Biofloc is a heterogeneous aggregate of suspended particles and variety of microorganisms associated with extracellular polymeric substances. It is composed of microorganisms such as bacteria, algae, fungi, invertebrates and detritus.
Biofloc Fish Farming technology used in Fish and Shellfish culture with limited or zero water exchange under high stocking density, strong aeration and biota formed by biofloc. The culture of biofloc will be productive in the case of culture tanks exposed to sun. The principle of this technique is the generation of nitrogen cycle by maintaining higher C: N ratio through stimulating heterotrophic microbial growth, which assimilates the nitrogenous waste that can be exploited by the cultured spices as a feed. It is a good source of vitamins and minerals, particularly phosphorous. It also has an effect similar to probiotics. The biofloc technology is not only effective in treating the waste but also grants nutrition to the fish and shellfish farming. It is an innovative and cost-effective technology in which toxic materials to the fish and shellfish such as Nitrate, Nitrite, Ammonia can be converted to proteinaceous feed.
What is the Biofloc fish farming?
Biofloc technology is a technique of enhancing water quality in aquaculture through balancing carbon and nitrogen in the system. The technology has recently gained attention as a sustainable method to control water quality, with the added value of producing proteinaceous feed in situ.
Which fish is best for Biofloc fish farming?
Nearly all biofloc systems are used to grow shrimp, tilapia, or carps. Channel catfish and hybrid striped bass are examples of fish that are not good candidates for biofloc systems because they do not tolerate water with very high solids concentrations and do not have adaptations to filter solids from water.
Is Biofloc fish farming profitable?
Biofloc is a Profitable Method of Fish Farming. ... It is a low cost way in which toxic materials for the fish such as Ammonia, Nitrate, and Nitrite can be converted into feed. The principle of this technique is to recycle nutrients
In Aquaculture, the major cost is due to feeding ingredients for fishes. When fishes are fed with high protein diets, approximately 70% of it is discharged as waste in surrounding culture water in the form of nitrogen. With biofloc, we can recycle this waste into feed again reducing the expense of high protein feeds. Biofloc systems also reduces the spread of pathogens while also improving the fish health.