Vol. 11, Special Issue 4 (2022)

120 numbers of day old sex separated broiler chicks, were wing banded, weighed and randomly allotted to six treatment groups with two replicates of ten chicks each. The treatment groups consisted of group I [basal diet]; group 2[basal diet + Withania somnifera 0.5% extract], group 3[basal diet+Withania somnifera 1% extract], group 4 [basal diet+ cyproheptadine 1mg /kg] group 5 [basal diet + cyproheptadine 1mg /kg + Withania somnifera 0.5% extract] group 6 [basal diet + cyproheptadine 1mg/kg + Withania somnifera 1% extract]. As a result of supplementation of withania somifera and cyproheptadine in broiler diet increases the body weight [p<0.05] in the first, second, third week and fifth week but fourth and sixth week treatment groups did not differ from control group. No significant differences were observed among the groups in body weight gain at first to sixth week of age. Feed conversion ratio of groups III, IV and V did not differ significantly either from group I and VI or group II. The cumulative feed consumption (g) of groups sixth week Group VI had significantly higher (p<0.05) cumulative feed consumption. Dietary supplementation of Withania somnifera either alone or in combination with cyproheptadine could increase the production performance.