Biofloc Technology In Aquaculture Essay

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Application of Biofloc technology in aquaculture systems; a viewpoint
Anjali P. Thilakan1*,Manju Lekshmi. N2.,Sreekanth.G.B2, N. P. Singh2

1Central Institute of Fisheries Education, Andheri (W), Mumbai
2ICAR Central Coastal Agricultural Research Institute, Ela, Old Goa
.
Abstract
Bioflocs are aggregates (flocs) of algae, bacteria, proto¬zoans, and other kinds of particulate organic matter such as feces and uneaten feed and it normally contains 35-40% of protein. Biofloc technology ensures sustainable aquaculture and protecting fish from variety of disorders and infections. Microbial flocs developed under the biofloc technology function as potential food sources for fish. Improved fish production, minimal water exchange and recycling of feed
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Imhoff cones are mainly used to evaluate the bioflocs. This measures the concentration of the biofloc and the desirable range of biofloc concentration in shrimp pond and fish pond is different. In shrimp pond, the desirable range of biofloc concentration is between 1 and 40 ml/litre while a range of 2 to 100 ml/litre is found to be the ideal range in fish pond.
Use of biofloc as a feed for aquaculture species

Biofloc in finfish culture systems
Biofloc technology can be applied in culturing various species of finfishes. The application of biofloc technology in red tilapia culture enhances the water quality and resistance to fish diseases (Widanarni et al., 2012). Azim et al (2008) reported that growth and production of tilapia is increasing in the biofloc system. In biofloc system Labeo rohita(Rohu) had a greater individual weight gain and net fish production compared to control treatment (Mahanad et al, 2013).Widanarni et al (2012) reported that in biofloc system the growth rate and fish survival increased in the Oreochromis species (red tilapia)

Biofloc in shrimp culture
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and Verstraete W., 2012.Biofloc technology in aquaculture: Beneficial effects and future challenges. Aquaculture., 356–357: 351–356.
DeSchryver, P., R. Crab, T. Defroit, N. Boon, and W. Verstraete. 2008. The basics of biofloc technology: the added value for aquaculture. Aquaculture., 277:125-137
Emerenciano, M., Ballester, E. L. C., Cavalli, R. O. and Wasielesky, W., 2011.Effect of biofloc technology (BFT) on the early post larval stage of pink shrimp Farfantepenaeus paulensis: growth performance, floc composition and salinity stress tolerance. Aquacul. Int., 19: 891–901.
Emerenciano, M., Cuzon, G., Arévalo, M., Miquelajauregui, M. M., and Gaxiola, G., 2012. Effect of short-term fresh food supplementation on reproductive performance, biochemical composition, and fatty acid profile of Litopenaeus vannamei (Boone) reared under biofloc conditions. Aquacul. Int.,21(5), 987–1007.
Emerenciano,M Gabriela Gaxiola and Gerard Cuzon .,2013. Biofloc Technology (BFT): A Review for Aquaculture Application and Animal Food Industry
FAO, (2014). The State of World Fisheries and Aquaculture 2014. FAO, Rome.
Hargreaves, J.A., (2013). Biofloc Production Systems for Aquaculture. ,(4503),

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