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We used a backpropagation neural network (BP-NN) model to predict the water quality in intensive (300PLs/m 2 ) Litopenaeus vannamei shrimp tanks. The model has a tan-sigmoid transfer function for the hidden layer and a linear transfer function for the output layer. It was developed using measured water quality data that were generated over 120days (from 1 July to 28 October 2008) with weekly...
The present study investigated the effects of carbohydrate addition on the water quality, carbon/nitrogen ratios, densities of total bacteria, nitrogen cycle bacteria and zooplankton, and shrimp growth performance in a zero-water exchange system for Litopenaeus vannamei intensive culture. Sucrose was added as the carbohydrate into the water at five levels, i.e., 0, 25%, 50%, 75% and 100% of the theoretical...
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