Mahmoud, R.E. , Gadallah, H. and Orma, O.A. 2023. Effects of Replacing Protein of Fishmeal with Protein of Poultry By-product Meal on Growth Performance, Body Composition, Liver Histological Changes and Selected Serum Parameters of Nile tilapia . Journal of Advanced Veterinary Research. 13, 6 (Jul. 2023), 871-876.