Feng Tang, Hong-Lin Ren, Yun-Ming Xu, De-Ying Zou, Nan-Nan Liu, Yan-Song Li, Yu Zhou, Jie Song, Zhao-Hui Li, Yuan-Yuan Zhang, Shi-Ying Lu and Zeng-Shan Liu
Journal of Animal and Veterinary Advances 11 ( 10 ): 1564 - 1569 , 2012