Adebiyi, O. A., and O. V. Adelowo. “Photoperiodism and Pen Colouration: Effects on the Performance Characteristics of Growing Gilts”. Nigerian Journal of Animal Production 44, no. 3 (January 2, 2021): 89–97. Accessed September 15, 2026. https://www.njap.org.ng/index.php/njap/article/view/593.