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Differences in Geno...
Differences in Genotype and Antimicrobial Resistance between Campylobacter spp. Isolated from Organic and Conventionally Produced Chickens in Sweden
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- Hansson, Ingrid (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health,Swedish Univ Agr Sci, Dept Biomed Sci & Vet Publ Hlth, POB 7036, SE-75007 Uppsala, Sweden.
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- Ellström, Patrik (author)
- Uppsala universitet,Infektionsmedicin
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- Nilsson, Oskar (author)
- Natl Vet Inst SVA, Dept Anim Hlth & Antimicrobial Strategies, SE-75189 Uppsala, Sweden.
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- Chaba, Matilda (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health,Swedish Univ Agr Sci, Dept Biomed Sci & Vet Publ Hlth, POB 7036, SE-75007 Uppsala, Sweden.
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- Skarin, Moa (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health,Swedish Univ Agr Sci, Dept Biomed Sci & Vet Publ Hlth, POB 7036, SE-75007 Uppsala, Sweden.
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- Fernström, Lise-Lotte (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health,Swedish Univ Agr Sci, Dept Biomed Sci & Vet Publ Hlth, POB 7036, SE-75007 Uppsala, Sweden.
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- Frosth, Sara (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Inst för biomedicin och veterinär folkhälsovetenskap,Department of Biomedical Science and Veterinary Public Health,Swedish Univ Agr Sci, Dept Biomed Sci & Vet Publ Hlth, POB 7036, SE-75007 Uppsala, Sweden.
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(creator_code:org_t)
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- 2021-12-16
- 2021
- English.
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In: Pathogens. - : MDPI. - 2076-0817. ; 10:12
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
- LANTBRUKSVETENSKAPER -- Veterinärmedicin -- Patobiologi (hsv//swe)
- AGRICULTURAL SCIENCES -- Veterinary Science -- Pathobiology (hsv//eng)
Keyword
- antimicrobial resistance
- broiler
- Campylobacter jejuni
- Campylobacter coli
- organic
- cgMLST
- chicken
- quinolones
- whole-genome sequencing
Publication and Content Type
- ref (subject category)
- art (subject category)
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