Optimal Stocking Density of Vannamei Shrimp Lytopenaeus Vannamei at Low Salinity Using Spherical Tarpaulin Pond

Abstract

The worsening environmental conditions cause disease attack on shrimp farming cannot be avoided, the high cost of Vannamei shrimp production resulting in shrimp farming can only be owned by certain circles. Therefore, it is necessary to find alternative shrimp farming in order to avoid disease and affordable cost to increase production. The farming of vannamei shrimp (Lytopenaeus vannamei) using tarpaulin is expected to minimize production cost, utilize narrow land and far from sea water source, and facilitate control of shrimp health at the time of cultivation. The aim of this research is to obtain the data of shrimp average weight (Mean Body Weight), survival rate and best Food Conversion Ratio for vannamei shrimp at low salinity using container of 1 m3 tarpaulin pond with three different densities which are: A (density of 175 shrimp/m3), B (225 shrimp/m3) and C (275 shrimp/m3) with three replications. Shrimp seeds used were PL 11 (post larvae) which acclimatized prior to the treatment along with the decrease of media salinity until 5-10 ppt for 7 days, then shrimp seeds were placed on the tarpaulin pond according to the treatment. Maintenance was performed for 60 days with Feeding Rate of 5-10% and 4 times/day feeding frequency. Based on the result of the research, it was found that the optimal stocking density of shrimp was shrimp rearing with the density of 175 shrimp/m3 with Mean Body Weight (MBW) value of 10.52 + 0.2 gram, Survival Rate (SR) of 91.39 + 1.0% and Food Conversion Ratio (FCR) of 1.6 ± 0.1. Based on the Tukey test (<0.05) showed that stocking density had an effect on shrimp average weight and vannamei shrimp survival rate.