This experiment was conducted to evaluate the effects of varying levels of Vernonia amygdalinaleafmealasanticoccidialinbroilerchickens.Atotalofonehundredandfiftyday oldmarshalbroilerchickswererandomlyallottedtofivedietarytreatmentswith30birdsper treatment and replicated three times in a completely randomized design for a period of eight weeks. The treatments were: T1 naturally infected and treated with Coccidiostat drug (positive control), T2 naturally infected and not treated with Vernonia amygdalina (negative control), T3, T4 and T5 were naturally infected and treated with Vernonia amygdalina at 0.2%, 0.4% and 0.6% to 100kg of feed, respectively. Carcass and organ parameters were monitored while the liver and caecum were assessed for histopathological lesions. Significant differences (p<0>