Isaac, U. C., U. H. Udoh, and R. J. Nosike. “Effect of Genotype on Semen Quality Traits of Main and Reciprocal Crossbred Chickens”. Nigerian Journal of Animal Production 46, no. 2 (December 17, 2020): 32–39. Accessed August 21, 2026. https://mail.njap.org.ng/index.php/njap/article/view/6.