Ndubuisi S. Machebe, Simeon O. Ugwu, C.S. Atu, and Ndofor-Foleng H. Mbunwen, “Intake of Some Biological Seeds and Root Extracts of Plants Improves Fertility and Hatchability of Turkey Eggs”, J. Basic Appl. Sci., vol. 9, pp. 538–542, Jan. 2013.