In this study, it was aimed that determine the effects of on liver + gut weight, total body weight and feed conversion ratio Taraxacum officinale L. and Hypericum scabrum L. extract add ratio broiler rations under normal conditions and heat stress. Taraxacum officinale L. and Hypericum scabrum L. plants used in the research were collected from Erzurum province that added to feed by being extract under suitable conditions. As animal material were used 96 pieces of Ross 308 male broiler chicks