Application of biofloc technology (BFT) in shrimp aquaculture industry

Kasan, Nor Azman; Dagang, Ahmad Nazri; Abdullah, Mhd Ikhwanuddin

doi:10.1088/1755-1315/196/1/012043

Cited by 13 publications

(7 citation statements)

References 8 publications

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“…Owing to the ever increasing and serious environmental challenges bedeviling shrimp aquaculture farms especially in wastewater handling, a new technology has been developed. Biofloc technology (BFT) makes use of isolated biofloc boost-up bacterium inoculums to enhance better water quality of the shrimp culture in order to improve shrimp growth (Kasan et al, 2018;El-Sayed, 2021). This technology is a partial departure from the conventional biological filter used to remove ammonia, nitrate and dissolved organic solid in recirculation aquaculture system.…”

Section: Biofloc Technology (Bft) In Shrimp Aquaculture Wastewater Managementmentioning

confidence: 99%

Recent advances in Shrimp aquaculture wastewater management

Iber

Kasan

2021

Heliyon

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Section: Biofloc Technology (Bft) In Shrimp Aquaculture Wastewater Managementmentioning

confidence: 99%

Recent advances in Shrimp aquaculture wastewater management

Iber

Kasan

2021

Heliyon

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“…Several researchers have pointed out that biofloc grown aquatic animals have enhanced resistance to pathogenic microbial infections ( Figure 3 ) ( Azim and Little, 2008 ; Crab et al, 2012 ; Pérez-Rostro et al, 2014 ; Luis-villaseñor et al, 2016 ; Anand et al, 2017 ; Bossier and Ekasari, 2017 ; Lee et al, 2017 ; Kasan et al, 2018 ; Pacheco-Vega et al, 2018 ; Fatimah et al, 2019 ; Kumar et al, 2020b ). One of the possible scenarios that might be involved behind this induced resistance is improved immunity and health of cultured animals in biofloc as also suggested in an earlier paragraph.…”

Section: Interaction Of Biofloc Derived Microbial Community With Pathogenic Microorganismsmentioning

confidence: 99%

Biofloc Microbiome With Bioremediation and Health Benefits

et al. 2021

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The biofloc system has recently attracted great attention as a cost-effective, sustainable, and environmentally friendly technology and expected to contribute toward human food security (Zero Hunger SDG 2). It is also expected that this endeavor can be adopted widely because of its characteristics of zero water exchange and reduced artificial feeding features. In the biofloc system, the flocs which are generally formed by aggregation of heterotrophic microorganisms, serve as natural bioremediation candidates. These microbes effectively maintain water quality by utilizing the nutrient wastes, mostly originated from digested, unconsumed, and metabolic processes of feed. Additionally, the flocs are important sources of nutrients, mainly a protein source, and when these are consumed by aquaculture animals they improve the growth performance, immunity, and disease tolerance of host against pathogenic microbial infection. Here in this review, we focus on recent advances that could provide a mechanistic insight on how the microbial community developed in the biofloc system helps in the bioremediation process and enhances the overall health of the host. We have also tried to address the possible role of these microbial communities against growth and virulence of pathogenic microbes.

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“…The recommended C:N range to promote biofloc formation is from 11 to 20:1 (Ebeling et al 2006;Avnimelech 2012;Pérez-Fuentes et al 2016). Some studies used 15:1 C:N ratio (Kasan et al 2018;Cang et al 2019) while others adapted the maximum recommended ratio of 20:1 (de Souza et al 2019;Reinoso et al 2019). In practice, up to 20:1 is the recommended C:N ratio on the first three months of culture followed by a reduction to around 15:1 at the latter part of the culture to manage the decline of pH and production of settled biomass (Pérez-Fuentes et al 2016).…”

Section: Experimental Designmentioning

confidence: 99%

Microbial Community Response to Carbon-Nitrogen Ratio Manipulation in Biofloc Culture

Tanay

Abella

Cruz

et al. 2020

TPJF

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Biofloc technology (BFT) is an alternative aquaculture practice that involves the manipulation of carbon-nitrogen ratio (C:N) to manage nitrogenous waste through microbial assimilation. This study aimed to determine the composition of the microbial community present in BFT and describe the microbial community’s response to C:N manipulation. The experiment had a complete randomized design with two set-ups (i.e., BFT and control) in triplicates. The experimental unit was a 120-L rectangular tank stocked with 15 mixed-sex tilapia fish, Oreochromis niloticus, with an average weight of 15±3 g. The C:N was adjusted to 16:1 using molasses. Illumina MiSeq sequencing platform was used, and bioinformatics was conducted in R using dada2 and phyloseq package. Seventeen (17) phyla were identified, but only seven were remarkably abundant, namely: Proteobacteria, Bacteroidetes, Firmicutes, Actinobacteria, Verrucomicrobia, Planctomycetes, and Fusobacteria. Double Principal Coordinates Analysis (DPCoA), Principal Coordinate Analysis (PCoA) of Weighted Unifrac Distance and Canonical Correspondence Analysis (CCoA) revealed an association of Proteobacteria to low ammonia concentration in BFT treatment. On the other hand, phylum Bacteroidetes was clustered towards the control, characterized by high ammonia. Overall, BFT has increased Shannon and Simpson diversity indices compared to the control. Regime change in the microbial community was not easily caused by organic C supplementation because of community robustness to withstand biotic and abiotic disturbances. Controlled laboratory experiment showed that some bacteria species proliferate as a response to C:N manipulation, but established species remained dominant.

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Application of biofloc technology (BFT) in shrimp aquaculture industry

Cited by 13 publications

References 8 publications

Recent advances in Shrimp aquaculture wastewater management

Recent advances in Shrimp aquaculture wastewater management

Biofloc Microbiome With Bioremediation and Health Benefits

Microbial Community Response to Carbon-Nitrogen Ratio Manipulation in Biofloc Culture

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