“Supplementary Feeding of Working Donkeys : Influence of Plane of Nutrition on Body Condition and Levels of Blood Metabolites”. The Sudan Journal Of Animal Production المجلة السودانية للانتاج الحيواني 12, no. 12 (June 1, 1999): 5. Accessed October 30, 2026. https://sud-jap.sd/Journal/index.php/sjap/article/view/105.