This study was conducted to determine the growth performance and haematology of Isa Brown cockerels to graded levels of sun-dried sweet orange (Citrus sinensis) fruit peel meal (SOPM). Five different diets namely the control(T0) and four test diets T1, T2, T3 and T4 in which SOPM replaced maize 0 %, 2.50 %, 5.0 %, 7.50 and 10.00 % respectively. Each diet served as a treatment and each treatment was replicated 3 times in a completely randomized design. There were 10 birds per replicate making a total of 150 birds for the study. The experiment lasted 8 weeks. The results obtained showed significant (P < 0.05) decrease in final weight, weight gain and feed intake as the level of SOPM in the diet increased. Feed conversion ratio and protein efficiency ratio were not affected. No mortality was recorded. The value of haematological parameters obtained in this study was not significantly (P< 0.05). The results of this study show that SOPM is not a suitable alternative to maize in the form it was used.