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Biofloc Technology in Aquaculture and Its Potentiality: a Review

MA Halim
Assistant Director
Bangabandhu Academy for Poverty Alleviation and Rural Development (BAPARD), Kotalipara, Gopalganj, Bangladesh

S Nahar
Deputy Director
Bangladesh Fisheries Research Institute (BFRI), Bangladesh

MM Nabi
Joint Director
Bangabandhu Academy for Poverty Alleviation and Rural Development (BAPARD), Kotalipara, Gopalganj, Bangladesh

Abstract/ Executive Summary:

The ever-increasing population of Bangladesh demands more intensive production from aquaculture without sacrificing quality. However, managing the wastes from aquaculture has become an emerging issue for an environmental safeguard. So the expansion and intensification of aquaculture will need to take place in a sustainable way. Biofloc technology (BFT), the new “blue revolution” in aquaculture, could be promising in attaining this sustainability. It is mainly based on the principle of waste nutrients recycling, in particular nitrogen, into microbial biomass that can be used in situ by the cultured animals or be harvested and processed into feed ingredients. Such technique is based on in situ microorganism production which plays three major roles: (i) maintenance of water quality, by the uptake of nitrogen compounds generating in situ microbial protein; (ii) nutrition, increasing culture feasibility by reducing feed conversion ratio (FCR) and a decrease of feed costs; and (iii) competition with pathogens. The potentiality of biofloc in aquaculture will be discussed in this review.

Keywords: Biofloc, Aquaculture, Potentiality, Future challenges

Location: Bangabandhu Academy for Poverty Alleviation and Rural Development (BAPARD), Kotalipara, Gopalganj, Bangladesh

Start Date:

End Date:

Program Area: Knowledge Management

Commodity: Aquatic animal

Objectives:

To findings will need to be communicated to farmers as the implementation of biofloc technology will require upgrading their skills.

Methodology:

The study was carried out based on the information through a review of related thesis, journals, reports, and books. Some practical knowledge was gained through observing research presentations related to biofloc and aquaculture. The necessary data were collected from the internet, different annual statistical yearbooks of Bangladesh, National Fish week compendiums, newspapers, watching with different on-going researches in YouTube, and consulting associated consultants and researchers.

Source of Information: International Journal of Fisheries and Aquatic Studies 2019; 7(5): 260-266

Article Link (Online Journal): www.fisheriesjournal.com

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The study of length-weight relationship data of Labeo calbasu species could be a very useful tool in fisheries research because it permits the conversion of growth in-length equation to growth-in-weight that can be used in fisheries management, fisheries biology, and aquatic ecology. The value of condition factor (K) of L. calbasu revealed that the ecological aspect of Kaptai Lake was found to be suitable for their growth. As the mean relative condition factor values for all three groups of Kalibaus fish were equal to expected or standard value Kn=1.0, and the mean condition factor values were greater than the theoretical value (K>1), therefore it is to be concluded that the Kaptai Lake could be a better culture ground for L. calbasu and might be considered as the reservation tank for the species.

Knowledge Management: Journal