“Effect of Dietary Replacement of Crushed Sorghum Grains by Bakery by-Products on the Laying Hen Performance ”. The Sudan Journal Of Animal Production المجلة السودانية للانتاج الحيواني, vol. 23, no. 23, June 2021, pp. 49-55, https://sud-jap.sd/Journal/index.php/sjap/article/view/13.