Antimicrobial resistance profiles of <i>Escherichia coli</i> and prevalence of extended‐spectrum beta‐lactamase‐producing Enterobacteriaceae in calves from organic and conventional dairy farms in Switzerland

Nüesch‐Inderbinen, Magdalena; Hänni, Claudia; Zurfluh, Katrin; Hartnack, Sonja; Stephan, Roger

doi:10.1002/mbo3.1269

Cited by 10 publications

(2 citation statements)

References 41 publications

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“…AMR/AMS in CvsO. Ten studies on AMR/AMS strains of Escherichia coli (Sn106-Sn114, Sn132) 94,19,95–99,76,100,101 were retrieved. Six were conducted in the USA.…”

Section: Resultsmentioning

confidence: 99%

Do Organic, Conventional, and Intensive Approaches in Livestock Farming Have an Impact on the Circulation of Infectious Agents? A Systematic Review, Focused on Dairy Cattle

Pajoro,

Brilli,

Pezzali

et al. 2024

Preprint

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A common thought is that extensive and organic breeding systems are associated with lower prevalence of infections in livestock animals, compared to intensive ones. In addition, organic systems limit the use of antimicrobial drugs, which may lead to lower emergence of antimicrobial resistances (AMR). To examine these issues, avoiding any a priori bias, we carried out a systematic literature search on dairy cattle breeding. Search was targeted to publications that compared different types of livestock farming (intensive, extensive, conventional, organic) in terms of the circulation of infectious diseases and AMR. A total of 101 papers were finally selected. These papers did not show any trend in the circulation of the infections in the four types of breeding systems. However, AMR was more prevalent on conventional dairy farms compared to organic ones. The prevalence of specific pathogens and types of resistances were frequently associated with specific risk factors that were not strictly related to the type of farming system. In conclusion, we did not find any evidence suggesting that extensive and organic dairy farming bears any advantage over the intensive and conventional ones, in terms of the circulation of infectious agents.

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“…AMR/AMS in CvsO. Ten studies on AMR/AMS strains of Escherichia coli (Sn106-Sn114, Sn132) 94,19,95–99,76,100,101 were retrieved. Six were conducted in the USA.…”

Section: Resultsmentioning

confidence: 99%

Do Organic, Conventional, and Intensive Approaches in Livestock Farming Have an Impact on the Circulation of Infectious Agents? A Systematic Review, Focused on Dairy Cattle

Pajoro,

Brilli,

Pezzali

et al. 2024

Preprint

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“…Antimicrobial resistance and virulence types in E. coli have been investigated on fecal or manure samples of dairy cattle in a variety of countries, including Egypt [12], Canada [13], USA [14], and Switzerland [15].…”

Section: Introductionmentioning

confidence: 99%

Detection and Molecular Characterization of Shiga-toxin-producing Escherichia coli from Fecal Samples of Cattle Farms Al-Buḥayrah Governorate Egypt

Elsayed,

Abutabeikh

2024

JAMB

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Escherichia coli that produce the Shiga toxin (STEC) has become one of the most significant foodborne pathogens linked to serious illnesses. Our study was aimed to detect the existence, antimicrobial profiles, and virulence repertoire of different STEC serotypes from fecal samples of dairy cattle. We collected 19 fecal samples (12 diarrheic and 7 non-diarrheic) from dairy cattle. E. coli isolation and identification were performed. Shiga toxins genes were detected and the antimicrobial resistance was investigated. E. coli was detected at the rate of 13/19 (68.4%) from the fecal samples. The frequency of Stx2a represented 12/13 (92.3%), Stx2 represented 3/13 (23.14%), and Stx1d, Stx2f, Stx2g, and eae represented 2/13 (15.4%). While the virulence genes Stx1, Stx1c, Stx2c, Stx2d, Stx2e, and ehxA represented 0/13 (0%). The most effective antimicrobials were tulathithromycin 30 (53.84%) followed by ceftiofur 30 and marbofloxacin (46.16%), amikacin (15.38%), and the least resistance was recorded for nalidixic acid and oxytetracycline (7.70%). The resistant antibiotics with percentages reached to 100% were Amoxicillin/ Clavulanic acid, Ceftriaxone, Ciprofloxacin, Doxycycline, Erythromycin, Gentamicin, Ninezolid, Nitrofurantoin, Penicillin G, Streptomycin, and Trimethoprim/Sulfamethoxazole, followed by chloramphenicol, nalidixic acid, oxytetracycline, and Tylosine (92.30%), Amikacin and Ampicillin (84.62%), Ceftiofur (23.07%), Marbofloxacin (15.38%) and Tulathithromycin 30 (7.70%). The findings demonstrated that E. coli that are resistant to numerous groups of antimicrobials spread through feces and may pose a risk to human and animal health.

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Antimicrobial resistance profiles of Escherichia coli and prevalence of extended‐spectrum beta‐lactamase‐producing Enterobacteriaceae in calves from organic and conventional dairy farms in Switzerland

et al. 2022

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This study compared the antimicrobial resistance (AMR) among commensal Escherichia coli in the fecal microbiota of young calves raised on organic and on conventional dairy farms in Switzerland. Further, fecal carriage of extended‐spectrum beta‐lactamase (ESBL) producing Enterobacteriaceae was assessed for calves from both farming systems. Where possible, data on antimicrobial usage (AMU) were obtained. Antimicrobial susceptibility testing was performed on a total of 71 isolates using the disk diffusion method. ESBL producers were characterized by polymerase chain reaction‐based multilocus sequence typing and sequencing of the bla ESBL genes. Organically raised calves were significantly more likely to harbor E. coli that showed AMR to ampicillin (odds ratio [OR]: 2.78, 95% confidence interval [CI]: 1.02–7.61, p = 0.046), streptomycin (OR: 3.22, 95% CI: 1.17–8.92, p = 0.046), kanamycin (OR: 11.3, 95% CI: 2.94–43.50, p < 0.001), and tetracycline (OR: 3.25, 95% CI: 1.13–9.31, p = 0.028). Calves with reported AMU were significantly more likely to harbor E. coli with resistance to ampicillin (OR: 3.91, 95% CI: 1.03–14.85, p = 0.045), streptomycin (OR: 4.35, 95% CI: 1.13–16.7, p = 0.045), and kanamycin (OR: 8.69, 95% CI: 2.01–37.7, p = 0.004). ESBL‐producing Enterobacteriaceae (18 E. coli and 3 Citrobacter braakii) were detected exclusively among samples from conventionally farmed calves (OR: infinity [∞], 95% CI: 2.3–∞, p < 0.0013). The observations from this study suggest that AMR is highly prevalent among commensal E. coli in young dairy calves, irrespective of the farm management system, with proportions of certain resistance phenotypes higher among organic calves. By contrast, the occurrence of ESBL producers among young dairy calves may be linked to factors associated with conventional farming.

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Antimicrobial resistance profiles of Escherichia coli and prevalence of extended‐spectrum beta‐lactamase‐producing Enterobacteriaceae in calves from organic and conventional dairy farms in Switzerland

Cited by 10 publications

References 41 publications

Do Organic, Conventional, and Intensive Approaches in Livestock Farming Have an Impact on the Circulation of Infectious Agents? A Systematic Review, Focused on Dairy Cattle

Do Organic, Conventional, and Intensive Approaches in Livestock Farming Have an Impact on the Circulation of Infectious Agents? A Systematic Review, Focused on Dairy Cattle

Detection and Molecular Characterization of Shiga-toxin-producing Escherichia coli from Fecal Samples of Cattle Farms Al-Buḥayrah Governorate Egypt

Antimicrobial resistance profiles of Escherichia coli and prevalence of extended‐spectrum beta‐lactamase‐producing Enterobacteriaceae in calves from organic and conventional dairy farms in Switzerland

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