PRODUCTION OF SHRIMP IN INTENSIVE AQUACULTURE SYSTEM OF VANAME SHRIMP (Litopenaeus vannamei) USING DIFFERENT CULTURAL SLUDGE MANAGEMENT METHODS

The main problem in intensive shrimp pond culture is a decrease in the quality of proper water during shrimp rearing and the emergence of disease. This problem resulted in decreased productivity of vaname shrimp. One of the efforts made is through the application of sludge management methods, with the aim of reducing the pile of sludge at the bottom of intensive ponds. Sludge management methods include the system, CRS (Close Resirculating System), Semi Close, and biofloc. The writing method used is literature study, for data analysis by comparing the average production data and water quality in each system. Sludge management in the CRS system, move the remaining organic material into the settling pond. In semi close system, remove sludge periodically through central draine. sludge management in the biofloc system, utilizing heterotopic bacteria to treat the remaining organic matter. The largest Average Daily Gain (ADG) is present in the bioflocked system at 0.16 g / day and the smallest in the semi close system at 0.11 g / day. Survival rate (SR) is the highest survival rate in the biofloc system with SR reaching 88%, and the lowest in the CRS system, namely 81%. The best Feed Convertion Ratio (FCR) in the biofloc system is that the FCR value reaches 1.26, the next is the CRS system with FCR 1.33, and in the semi-close system the FCR value reaches 1.93. The best sludge management system of the three systems is the biofloc system. The average daily water quality data of the three systems are still in optimal conditions, although the parameters of ammonia, nitrite, and nitrate are high, but at the survival rate of the shrimp the three systems are still above 80%.