The 21 day feeding trial was conducted with one hundred and twenty (120) 1-week old starter broilers to determine performance, haematology and serum biochemistry when fed graded levels of toasted bambaranut waste (TBNW). Five experimental diets that were formulated and compounded such that TBNW was included at 0%, 5%, 10%, 15% and 20% in the diets. The birds were randomly allotted to the five treatments of three replicates each. There were significant differences (P<0.05) among treatments in final body weight (FBW), daily weight gain (DWG) and daily feed intake (DFI) but there was no significant difference (P > 0.05) in feed conversion ratio (FCR). FBW ranged between 468.92 and 537.58g, DWG 18.55-21.38g, DFI 44.24-49.52g and FCR 2.34-2.79. There was no significant difference (P>0.05) among treatments in PCV. However, Hb, WBC, RBC, MCHC, MCH, neutrophils and lymphocytes values of the birds were significantly different (P<0.05). PCV ranged from 30.00 to 31.33%, Hb ranged from 10.27 to 11.60g/dl, WBC ranged 21.07 to 22.86x109/l, RBC ranged from 2.30 to 2.86x1012/l, MCV ranged from 107.33 to 122.67fl, MCHC ranged from 33.43 to 35.10%, MCH ranged from 36.00 to 41.50pg, neutrophils ranged from 4.00 to 6.67% and lymphocytes ranged from 93.33 to 96.00%. Significant differences (P<0.05) occurred among treatments in total protein, globulin, creatinine, glucose, aspartate aminotransferase, alanine aminotransferase but there was no significant difference (P>0.05) in the serum albumin of birds across the treatments. Total protein ranged from 3.20 to 3.77mg/dl, albumin ranged from 2.10 to 2.37g/dl, globulin ranged from 1.30 to 1.67g/dl, creatinine ranged from 0.47 to 0.80mg/dl, glucose ranged from 195.33 to 219.67mg/dl, aspartate aminotransferase ranged from 195.00 to 258.00µ/l, and alanine aminotransferase ranged from 12.40 to 20.50µ/l. Inclusion of TBNW in the diets resulted in poorer performance indices but can be tolerated at not more than 10%. However, TBNW was not deleterious to the health of the birds