Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes

Surveillance of antimicrobial resistance (AMR) in Salmonella in livestock (poultry, pig, and cattle) is crucial to maintain food safety. Given the lack of information on the situation in livestock in Paraguay, the aim of this study was to determine the most frequent Salmonella serovars in poultry, p...

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Detalhes bibliográficos
Autores: Irrazábal, Rossana, Iriarte, María V., Álvarez Sánchez, Julio
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/119026
Acesso em linha:https://hdl.handle.net/20.500.14352/119026
Access Level:acceso abierto
Palavra-chave:636.09
Antimicrobial resistance
Salmonella Heidelberg
Salmonella panama
Serovars
Surveillance
Veterinaria
3109 Ciencias Veterinarias
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spelling Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypesIrrazábal, RossanaIriarte, María V.Álvarez Sánchez, Julio636.09Antimicrobial resistanceSalmonella HeidelbergSalmonella panamaSerovarsSurveillanceVeterinaria3109 Ciencias VeterinariasSurveillance of antimicrobial resistance (AMR) in Salmonella in livestock (poultry, pig, and cattle) is crucial to maintain food safety. Given the lack of information on the situation in livestock in Paraguay, the aim of this study was to determine the most frequent Salmonella serovars in poultry, pig and cattle sampled in slaughterhouses in the country in 2020–22 along with their AMR phenotypes using data from a national pilot program. Out of 1,161 samples collected from slaughtered animals originating from 189 farms nationwide, Salmonella was isolated from 91/384 (23.7%) samples from poultry, 52/390 (13.3%) from pigs and 6/387 (1.6%) from cattle. Seven serovars were identified in poultry, with Heidelberg being the most frequent (82.4% of 91 isolates), while the most frequent serovars in pigs were Panama (48.1%) and Typhimurium (38.5%), and only two serovars (Cerro and Braenderup) were identified in cattle. The proportion of resistant isolates ranged from extremely high (70–83% for nalidixic acid and tetracycline) and high (25–40% for nitrofurantoin and ampicilin) to low-moderate (8–18% for cefixime, cefotaxime, amoxicillin, and trimethoprim- sulfamethoxazole) and very low-low (<6% for ciprofloxacin and gentamicin) depending on the antimicrobial. Up to 23 different resistance profiles were found, ranging from pansusceptible (18/143 isolates) to resistance to 2–7 antimicrobials (median = 2), with the predominant serovars in poultry and swine typically being resistant to ≥3 antimicrobials. These results should be backed-up with genomic analyses to determine the genetic mechanisms involved in the resistance profiles observed in order to support coordinated actions for AMR surveillance and control in the country.FrontiersUniversidad Complutense de Madrid20252025-03-2520252025-03-25journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/119026reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1190262026-06-02T12:44:21Z
dc.title.none.fl_str_mv Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
title Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
spellingShingle Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
Irrazábal, Rossana
636.09
Antimicrobial resistance
Salmonella Heidelberg
Salmonella panama
Serovars
Surveillance
Veterinaria
3109 Ciencias Veterinarias
title_short Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
title_full Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
title_fullStr Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
title_full_unstemmed Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
title_sort Non-typhoidal Salmonella in food animals in Paraguay: predominant serovars and resistance phenotypes
dc.creator.none.fl_str_mv Irrazábal, Rossana
Iriarte, María V.
Álvarez Sánchez, Julio
author Irrazábal, Rossana
author_facet Irrazábal, Rossana
Iriarte, María V.
Álvarez Sánchez, Julio
author_role author
author2 Iriarte, María V.
Álvarez Sánchez, Julio
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 636.09
Antimicrobial resistance
Salmonella Heidelberg
Salmonella panama
Serovars
Surveillance
Veterinaria
3109 Ciencias Veterinarias
topic 636.09
Antimicrobial resistance
Salmonella Heidelberg
Salmonella panama
Serovars
Surveillance
Veterinaria
3109 Ciencias Veterinarias
description Surveillance of antimicrobial resistance (AMR) in Salmonella in livestock (poultry, pig, and cattle) is crucial to maintain food safety. Given the lack of information on the situation in livestock in Paraguay, the aim of this study was to determine the most frequent Salmonella serovars in poultry, pig and cattle sampled in slaughterhouses in the country in 2020–22 along with their AMR phenotypes using data from a national pilot program. Out of 1,161 samples collected from slaughtered animals originating from 189 farms nationwide, Salmonella was isolated from 91/384 (23.7%) samples from poultry, 52/390 (13.3%) from pigs and 6/387 (1.6%) from cattle. Seven serovars were identified in poultry, with Heidelberg being the most frequent (82.4% of 91 isolates), while the most frequent serovars in pigs were Panama (48.1%) and Typhimurium (38.5%), and only two serovars (Cerro and Braenderup) were identified in cattle. The proportion of resistant isolates ranged from extremely high (70–83% for nalidixic acid and tetracycline) and high (25–40% for nitrofurantoin and ampicilin) to low-moderate (8–18% for cefixime, cefotaxime, amoxicillin, and trimethoprim- sulfamethoxazole) and very low-low (<6% for ciprofloxacin and gentamicin) depending on the antimicrobial. Up to 23 different resistance profiles were found, ranging from pansusceptible (18/143 isolates) to resistance to 2–7 antimicrobials (median = 2), with the predominant serovars in poultry and swine typically being resistant to ≥3 antimicrobials. These results should be backed-up with genomic analyses to determine the genetic mechanisms involved in the resistance profiles observed in order to support coordinated actions for AMR surveillance and control in the country.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-03-25
2025
2025-03-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/119026
url https://hdl.handle.net/20.500.14352/119026
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers
publisher.none.fl_str_mv Frontiers
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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