3Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming,
P. R. China.
4Key Laboratory of Animal Nutrition and Feed Science, Kunming, P. R. China.
Email: [email protected]