Ji Dejun, Chang Hong, Chang Chunfang, Geng Rongqing, Li Yonghong and Ma Guolong
Journal of Animal and Veterinary Advances 6 ( 10 ): 1227 - 1230 , 2007
Ji De-Jun, Chang Hong, Chang Chunfang, Geng Rongqing, Li Yonghong, Ma Guo-Long, Chen Hongyu and Li Shi-Ping
Research Journal of Animal Sciences 1 ( 4 ): 120 - 122 , 2007