Kang-Kang Guo, Qing-Hai Tang, Peng-Bo Ning, He-Lin Li, Wei Liu, Qi-Zhuang Lv, Wu-Long Liang, Zhi Lin, Cheng-Cheng Zhang and Yan-Ming Zhang
Journal of Animal and Veterinary Advances 12 ( 2 ): 234 - 241 , 2013