Mohammed, A., A. O. Raji, and J. U. Igwebuike. “Genetic Variability of Nigerian Sheep Breeds at the Insulin-Like Growth Factor-1 (IGF-1) Gene Locus”. Nigerian Journal of Animal Production 45, no. 1 (December 27, 2020): 51–60. Accessed December 11, 2025. https://njap.org.ng/index.php/njap/article/view/367.