Jian-Ling Liu, Kang-Kang Guo, Zheng-Yuan Su, Xin-Gang Xu, He-Lin Li, Peng-Bo Ning, Hai-Xia Hong, Xiao-Yun Yang and Yan-Ming Zhang
Journal of Animal and Veterinary Advances 11 ( 18 ): 3312 - 3317 , 2012