Ling Yang, Jian-Guo Li, Bin Wang and Le-Ying Zhang
Journal of Animal and Veterinary Advances 9 ( 24 ): 3016 - 3020 , 2010
Zhi-Hua Feng, Yu-Feng Cao, Yan-Xia Gao, Qiu-Feng Li and Jian-Guo Li
Journal of Animal and Veterinary Advances 11 ( 12 ): 2121 - 2125 , 2012