Characterization of Butana Cattle Production System in the River Nile State, Sudan: Raga A. Y. Yagoub1, L. A. Musa2and M-K . A. Ahmed3. (2021). The Sudan Journal Of Animal Production المجلة السودانية للانتاج الحيواني, 23(23), 21-29. https://sud-jap.sd/Journal/index.php/sjap/article/view/10