Babalola, O.A. , Ogungbo, Q.S. , Adebambo, D.A. , Gbadebo, A.M. and Ojuawo, H.T. 2025. Prolactin gene promoter polymorphism in Nigerian indigenous hens and tropically adapted layer breeds. Nigerian Journal of Animal Production. 52, 3 (Jun. 2025), 65–74. DOI:https://doi.org/10.51791/njap.v52i3.8964.