Effect of Reducing the Conventional Feeding Rate on Water Quality and Shrimp Production Variables in Penaeus monodon Shrimp Culture with Zero Water Exchange Model Using Molasses as Carbon Source

In aquaculture particularly for fishes culture it was shown that the application of carbon had brought about good benefits in terms of water quality, fishes production variables and increase in bacterial biomass. Moreover, bacterial biomass used to replace part of the feed requirement of fishes resulting a considerable cost saving and the boasting profit for the farmer. Therefore, the aim of this study was to evaluate the effects of reducing conventional feeding rate on water quality and shrimp production variables within Penaeus monodon shrimp culture with zero water exchange model using molasses. Study shows that using molasses with the level of C: N ratio = 20.0:1 at 75 % of conventional feeding rate is the most promising features of zero water exchange culture system because it offers increased biosecurity, reduced feed costs, waste and water use.