Ibe, S. N., and J. C. Okonkwo. “RELATIONSHIP BETWEEN LAYING AGE AND REPEATABILITY OF EGG QUALITY TRAITS”. Nigerian Journal of Animal Production 21, no. 1 (January 3, 2021): 66–70. Accessed June 11, 2026. https://njap.org.ng/index.php/njap/article/view/1107.