53 Prevalence and risk factors for extended-spectrum β-lactamase- and AmpC-producing Escherichia coli in dairy farms

Significant Impact Group(s): AMU reduction strategies \ Legislation and incentives
Species targeted: Dairy;
Age: Adult;
Outcome Parameter(s): herd-level prevalence of ESBL- and AmpC-producing E. coli
Summary: This study estimated the herd-level prevalence of antimicrobial resistant bacteria, specifically ESBL- and AmpC-producing E. coli among Dutch dairy farms. No association was found between the total AMU and the ESBL/AmpC herd status. The use of third- and fourth-generation cephalosporins, however, was associated with an increased odds of having a positive ESBL/AmpC herd status and seems important in reducing ESBL/AmpC. Four other management factors were also found to be associated with the ESBL/AmpC status of dairy herds: treatment of all cases of clinical mastitis with antimicrobials, a higher proportion of calves treated with antimicrobials, not applying teat sealants in all cows at dry off, and the use of a floor scraper (which is probably not a true risk factor). Also ESBL/AmpC could frequently be cultured from slurry samples collected from Dutch dairy farms.
53 Research paper – Gonggrijp – 2016 – Prevalence and risk factors for extended-spectrum b-lactamase- and AmpC-producing Escherichia coli in dairy
Where to find the original material:
https://www.sciencedirect.com/science/article/pii/S0022030216306257; https://doi.org/10.3168/jds.2016-11134
Country: NL

53 Research paper – Gonggrijp – 2016 – Prevalence and risk factors for extended-spectrum b-lactamase- and AmpC-producing Escherichia coli in dairy