applications. This research was studied at the low salinity area about 5 2 ppt of 2 rai shrimp cultural pond size, the chitosan-coating on the shrimp feed had shown significantly increasing in the FCR and ADG of the shrimp. The optimum dose of chitosan used, as coating solution was 400 ppm due to chitosan can work as the growth promoter to increase the growth rate with the reduction of the death rate. The total weight of harvested shrimp was maximum at 3,083.25 kg, which was significantly more than the control group about 1,233.25 kg with the best FCR and ADG of 1.15 and 0.1972 g/head-day. At the same time, the average body weight of shrimp was 21.69 g/head at the highest survival rate of 78.97 %. Moreover, chitosan-coating on the shrimp feed resulted in the increasing of the shrimp healthy and decreasing of the