Future of Biofloc Technology in Bangladesh


With a rapidly growing population and corresponding food demand, expansion and intensification of aquaculture is happening in Bangladesh at a fast rate. The aquaculture sector in Bangladesh is contributing to the nation’s economy, assisting in poverty alleviation and supplying necessary nutrition.

However, a vast quantity of waste generation in aquaculture, extensive use of antibiotic and chemicals have become a major cause of concern for the environment as well as public health. Thus, sustainable aquaculture solutions are urgently required to increase the output without compromising the quality and the environment. Moreover, the latest innovations should reduce the aquaculture dependence on water and land and provide socio-economic support to the farming community. Biofloc technology in Bangladesh has emerged as a promising solution that can help in achieving sustainability and other objectives.

Case Study: Swimming In The Murk

Biofloc Technology
By definition, biofloc technology works on the principle of converting waste nutrients into biomass or feed ingredients with the help of microbes, which can be consumed by cultured animals such as fish and shrimps grown in the aquaculture system.

In the biofloc system, fishes or shrimps feed on protein and release excreta. This fish waste along with leftover feed and other organic/inorganic products accumulates and creates toxic substances such as ammonia. Heterotrophic bacteria consume ammonia and convert it into protein. However, to make this possible, a carbon source is added to the system and Carbon-Nitrogen C:N ratio is maintained to create the right condition for the growth of heterotrophic bacteria. This leads to the formation of floc. Thus, heterogenous bacteria assimilate nitrogenous waste or ammonia to produce new biomass, which is consumed by aquatic species cultured. In addition, biofloc is found to have a probiotic effect on some species.

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Benefits of Biofloc Technology

Water Quality and Exchange

Water exchange is a regular feature in traditional aquaculture systems which is necessary to remove waste and polluted water. This happens because of the use of a large quantity of feed for fish growth. This feed containing protein with nitrogen content affects water quality and make the species susceptible to diseases. Various research and findings show that the biofloc system makes zero water exchange possible by turning waste into fish feed and thus reducing water pollution. It happens when heterotrophic bacteria consume nitrogen and reduce ammonia.

Supplementary Feed
For better output and a successful aquaculture business, supplementary feed is a must for farming communities. However, the reliance on artificial feed is quite expensive. The biofloc system is a great alternative to traditional supplementary feed. As per studies, using the biofloc method farmers were able to reduce 29% of supplementary feed for certain species such asL. vannameican. Also, a 20% improvement in feed use was noticed fortilapia.

Immunity & Disease Resistance
Biofloc is known for containing a wide range of beneficial microorganisms which boost the immunity of aquatic animals. Multiple studies have concluded that non-specific immunity of animals was improved significantly in biofloc systems. Moreover, the presence of heterotrophic microbial mass helps in disease resistance among different fish species.

With no water exchange infrastructure required, no extra feed supplied and reduced diseases, biofloc technology makes aquaculture more economical for farmers. Plus, biofloc systems are environment-friendly as no nutrient-rich water is released into the environment.

These are the benefits of biofloc technology. According to reports in Bangladesh, biofloc technology has helped farmers to use as low as 3.3% of water and land compared to ponds for sustainable aquaculture. Also, it has helped companies to get better output than conventional pond farming. As for the future of biotechnology in Bangladesh, consistent research, studies and innovations are happening at a fast rate to further optimize the system.

Organica Biotech is a leading company with advanced solutions for aquaculture. The effective, sustainable and eco-friendly aquaculture solutions include Bioflok. It is a probiotic formulation containing a special bacterial community capable of degrading organic wastes and improving productivity. In addition, it supports healthy flocculation, enhances water quality, prevents diseases and increases output. For more details about our wide range of aquaculture solutions, contact us at any time.

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