Due to the relatively high cost of the penaeid diet ($0.84 US/kg),
feeding costs in the penaeid diet treatment were 38% higher than those
in the Phase fed treatment. With no production advantage for prawns
fed the penaeid diet exclusively, there appears to be no benefit to using
higher protein diets during the first 12 weeks of prawn pond production.
Although it is inevitable that increased competition for natural food will
occur at higher densities and will eventually become a limiting factor, it