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The research aims to study the use of functional feed additive probiotic and phytogenic in rations on the performance of local duck grower phase. The study used 80 heads local duck 8-16 weeks old grower phase. The study was conducted by experimental method, using a completely randomized design (CRD) with 4 treatments of rations and 4 replications (5 ducks/pen). The experiment used completely randomized design with 4 treatment rations: R1 (basal diet /control), R2 (basal diet + phytogenic 0.4%); R3 (basal diet + probiotic 108 CFU); R4 (basal diet + phytogenic 0.4% + probiotic 108 CFU). The observed variables were: feed consumption, body weight gain, final body weight, feed conversion, and mortality of local duck. Data was analyzed by using one-way analysis of variance then continued with Duncan test. The results showed that the use of functional feed additive probiotic and phytogenic gave a positive response to the performance of local duck grower phase. The use of functional feed additive probiotic and phytogenic in ration significantly affect (P<0,05) feed consumption, body weight gain, and final body weight, but no significant affect on ration conversion and mortality local duck grower phase. It was concluded that the use of functional feed additive probiotic and phytogenic could serve as a source of feed additive in local duck ration and able to increase performance of local duck grower phase.