Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials

Abstract This study investigated faecal carriage and antimicrobial resistance (AMR) of Salmonella enterica recovered from rangeland goats. Faecal samples (n = 400) were collected at slaughter from four consignments of goats (n = 100 samples per consignment), each from one of four localities in Weste...

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Autores principales: Khalid Al-Habsi, David Jordan, Ali Harb, Tanya Laird, Rongchang Yang, Mark O’Dea, Caroline Jacobson, David W. Miller, Una Ryan, Sam Abraham
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Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/bbd198f968244d839af7cdfc8c20ded6
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spelling oai:doaj.org-article:bbd198f968244d839af7cdfc8c20ded62021-12-02T15:09:10ZSalmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials10.1038/s41598-018-33220-52045-2322https://doaj.org/article/bbd198f968244d839af7cdfc8c20ded62018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33220-5https://doaj.org/toc/2045-2322Abstract This study investigated faecal carriage and antimicrobial resistance (AMR) of Salmonella enterica recovered from rangeland goats. Faecal samples (n = 400) were collected at slaughter from four consignments of goats (n = 100 samples per consignment), each from one of four localities in Western Australia. Carriage of Salmonella spp. was detected in 106 samples (26.5%; 95% CI 22.4–31.0%). The rate of faecal carriage for each consignment ranged between 23–30%. PCR assays targeting the STM2755 and STM4497 genes revealed 84.9% (90/106) of the isolates were of serovar Typhimurium. Salmonella Chester (11/106, 10.4%) and S. Saintpaul (5/106, 4.7%) were characterised at invA and ompF genes. Antimicrobial susceptibility testing demonstrated that 84.0% of isolates were susceptible to all tested (n = 13) antimicrobials. Resistance was identified to azithromycin (14.2%), tetracycline (10.4%), ampicillin (5.7%), amoxicillin–clavulanate and cefoxitin (3.8%), trimethoprim/sulfamethoxazole (1.9%), gentamicin and streptomycin (0.9%). No isolate was resistant to four or more antimicrobials, or to critically important antimicrobials such as fluoroquinolones and extended spectrum cephalosporins. This is the first study reporting AMR in Salmonella isolates from Australian rangeland goats. The rate of detection of AMR was very low, some resistance to low-importance drugs was present in the Salmonella population, despite the absence of active selection pressure.Khalid Al-HabsiDavid JordanAli HarbTanya LairdRongchang YangMark O’DeaCaroline JacobsonDavid W. MillerUna RyanSam AbrahamNature PortfolioarticleFecal CarriageSaintpaulompF GeneAntimicrobial Resistance (AMR)Azithromycin (AZI)MedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution DOAJ
collection DOAJ
language EN
topic Fecal Carriage
Saintpaul
ompF Gene
Antimicrobial Resistance (AMR)
Azithromycin (AZI)
Medicine
R
Science
Q
spellingShingle Fecal Carriage
Saintpaul
ompF Gene
Antimicrobial Resistance (AMR)
Azithromycin (AZI)
Medicine
R
Science
Q
Khalid Al-Habsi
David Jordan
Ali Harb
Tanya Laird
Rongchang Yang
Mark O’Dea
Caroline Jacobson
David W. Miller
Una Ryan
Sam Abraham
Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
description Abstract This study investigated faecal carriage and antimicrobial resistance (AMR) of Salmonella enterica recovered from rangeland goats. Faecal samples (n = 400) were collected at slaughter from four consignments of goats (n = 100 samples per consignment), each from one of four localities in Western Australia. Carriage of Salmonella spp. was detected in 106 samples (26.5%; 95% CI 22.4–31.0%). The rate of faecal carriage for each consignment ranged between 23–30%. PCR assays targeting the STM2755 and STM4497 genes revealed 84.9% (90/106) of the isolates were of serovar Typhimurium. Salmonella Chester (11/106, 10.4%) and S. Saintpaul (5/106, 4.7%) were characterised at invA and ompF genes. Antimicrobial susceptibility testing demonstrated that 84.0% of isolates were susceptible to all tested (n = 13) antimicrobials. Resistance was identified to azithromycin (14.2%), tetracycline (10.4%), ampicillin (5.7%), amoxicillin–clavulanate and cefoxitin (3.8%), trimethoprim/sulfamethoxazole (1.9%), gentamicin and streptomycin (0.9%). No isolate was resistant to four or more antimicrobials, or to critically important antimicrobials such as fluoroquinolones and extended spectrum cephalosporins. This is the first study reporting AMR in Salmonella isolates from Australian rangeland goats. The rate of detection of AMR was very low, some resistance to low-importance drugs was present in the Salmonella population, despite the absence of active selection pressure.
format article
author Khalid Al-Habsi
David Jordan
Ali Harb
Tanya Laird
Rongchang Yang
Mark O’Dea
Caroline Jacobson
David W. Miller
Una Ryan
Sam Abraham
author_facet Khalid Al-Habsi
David Jordan
Ali Harb
Tanya Laird
Rongchang Yang
Mark O’Dea
Caroline Jacobson
David W. Miller
Una Ryan
Sam Abraham
author_sort Khalid Al-Habsi
title Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
title_short Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
title_full Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
title_fullStr Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
title_full_unstemmed Salmonella enterica isolates from Western Australian rangeland goats remain susceptible to critically important antimicrobials
title_sort salmonella enterica isolates from western australian rangeland goats remain susceptible to critically important antimicrobials
publisher Nature Portfolio
publishDate 2018
url https://doaj.org/article/bbd198f968244d839af7cdfc8c20ded6
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