Influence of treated sago effluent on the growth rates of the fresh water fish Catla catla

Author(s): Ramesh F.*, Nagarajan K.

Abstract

Sago industrial effluent was selected in the present study and the effect of this effluent on the growth rates of the fresh water fish Catla catla was studied. The LC50 was determined at 72 hours in both the untreated and treated sago effluents using Finney’s probit analysis. 2% and 25% were determined as LC50 for untreated and treated sago effluents. The growth rates of the fish Catla catla were recorded by exposing them to control, 10%, 15% and 20% concentrations of treated sago effluent. The maximum growth rates were recorded in 15% concentration of the treated sago effluent. At each concentration the feeding rate, conversion rate and conversion efficiency were calculated. The results were discussed in light of the toxicity and the possible utility value of the sago effluent for aquaculture.

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