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Antimicrobial peptides used as growth promoters in livestock production

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Abstract

Antibiotic growth promoters (AGPs) have been administered in livestock for decades to improve food digestion in growing animals, while also contributing to the control of microbial pathogens. The long-term and indiscrimate use of AGPs has generated genetic modifications in bacteria, leading to antimicrobial resistance (AMR), which can be disseminated to commensal and pathogenic bacteria. Thus, antimicrobial peptides (AMPs) are used to replaced AGPs. AMPs are found in all domains of life, and their cationic characteristics can establish electrostatic interactions with the bacterial membrane. These molecules used as growth promoters can present benefits for nutrient digestibility, intestinal microbiota, intestinal morphology, and immune function activities. Therefore, this review focuses on the application of AMPs with growth promoting potential in livestock, as an alternative to conventional antibiotic growth promoters, in an attempt to control AMR.

Key points

• The long-term and indiscriminate use of AGPs in animal food can cause AMR.

• AMPs can be used as substitute of antibiotics in animal food suplementation.

• Animal food suplementated with AMPs can provied economic efficiency and sustainable livestock production.

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Funding

This work was supported by grants from Fundação de Apoio à Pesquisa do Distrito Federal (FAPDF), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (MC 88887.351521/2019–00), Conselho Nacional de Desenvolvimento e Tecnológico (CNPq), and Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul (FUNDECT), Brazil.

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GRR and MRM revised the literature and wrote, and OLF revised the manuscript. All authors have read and approved the manuscript.

Corresponding author

Correspondence to Octávio Luiz Franco.

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

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The authors declare no competing interests.

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Rodrigues, G., Maximiano, M.R. & Franco, O.L. Antimicrobial peptides used as growth promoters in livestock production. Appl Microbiol Biotechnol 105, 7115–7121 (2021). https://doi.org/10.1007/s00253-021-11540-3

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  • DOI: https://doi.org/10.1007/s00253-021-11540-3

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