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Differences in Genotype and Antimicrobial Resistance between Campylobacter spp. Isolated from Organic and Conventionally Produced Chickens in Sweden

Hansson, Ingrid and Ellstrom, Patrik and Nilsson, Oskar and Chaba, Matilda and Skarin, Moa and Fernström, Lise-Lotte and Frosth, Sara (2021). Differences in Genotype and Antimicrobial Resistance between Campylobacter spp. Isolated from Organic and Conventionally Produced Chickens in Sweden. Pathogens. 10 , 1630
[Research article]

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Abstract

Antibiotic resistance is a major challenge worldwide and increased resistance to quinolones in Campylobacter is being reported. Analysis of antibiotic resistance was performed on 157 Campylobacter strains (123 C. jejuni and 34 C. coli) from conventional and organic chickens produced in Sweden. Susceptibility for tetracycline, ciprofloxacin, erythromycin, nalidixic acid, streptomycin, and gentamycin was determined by microdilution. All 77 isolates from organic chickens were sensitive to all antibiotics, except two C. jejuni that were resistant to tetracycline. Of the 80 isolates from conventional chickens, 22.5% of C. jejuni and 11.1% of C. coli were resistant to quinolones and 5.6% of C. jejuni were resistant to tetracycline. Whole-genome sequencing resulted in 50 different sequence types of C. jejuni and six of C. coli. Nine sequence types were found in both organic and conventional chickens. Two of these (ST-19 and ST-257) included isolates from conventional broilers with different resistance phenotypes to the remaining isolates from conventional and organic broilers. There are management differences between the production systems, such as feed, breed, use of coccidiostats, and access to outdoor area. It is unlikely that quinolone resistance has arisen due to use of antimicrobials, since fluoroquinolones are not permitted in Swedish broiler production.

Authors/Creators:Hansson, Ingrid and Ellstrom, Patrik and Nilsson, Oskar and Chaba, Matilda and Skarin, Moa and Fernström, Lise-Lotte and Frosth, Sara
Title:Differences in Genotype and Antimicrobial Resistance between Campylobacter spp. Isolated from Organic and Conventionally Produced Chickens in Sweden
Series Name/Journal:Pathogens
Year of publishing :2021
Volume:10
Article number:1630
Number of Pages:14
Publisher:MDPI
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Pathobiology
Keywords:antimicrobial resistance, broiler, Campylobacter jejuni, Campylobacter coli, organic, cgMLST, chicken, quinolones, whole-genome sequencing
URN:NBN:urn:nbn:se:slu:epsilon-p-115718
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115718
Additional ID:
Type of IDID
DOI10.3390/pathogens10121630
Web of Science (WoS)000737055900001
ID Code:26811
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Department of Biomedical Science and Veterinary Public Health
Deposited By: SLUpub Connector
Deposited On:24 Jan 2022 12:25
Metadata Last Modified:24 Jan 2022 12:31

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