The four stocking ratios of seaweed and prawn biomass were 2, 4, 8 and 16
per tank. The mean concentrations of total ammonia nitrogen (TAN), NO3
−–N and PO4
3−–P in the prawn and seaweed
tanks were significantly lower (Pb0.05) in the integrated culture systems than in the prawn monoculture.
U. lactuca was highly efficient in removing the inorganic nutrients from the culture systems with TAN removal
rate of 59–81% and PO4
3−–P removal rate of 50–55%. Integrating seaweed with prawns did not significantly
alter the specific growth rate (SGR) and survival rate of the prawns (PN0.05)