This experiment was carried out to identify the influence of different levels of cassava roots as a source of energy in broiler diets on performance and carcass characteristics of broiler chicken. 160 unsexed one-day old (Ross 308) broiler chicks were distributed in a completely randomized design with four dietary cassava roots, viz.0%, 15%, 25% and 40 %of the total rations, respectively. Each group was subdivided into 4 replicates with ten birds each. The weight gain, feed intake, and feed conversion ratio were recorded. Carcass, carcass cuts and internal organs were evaluated. During starter, finisher and entire experimental periods, all performance parameters were affected significantly by dietary treatments. The only exception was reported with the FCR during the starter period which was not influenced by treatments. Chemical composition of meat was not affected, except for crude protein and ether extract. It was concluded that adding cassava roots meal could be used at 25% of the total ration without any adverse effect on the performance of broiler birds.