Y.G. Ye, R.L. Zhang, Y.R. Zhao, Y.J. Geng, D.N. Huang, S.T. Gao, X.H. Li, C.Y. Liu, X.Q. Zhu and R.Q. Lin
Journal of Animal and Veterinary Advances 10 ( 20 ): 2618 - 2623 , 2011