Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban

Autores
Lencina, Florencia Aylen; Olivero, Carolina Raquel; Zimmermann, Jorge Alberto; Stegmayer, María Angeles; Sirini, Noelí Estefanía; Frizzo, Laureano Sebastián; Soto, Lorena Paola; Signorini Porchiett, Marcelo Lisandro; Zbrun, Maria Virginia
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The increase in colistin resistance in diverse environments, led to the ban on colistin use in veterinary medicine in Argentina. The present study aimed to assess the presence of colistin resistance and the mcr genes in E. coli isolated from Argentinian poultry slaughterhouses and retail markets, following the ban on colistin use. The multidrug resistance profiles, the presence of the stx1, stx2, and eae virulence genes, and the clonal relationship among isolates were also analysed. At the slaughterhouse, 549 samples were collected, including caecal content (n = 270), neck skin (n = 270), and slaughterhouse wastewater (n = 9). At the retail market, 241 breast skin samples were collected. The isolates were obtained from TBX agar supplemented with colistin, followed by determination of the uspA gene. Colistin agar test and agar microdilution were used to determine the minimum inhibitory concentration for colistin and other critical antibiotics. Multiplex polymerase chain reactions were used to determine the presence of mcr and virulence genes. Pulsed-field gel electrophoresis was used to compare different pulse types. At the slaughterhouse, colistin-resistant E. coli (n = 49) were detected in 36 samples. At retail market colistin-resistant E. coli (n = 2) were recovered from one sample (0.41%). Among colistin-resistant isolates (n = 51), 58.82% carried the mcr-1 gene, and 90.19% exhibited multidrug resistance. The highest proportion of colistin-resistant E. coli was grouped into 11 clusters. Stx1, stx2, and eae genes were identified in two isolates. These findings demonstrate the persistence and circulation of colistin-resistant E. coli and the mcr-1 gene in Argentinian slaughterhouses and retail markets after the colistin ban.
EEA Rafaela
Fil: Lencina, Florencia Aylen. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Lencina, Florencia Aylen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Olivero, Carolina Raquel. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Olivero, Carolina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Zimmermann, Jorge Alberto. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Zimmermann, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Stegmayer, María Angeles. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Stegmayer, María Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Sirini, Noelí Estefanía. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Sirini, Noelí Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Frizzo, Laureano Sebastián. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Soto, Lorena Paola. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Signorini, Marcelo. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Signorini, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Signorini, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Zbrun, Maria Virginia. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Zbrun, Maria Virginia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Zbrun, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; Argentina
Fuente
Veterinary Research Communications 50 : article number 85. (January 2026)
Materia
Escherichia coli
Colistin
Poultry
Food Chains
Resistance to Antibiotics
Colistina
Aves de Corral
Cadena Alimentaria
Resistencia a los Antibióticos
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/25188
Acceder
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network_name_str INTA Digital (INTA)
spelling Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin banLencina, Florencia AylenOlivero, Carolina RaquelZimmermann, Jorge AlbertoStegmayer, María AngelesSirini, Noelí EstefaníaFrizzo, Laureano SebastiánSoto, Lorena PaolaSignorini Porchiett, Marcelo LisandroZbrun, Maria VirginiaEscherichia coliColistinPoultryFood ChainsResistance to AntibioticsColistinaAves de CorralCadena AlimentariaResistencia a los AntibióticosThe increase in colistin resistance in diverse environments, led to the ban on colistin use in veterinary medicine in Argentina. The present study aimed to assess the presence of colistin resistance and the mcr genes in E. coli isolated from Argentinian poultry slaughterhouses and retail markets, following the ban on colistin use. The multidrug resistance profiles, the presence of the stx1, stx2, and eae virulence genes, and the clonal relationship among isolates were also analysed. At the slaughterhouse, 549 samples were collected, including caecal content (n = 270), neck skin (n = 270), and slaughterhouse wastewater (n = 9). At the retail market, 241 breast skin samples were collected. The isolates were obtained from TBX agar supplemented with colistin, followed by determination of the uspA gene. Colistin agar test and agar microdilution were used to determine the minimum inhibitory concentration for colistin and other critical antibiotics. Multiplex polymerase chain reactions were used to determine the presence of mcr and virulence genes. Pulsed-field gel electrophoresis was used to compare different pulse types. At the slaughterhouse, colistin-resistant E. coli (n = 49) were detected in 36 samples. At retail market colistin-resistant E. coli (n = 2) were recovered from one sample (0.41%). Among colistin-resistant isolates (n = 51), 58.82% carried the mcr-1 gene, and 90.19% exhibited multidrug resistance. The highest proportion of colistin-resistant E. coli was grouped into 11 clusters. Stx1, stx2, and eae genes were identified in two isolates. These findings demonstrate the persistence and circulation of colistin-resistant E. coli and the mcr-1 gene in Argentinian slaughterhouses and retail markets after the colistin ban.EEA RafaelaFil: Lencina, Florencia Aylen. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Lencina, Florencia Aylen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Olivero, Carolina Raquel. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Olivero, Carolina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Zimmermann, Jorge Alberto. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Zimmermann, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Stegmayer, María Angeles. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Stegmayer, María Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Sirini, Noelí Estefanía. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Sirini, Noelí Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; ArgentinaFil: Frizzo, Laureano Sebastián. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; ArgentinaFil: Soto, Lorena Paola. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; ArgentinaFil: Signorini, Marcelo. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; ArgentinaFil: Signorini, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Signorini, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Zbrun, Maria Virginia. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; ArgentinaFil: Zbrun, Maria Virginia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Zbrun, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; ArgentinaSpringer2026-02-12T12:42:31Z2026-02-12T12:42:31Z2026-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/25188https://link.springer.com/article/10.1007/s11259-025-11004-30165-73801573-7446https://doi.org/10.1007/s11259-025-11004-3Veterinary Research Communications 50 : article number 85. (January 2026)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-02-20T10:24:35Zoai:localhost:20.500.12123/25188instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-02-20 10:24:35.385INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
title Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
spellingShingle Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
Lencina, Florencia Aylen
Escherichia coli
Colistin
Poultry
Food Chains
Resistance to Antibiotics
Colistina
Aves de Corral
Cadena Alimentaria
Resistencia a los Antibióticos
title_short Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
title_full Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
title_fullStr Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
title_full_unstemmed Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
title_sort Persistence of colistin-resistant Escherichia coli and the mcr-1 gene in the poultry chain, after the colistin ban
dc.creator.none.fl_str_mv Lencina, Florencia Aylen
Olivero, Carolina Raquel
Zimmermann, Jorge Alberto
Stegmayer, María Angeles
Sirini, Noelí Estefanía
Frizzo, Laureano Sebastián
Soto, Lorena Paola
Signorini Porchiett, Marcelo Lisandro
Zbrun, Maria Virginia
author Lencina, Florencia Aylen
author_facet Lencina, Florencia Aylen
Olivero, Carolina Raquel
Zimmermann, Jorge Alberto
Stegmayer, María Angeles
Sirini, Noelí Estefanía
Frizzo, Laureano Sebastián
Soto, Lorena Paola
Signorini Porchiett, Marcelo Lisandro
Zbrun, Maria Virginia
author_role author
author2 Olivero, Carolina Raquel
Zimmermann, Jorge Alberto
Stegmayer, María Angeles
Sirini, Noelí Estefanía
Frizzo, Laureano Sebastián
Soto, Lorena Paola
Signorini Porchiett, Marcelo Lisandro
Zbrun, Maria Virginia
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Escherichia coli
Colistin
Poultry
Food Chains
Resistance to Antibiotics
Colistina
Aves de Corral
Cadena Alimentaria
Resistencia a los Antibióticos
topic Escherichia coli
Colistin
Poultry
Food Chains
Resistance to Antibiotics
Colistina
Aves de Corral
Cadena Alimentaria
Resistencia a los Antibióticos
dc.description.none.fl_txt_mv The increase in colistin resistance in diverse environments, led to the ban on colistin use in veterinary medicine in Argentina. The present study aimed to assess the presence of colistin resistance and the mcr genes in E. coli isolated from Argentinian poultry slaughterhouses and retail markets, following the ban on colistin use. The multidrug resistance profiles, the presence of the stx1, stx2, and eae virulence genes, and the clonal relationship among isolates were also analysed. At the slaughterhouse, 549 samples were collected, including caecal content (n = 270), neck skin (n = 270), and slaughterhouse wastewater (n = 9). At the retail market, 241 breast skin samples were collected. The isolates were obtained from TBX agar supplemented with colistin, followed by determination of the uspA gene. Colistin agar test and agar microdilution were used to determine the minimum inhibitory concentration for colistin and other critical antibiotics. Multiplex polymerase chain reactions were used to determine the presence of mcr and virulence genes. Pulsed-field gel electrophoresis was used to compare different pulse types. At the slaughterhouse, colistin-resistant E. coli (n = 49) were detected in 36 samples. At retail market colistin-resistant E. coli (n = 2) were recovered from one sample (0.41%). Among colistin-resistant isolates (n = 51), 58.82% carried the mcr-1 gene, and 90.19% exhibited multidrug resistance. The highest proportion of colistin-resistant E. coli was grouped into 11 clusters. Stx1, stx2, and eae genes were identified in two isolates. These findings demonstrate the persistence and circulation of colistin-resistant E. coli and the mcr-1 gene in Argentinian slaughterhouses and retail markets after the colistin ban.
EEA Rafaela
Fil: Lencina, Florencia Aylen. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Lencina, Florencia Aylen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Olivero, Carolina Raquel. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Olivero, Carolina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Zimmermann, Jorge Alberto. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Zimmermann, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Stegmayer, María Angeles. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Stegmayer, María Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Sirini, Noelí Estefanía. Universidad Nacional del Litoral. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Sirini, Noelí Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Veterinarias del Litoral. (ICiVet-Litoral). Laboratorio de Análisis de Alimentos; Argentina
Fil: Frizzo, Laureano Sebastián. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Soto, Lorena Paola. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Signorini, Marcelo. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Signorini, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Signorini, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Zbrun, Maria Virginia. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Departamento de Salud Pública; Argentina
Fil: Zbrun, Maria Virginia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina
Fil: Zbrun, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; Argentina
description The increase in colistin resistance in diverse environments, led to the ban on colistin use in veterinary medicine in Argentina. The present study aimed to assess the presence of colistin resistance and the mcr genes in E. coli isolated from Argentinian poultry slaughterhouses and retail markets, following the ban on colistin use. The multidrug resistance profiles, the presence of the stx1, stx2, and eae virulence genes, and the clonal relationship among isolates were also analysed. At the slaughterhouse, 549 samples were collected, including caecal content (n = 270), neck skin (n = 270), and slaughterhouse wastewater (n = 9). At the retail market, 241 breast skin samples were collected. The isolates were obtained from TBX agar supplemented with colistin, followed by determination of the uspA gene. Colistin agar test and agar microdilution were used to determine the minimum inhibitory concentration for colistin and other critical antibiotics. Multiplex polymerase chain reactions were used to determine the presence of mcr and virulence genes. Pulsed-field gel electrophoresis was used to compare different pulse types. At the slaughterhouse, colistin-resistant E. coli (n = 49) were detected in 36 samples. At retail market colistin-resistant E. coli (n = 2) were recovered from one sample (0.41%). Among colistin-resistant isolates (n = 51), 58.82% carried the mcr-1 gene, and 90.19% exhibited multidrug resistance. The highest proportion of colistin-resistant E. coli was grouped into 11 clusters. Stx1, stx2, and eae genes were identified in two isolates. These findings demonstrate the persistence and circulation of colistin-resistant E. coli and the mcr-1 gene in Argentinian slaughterhouses and retail markets after the colistin ban.
publishDate 2026
dc.date.none.fl_str_mv 2026-02-12T12:42:31Z
2026-02-12T12:42:31Z
2026-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/25188
https://link.springer.com/article/10.1007/s11259-025-11004-3
0165-7380
1573-7446
https://doi.org/10.1007/s11259-025-11004-3
url http://hdl.handle.net/20.500.12123/25188
https://link.springer.com/article/10.1007/s11259-025-11004-3
https://doi.org/10.1007/s11259-025-11004-3
identifier_str_mv 0165-7380
1573-7446
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Veterinary Research Communications 50 : article number 85. (January 2026)
reponame:INTA Digital (INTA)
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reponame_str INTA Digital (INTA)
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instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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