- Title
- Polymyxin resistant bacteria in Australian poultry
- Creator
- Bean, David; Wigmore, Sarah; Abdul Momin, Muhd; Wareham, David
- Date
- 2020
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/175206
- Identifier
- vital:14923
- Identifier
-
https://doi.org/10.3389/fsufs.2020.550318
- Identifier
- ISBN:2571-581X
- Abstract
- Resistance to last-resort antibiotics is significant public health issue. Antibiotic use in animal husbandry may be a driver of resistance that can subsequently be disseminated via the food chain. This study sought to determine the level of polymyxin resistance in Gram-negative pathogens present in Australian poultry, particularly the presence of mobilizable mechanisms of polymyxin resistance. Cloacal swabs from 213 birds were taken in a point prevalence survey from six different farms at a Victorian chicken processing facility. Colistin resistant organisms were recovered by direct plating on CHROMagar COL-APSE media. Bacterial isolates were identified and analyzed by MALDI-TOF, biochemical and genotypic assays. The 213 specimens yielded 57 (26.8%) colistin-resistant Gram-negative organisms, all of which have been previously described as exhibiting intrinsic resistance to polymyxin antibiotics. The most frequent organism was identified as Hafnia paralvei (40/57; 70%). Other colistin-resistant organisms included Aeromonas hydrophila (16%), Myroides odoratus (7%), Alcaligenes faecalis (5%), and Pseudochrobactrum spp. (2%). No mobile colistin resistance (mcr) genes were detected, although the arnA gene was identified in two A. hydrophila isolates and may mediate colistin resistance in these isolates. Intrinsic polymyxin-resistant organisms are widely distributed in the food chain, with over a quarter of the birds tested yielding a polymyxin-resistant organism. However, strains containing mcr genes remain rare in Australian poultry. © Copyright © 2020 Bean, Wigmore, Abdul Momin and Wareham.
- Publisher
- Frontiers Media S.A.
- Relation
- Frontiers in Sustainable Food Systems Vol. 4, no. (2020), p. 1-7
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- http://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © 2020 Bean, Wigmore, Abdul Momin and Wareham. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Published version
- Rights
- Open Access
- Subject
- Aeromonas; Antibiotics; Colistin; Hafnia paralvei; Polymyxin-resistance; Poultry; 07 Agricultural and Veterinary Sciences
- Full Text
- Reviewed
- Funder
- The assistance of the staff of the Victorian poultry processing plant with obtaining the poultry cloacal swabs was gratefully acknowledged. Thanks also to CHROMagar for the generous gift of CHROMagar COL-APSE culture media.
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