L. Saidu, A.M. Wakawa, P.A. Abdu, D.F. Adene, H.M. Kazeem, K.C. Ladan, M. Abdu, R.B. Miko, M.Y. Fatihu, J. Adamu and P.H. Mamman
International Journal of Poultry Science 7 ( 9 ): 913 - 916 , 2008