Bacteria and antimicrobial resistance profile during the composting process of wastes from animal production.

Autor: Ferreira PFA; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., Xavier JF; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., Nunes JF; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., Fonseca IP; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., de Mattos de Oliveira Coelho S; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., Soares de Souza MM; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil., da Silva Coelho I; Department of Veterinary Microbiology and Immunology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, 23897-970, Brazil. irenecoelho@ufrrj.br.
Jazyk: angličtina
Zdroj: Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] [Braz J Microbiol] 2023 Jun; Vol. 54 (2), pp. 1157-1167. Date of Electronic Publication: 2023 Feb 09.
DOI: 10.1007/s42770-023-00912-8
Abstrakt: Livestock waste is widely used in agriculture. Although they provide benefits to the soil, and consequently to plants, they have the potential to contaminate the environment, as they contain pathogenic microorganisms and determinants of antimicrobial resistance, if not properly managed. Therefore, this study aims to evaluate the effect of composting horse bedding and poultry litter in organic and conventional production systems on the occurrence of bacteria in the Enterobacteriales order and to identify their antimicrobial resistance profiles. Bacterial strains were isolated from Salmonella-Shigella and eosin methylene blue solid media from animal waste during the composting process that was conducted for 125 days. After isolation, the strains were identified by the MALDI-TOF technique; the disk diffusion test was then performed for phenotypic detection of antimicrobial resistance. A total of 158 bacterial strains were isolated during composting of three wastes. The Enterobacteriaceae family was the most abundant, whereas Proteus mirabilis and Escherichia coli were the species with the highest percentage in the wastes, which also exhibited a multi-resistance profile. Poultry litter showed a greater abundance of resistant bacteria than horse bedding did. Similarly, a greater number of resistant bacteria was detected in conventional poultry litter than in organic poultry litter. The results obtained reinforce that animal wastes are reservoirs of pathogenic bacteria that are resistant to antimicrobials and highlight the importance of developing management strategies that aim to reduce and/or eliminate these contaminants to guarantee their safe use in agriculture.
(© 2023. The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia.)
Databáze: MEDLINE
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