Babiker, M.S., C. Kijora, S.A. Abbas, and J. Danier. 2009. “Nutrient Composition of Main Poultry Feed Ingredients Used in Sudan and Their Variations from Local Standard Tables Values”. International Journal of Poultry Science 8 (4): 355–358. https://doi.org/10.3923/ijps.2009.355.358.