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Carp Spawn to Fry Rearing in Specially Designed Floating Cage Nursery

Author: B.C. Mohapatra*, D. Majhi and S.K. Panda

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Abstract

The present study focuses on survivability and growth assessment of spawn to fry rearing of rohu, Labeo rohita in a floating cage nursery system, specifically designed and fabricated under ICAR-AICRP on PEASEM (All India Coordinated Research Project on Plastic Engineering in Agriculture Structures and Environment Management) scheme, centre at ICAR-CIFA (Central Institute of Freshwater Aquaculture), Bhubaneswar. The cage system is comprised of a platform of 6 × 6 m size with four net cages synthesized using nylon hapa of 1/40” (635 µm) mesh size. The hapa inside the cages is braced with MS (mild steel) frames of 2 × 2 × 1.5 m. The buoyancy of the floating cage nursery structure is calculated to be 77.37%, which is found suitable for safe operation. The rohu spawn were stocked@ 1000, 2000, 3000 & 4000 numbers per m3 in the four floating cage nurseries (C1-C4) in a 2-hectare reservoir of ICAR-CIFA Farm. The experiment was conducted in duplicate treatments (T1 & T2). The T-1 was cond

Keywords

Floating nursery; Cage culture; Fish seed; Spawn; Fish fry; IMC

Conclusion

In India, there are available 3.15 million ha of reservoirs. To get enhanced biomass production from these water bodies, carp fingerlings or advanced fry are to be stocked at the right time and in the right numbers. Many schemes are there to encourage the owners of these reservoirs to stock them with carp fingerlings, but availability and transport are the major constraints. The current study on fish seed production in specially designed cage nurseries showed encouraging survival rates for Indian Major Carps. The scaled-up facilities of the present design can be fruitful to meet the demand of the fish seed requirement for stocking the large waterbodies of the country.

References

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How to cite this article

Mohapatra, B.C., Majhi, D. and Panda, S.K. (2021). Carp Spawn to Fry Rearing in Specially Designed Floating Cage Nursery. Biological Forum – An International Journal, 13(3a): 160-164.