Probiotic can help in stimulating the growth and development of immune organs, improve level of immunoglobulin and antibody as well as improve immunity in animal. This present study was carried out to determine the effect of feed enriched with probiotics on the growth performance and hepatosomatic index of broiler quails. A total of 240 quails were divided into four groups with three replicates per group. Each treatments group has a different feeding treatment in which treatment 1 (T0) act as a control with no probiotic added, treatment 2 (T1) with 0.05% probiotic added, treatment 3 (T2) with 0.20 % probiotic added and treatment 4 (T3) with 0.35 % probiotic added, respectively. Probiotic was mixed in the feed of quails starting from day 14 until day 42 and the quails were fed ad-libitum twice per day. The results showed that there was a significant different between treatment group and control in weight gain (p<0.05), average daily gain (ADG), feed conversion ratio (FCR) and feed intake (FI). T2 showed the best growth performances among the other groups after day 42.There was no significant different in hepatosomatic index between treatment group and control (p<0.05). This might suggest that different concentration of probiotic has no adverse effect on liver of quails. In conclusion, the study suggests that probiotic can improve growth performance with no adverse effect on the liver of the quails
