1. Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China
2. Center for Animal Nutrigenomics and Applied Animal Nutrition, Alltech Inc., 3031 Catnip Hill Road, Nicholasville, Kentucky 40356, United States
3. Beijing Alltech Biological Products (China) Co., Ltd., Beijing 100600, China
4. Henan Provincial Institute of Veterinary Drug Control, Zhengzhou 450008, China