E.D. Peebles, K.O. Willeford, R.W. Keirs, K.E. Nestor, Y.M. Saif, C. Wang, C.J. Matyi, J.W. Anderson, M.T. Kidd and R. Pulikanti
International Journal of Poultry Science 7 ( 8 ): 818 - 824 , 2008