1. Institute of Quality Standards & Testing Technology for Agro-Products; Key Laboratory of Agro-product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing 100081 China
2. Key Laboratory of Agri-Food Quality and Safety; Ministry of Agriculture; Beijing 100081 China
3. Institute for Animal Husbandry and Veterinary Research; Henan Academy of Agriculture Science; Zhengzhou 450002 China