Research into the use of alternative energy feedstuff for poultry and livestock production cannot be overemphasized due to the increasing price of conventional energy sources such as maize and guinea corn. One hundred 4-week old broiler chickens were used in a 28-day feeding trial to evaluate the performance and economics of production of finisher broiler chickens fed yellow maize replaced with graded levels of pro-vitamin A cassava meal. The chickens were grouped into four treatments and replicated five times in a completely randomized design. Birds were fed diets containing 0 %, 50 %, 75 % and 100 % of pro-vitamin A cassava meal in replacement for maize tagged T , T , T and T , respectively. All 1 2 3 4 management practices were strictly observed. Birds on T and T (0 and 50%) had 1 2 statistically higher (p<0.05) similar values of weight gain (835.20 and 831.71g) than those from T and T with same statistical values (765.80 and 705.15g). 3 4 Similar trend was observed in feed intake of 3082.80 and 3130.96g for T and T 1 2 while T and T had 2919.00 and 2858.80g, respectively. Feed conversion ratio 3 4 was similar and better in T and T (3.69 and 3.76) which differed significantly 1 2 (p<0.05) with T and T (3.81 and 4.05), respectively. Cost of feed/kg gain 3 4 significantly reduced with increase in percentage replacement levels of maize with pro-vitamin A cassava. Thus, the replacement of maize with pro-vitamin A cassava at 50% can optimally improve the performance of broiler chickens without adverse effect with reduced cost of production.