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A review of functional feeds and the control of Aeromonas infections in freshwater fish

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Abstract

To limit the use of antibiotics in farmed fish and their potential negative impacts on public health and the environment, an evaluation of “functional alternatives” is required. The availability of effective treatments to control fish diseases is one of the most significant challenges facing aquacultures and veterinarians to reduce consequences of antimicrobial resistance. This paper includes results from in vivo studies in major freshwater-farmed fish species (salmonids, cyprinids, and cichlids), focusing on the efficacy of functional alternatives against Aeromonas spp. infections. It also outlines the recent biocontrol advances and potential alternative treatments in aquaculture. Functional alternative products can increase the resistance against Aeromonas spp. particularly by increasing the immunocompetence of fish. Many diverse alternative products such as probiotics, prebiotics, plants, essential oils, algae phages, minerals, and nanoparticles have been tested, but the diversity of the experimental designs makes it difficult to compare the efficacy of the tested products. It suggests the standardization of investigations on functional feed products for each fish species against a specific pathogen. This review also recommends farm research on functional feed alternatives in natural conditions in order to evaluate the decrease of antibiotic consumption in fish farms.

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Funding

This work has partly been funded by Ministère de l’Agriculture et de l’Alimentation (Ecoantibio plan).

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Correspondence to Niki Hayatgheib.

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The authors declare that they have no conflict of interest.

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This article does not contain any studies with animals performed by any of the authors.

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Data sharing not applicable—no new data generated.

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Hayatgheib, N., Moreau, E., Calvez, S. et al. A review of functional feeds and the control of Aeromonas infections in freshwater fish. Aquacult Int 28, 1083–1123 (2020). https://doi.org/10.1007/s10499-020-00514-3

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  • DOI: https://doi.org/10.1007/s10499-020-00514-3

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