Abstract: The optimal dietary level of inclusion of cooked sword bean meal was investigated. One hundred and twenty (120) day-old Anak broiler chicks were randomly allocated to 4 dietary treatments, each having 3 replicates of 10 chicks in a Completely Randomized Design (CRD). Diet 1 was soybean-based control. While the test feedstuff (cooked sword bean meal) quantitatively replaced 27.27%, 36.36% and 45.45% of soybean meal in diets 2, 3 and 4, respectively. Each diet was offered ad-libitum to the birds for a period of 28 days. There was a general decrease as the quantity of the test diets increased for final live weight, daily weight gain and feed-intake. For feed conversion ratio, diet 2 had the lowest value (1.65) as opposed to (1.87) control diet, (2.2) diet 3 and (2.70) diet 4. For gross margin, diet 2 had the highest value (N163.45) when compared with control diet (N130.05), diet 3 (N120.37) and diet 4 (N85.47), making diet 2 a choice. Values of cut-parts showed significant (p<0.05) differences for back-cut only, which followed no specific pattern that can be attributed the effect of diets. It follows then that any of the treatment could serve for cut-parts. Values of organs showed significant (p<0.05) difference with respect to proventriculus only in favour of diet 2. For blood constituents, the PCV, HB, RBC, WBC, MCV, fall within the normal range for all the diets while MCHC for control diet only, falls within the normal range established for broiler chickens. The MCH for control diet and diet 2 fell within the normal range. (33.2433, 34.18), as opposed to other diets (40.06, 23.51). For Serum chemistry, diet 4 (25.13) urea value was numerically higher than all other values (23.6, 24.00, 22.9). Creatinine values also follow similar trend (1.033, 1.100, 1.000, 1.166). Diet 2 had the highest numerical value for globulin and total protein (15.1, 38.9) while diet 4 (.536.00) had the highest value for alkaline phosphatase. For histopathological changes, the only organ affected was liver starting at 10% dietary level of inclusion. Diet 2 (7.5%) compared favourably with control diet and hence recommended.