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 useful products, ie., proteinaceous feed. It is the technology used in the aquaculture systems 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 the sun.
Biofloc system was developed to improve environmental control over aquatic animal production. In aquaculture, the strong influential factors are the feed cost (accounting to 60% of the total production cost) and the most limiting factor is the water/land availability. High stocking density and rearing of aquatic animals require wastewater treatment. Biofloc system is a wastewater treatment that has gained vital importance as an approach in aquaculture.
The principle of this technique is the generation of the nitrogen cycle by maintaining a 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. The biofloc technology is not only effective in treating the waste but also grants nutrition to aquatic animal.
The biofloc technology has been implemented in shrimp farming due to its bottom-dwelling habit and resistance to environmental changes. Studies have been conducted to assess the larval growth and reproductive performance of shrimps and Nile tilapia. An improved breeding performance was observed in shrimp reared in the biofloc system when compared to that of normal culture practices. Similarly improved larval growth performance was also noticed.
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Design: Saiful Islam
Video By: Saiful Islam
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BIOFLOC FISH FARM DESIGN | Biofloc Fish Farming
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