CAI Hua1,2,XIE Guanghong1,LI Xiaobing1,TANG Xiaochun1,ZHOU Liguang1,WU Qiong1,OUYANG Hongsheng1,WANG Zhe1
1.College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; 2.Jilin Teacher's Institute of Engineering and Technology, Changchun 130052, China