F. U. Udeh, I. J. Ohagenyi, N. E. Ikeh, M. O. Onodugo, V. C. Udeh, and J. E. Ezea, “Comparative study on the semen quality characteristics of parthenotes and parent toms reared in Nsukka”, NJAP, vol. 46, no. 5, pp. 62 –, Dec. 2020.