The culture of Nile tilapia at different salinities using a biofloc system

Souza, Rafael Liano de; Lima, Eduardo Cesar Rodrigues de; Melo, Fabiana Penalva de; Ferreira, Maria Gabriela P.; Correia, Eudes de Souza

doi:10.5935/1806-6690.20190031

Cited by 14 publications

(5 citation statements)

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“…BFT systems are designed to reduce water consumption and feed demand commonly exhibited in land‐based aquaculture systems 34 . Even zero water exchange approaches are considered 35–45 . The operational design of the system is simple.…”

Section: Resultsmentioning

confidence: 99%

“…Valenzuela‐Jiménez et al 40 have recently demonstrated that rearing Atlantic white shrimp ( Penaeus setiferus ) juveniles at 35 ppt in the BFT system resulted in better immune response which led to a reduction in stress compared to shrimp reared in freshwater. Souza et al 41 reared Nile tilapia ( Oreochromis niloticus ) in a BFT system to investigate the influence of different levels of salinity (0, 4, 8, 12 and 16 g/L) on the zootechnical performance and animal welfare of fish. The authors reported that with up to 12 g/L, tilapia showed no signs of stress and exhibited good growth performance.…”

Section: Resultsmentioning

confidence: 99%

“…34 Even zero water exchange approaches are considered. [35][36][37][38][39][40][41][42][43][44][45] The operational design of the system is simple. The nitrogenous waste from aquaculture is metabolized by heterotrophic bacteria, which,…”

Section: Rearing and Cultivation Techniquesmentioning

confidence: 99%

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Potential of innovative marine aquaculture techniques to close nutrient cycles

Lothmann

Sewilam

2022

Reviews in Aquaculture

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Aquaculture is an established technique for producing marine species. However, it creates large amounts of nutrient-rich waste. Therefore, it is worth examining the methods available to use these nutrients and close the nutrient cycle. This review covers research activities of different saline water methods for food production.These are Integrated Multi-Trophic Aquaculture (IMTA), Biofloc Technology (BFT) and marine aquaponics. IMTA combines on-and offshore aquaculture with macroalgae and filter feeder production. Commercial implementations have been achieved but are not widely used. Especially shrimp are suitable for cultivation in saline BFT systems. Few commercial deployments exist. There is a well-established market for the products of IMTA and BFT systems. Marine aquaponics is increasingly being tested as part of an expansion of Recirculating Aquaculture Systems (RAS) and BFT systems, but commercial implementations are not known. Moreover, there is no established market for the resulting salt-tolerant plants (halophytes). Market prices and popularity were evaluated to assess the economic potential of the different plant and aquaculture species farmed with IMTA, BFT and marine aquaponics. There are established markets for well-known products, but therefore the competition is greater. Niche products are offered occasionally, but often achieve top prices. Closing nutrient cycles and increasing saline water usage for food production as well as high product diversity are necessary to mitigate the increasing pressure on freshwater resources and to be able to feed the growing world population. Therefore, IMTA, BFT and marine aquaponics are promising techniques for reducing pressure on freshwater resources and improving food supply.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Potential of innovative marine aquaculture techniques to close nutrient cycles

Lothmann

Sewilam

2022

Reviews in Aquaculture

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“…In the same study, stress indications were noted at 16 ppt salinity and above. (Hosain et al, 2021;de Souza et al, 2019) Abbreviations: BFT, biofloc technology; N, nitrogen; P, phosphorus; TSS, total suspended solids.…”

Section: Ideal Range Key Considerations Referencesmentioning

confidence: 99%

Biofloc technology as part of a sustainable aquaculture system: A review on the status and innovations for its expansion

McCusker

Bolton‐Warberg

Davies

et al. 2023

Aquaculture Fish & Fisheries

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Increased food demand, reflecting a rising global human population, attaining 8 billion in 2022, has furthered the intensification of farmed aquatic animal production. Intensification practices can be resource demanding for micro and macronutrients, dedicated feeds, fossil fuels, chemotherapeutics, and water. Water replaces evaporative losses and may be used to dilute nutrient‐rich wastewater. As an alternative to wastewater discharge, biofloc technology (BFT) uses microbes to manage nutrient levels in production systems. A microbial community grown at high densities can assimilate waste metabolites for growth. This is promoted by increasing the carbon–nitrogen (C:N) ratio using a combination of aquafeed fed to the fish and an additional carbohydrate source, for example, starch, molasses, or bran. The microbial biomass offers a continuous and additional food source to the farmed animal, thus reducing the need for finished aquafeeds and lowering the feed conversion ratio. Although the approach relies on multiple interacting species, BFT can be deployed in relatively low technology settings. This review considers the basis of BFT and identifies areas for innovation and expansion. For example, control of light quantity and quality can influence the biofloc and hence the growth of cultured species. Research on biofloc aquaculture is dominated by studies using tilapia and shrimp, but the technology could be applied to other species, particularly species that are tolerant of biofloc conditions and not highly carnivorous. Biofloc may be a useful biosecurity tool for all or part of the life cycle, and meals made from dried biofloc may enhance the production of cultured species. The key benefits of BFT can potentially be seen in reduced water consumption, lower feed requirements, and improved fish health. This review differs from current review papers in proposing the use of a life cycle assessment in conjunction with BFT, which may be a useful tool for describing and communicating the relative benefits of biofloc systems and their wider environmental impact. This study will serve as a useful knowledge base of BFT information for students, researchers, and stakeholders alike, offering a central source of the main aspects around the culturing of biofloc, key parameters, common species used, areas of potential improvement, and a discussion on where the future of BFT may lie.

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“…The tilapia Oreochromis niloticus, known for its ease of handling and feeding habits, has been utilized in integrated systems, showing positive results in solid filtration [7,8]. Due to its robustness, tilapia can also be produced in brackish water without negative effects on its zootechnical performance [9]. Both species could bring benefits when integrated into the cultivation of a main species, as in the farming of the Pacific white shrimp Penaeus vannamei, the most cultivated shrimp in the world, especially because it is an euryhaline [10], easy to manage and adapt [11], and holds significant economic interest [12], which has been employed as a primary species in integrated systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

Carvalho,

Brandão,

Zemor

et al. 2024

Fishes

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Different fertilization regimes in biofloc systems influence the predominance of distinct bacterial populations, impacting water quality and organism performance. This study evaluates the growth and nutrient absorption of the macroalgae Ulva lactuca when cultivated in an integrated system with Penaeus vannamei and Oreochromis niloticus in chemoautotrophic and heterotrophic systems. The experiment lasted 45 days and comprised two treatments, each with three replicates: chemoautotrophic—utilizing chemical fertilizers; heterotrophic—employing inoculum from mature biofloc shrimp cultivation, supplemented with organic fertilizers. Each treatment consisted of three systems, each containing a 4 m3 tank for shrimp, 0.7 m3 for tilapia, and 0.35 m3 for macroalgae, with continuous water circulation between tanks and constant aeration. Water quality analyses were carried out during the experiment, as were the performances of the macroalgae and animals. The data were subjected to a statistical analysis. Results revealed an increase in macroalgae biomass and the removal of nitrate (57%) and phosphate (47%) during cultivation, with a higher specific growth rate observed in the chemoautotrophic treatment. Nonetheless, the heterotrophic treatment exhibited higher levels of protein in the macroalgae (18% dry matter) and phosphate removal rates (56%), along with superior maintenance of water quality parameters. Tilapia performance varied across treatments, with a higher final weight and weight gain recorded in the heterotrophic treatment. The recycling of water from an ongoing biofloc cultivation with organic fertilization demonstrated viability for macroalgae cultivation within an integrated system involving shrimp and fish.

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The culture of Nile tilapia at different salinities using a biofloc system

Cited by 14 publications

References 2 publications

Potential of innovative marine aquaculture techniques to close nutrient cycles

Potential of innovative marine aquaculture techniques to close nutrient cycles

Biofloc technology as part of a sustainable aquaculture system: A review on the status and innovations for its expansion

Effect of Organic or Inorganic Fertilization on Microbial Flocs Production in Integrated Cultivation of Ulva lactuca with Oreochromis niloticus and Penaeus vannamei

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