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Effect of Biofloc Technology with different Carbon sources on Growth Performance of Pearl Spot Etroplus suratensis under Flow through System

Author: V. Susitharan, C.B.T. Rajagopalsamy, C. Sindhu, S.J. Abisha Juliet Mary and R. Dinesh*

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Abstract

Biofloc is an unsung hero of sustainable aquaculture that has been recently adopted by most fish and shrimp farmers to scale up their production. The present study evaluated the effect of biofloc technology with different carbon sources on water quality and growth performance of pearl spot (Etroplus suratensis) in a flow through system consisting of a reservoir tank (1000 L), rearing tanks (500 L), and effluent tank (300 L) for 60 days. The biofloc has been made with different carbon sources, viz., Jaggery (T1), Cassava flour (T2), Corn flour (T3) and a control with a conventional carbon source (sugar treated) and with a carbon/nitrogen (C/N) ratio of 15:1 in a reservoir tank. The effluent from the rearing tank is collected in the effluent tank, then the effluent is pumped into the reservoir tank. The Pearl spot E. suratensis was stocked at a rate of 25 fishes per 0.3 cubic metre, with mean length and weight ranging from 2.62 ± 0.005 cm to 2.71 ± 0.005 cm and 1.05 ± 0.002 g to 1.08

Keywords

Biofloc, Pearl spot, Carbon sources, Jaggery, Growth performance.

Conclusion

The present investigation has given a clear insight into the nursery rearing of Pearl Spot E. suratensis, which readily accepted biofloc as an in-situ feed without any supplementary pellet feed for the entire duration of experimental nursery rearing. Furthermore, the growth increment of the pearl spot in terms of SGR was 2.34 times greater in BFT than in conventional systems which appear to be impressive. Therefore, the present study concludes that jaggery can result in better growth and production of pearl spots. These findings will entice stakeholders to accelerate adoption in the field for improved growth and yield.

References

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How to cite this article

V. Susitharan, C.B.T. Rajagopalsamy, C. Sindhu, S.J. Abisha Juliet Mary and R. Dinesh (2022). Effect of Biofloc Technology with Different Carbon Sources on Growth Performance of Pearl Spot Etroplus suratensis under Flow Through System. Biological Forum â€