Jun-Wei Cao, Li-Bing Ma, Yong Zhang, Xiao-Ning He, Cong-Ming Bi, Shu-Ying Peng, Song Hua, Jian-Hong Shu, Wu-JiaFu Sai, Xiang-Chen Li, Chi Zhang and Zhi-Peng Zhang
Journal of Animal and Veterinary Advances 11 ( 15 ): 2692 - 2699 , 2012