B.O. Esonu, J.C. Azubuike, O.O. Emenalom, E.B. Etuk, I.C. Okoli, H. Ukwu and C.S. Nneji
International Journal of Poultry Science 3 ( 2 ): 112 - 114 , 2004
O.O. Emenalom and A.B.I. Udedibie
International Journal of Poultry Science 4 ( 8 ): 543 - 548 , 2005