Reference | Gonggrijp2016 (10198)

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


Gonggrijp, M. A.; Santman-Berends, I. M. G. A.; Heuvelink, A. E.; Buter, G. J.; van Schaik, G.; Hage, J. J.; Lam, T. J. G. M. (Netherlands)

Journal of Dairy Science (2016)

Reference


For the cross-sectional study that was conducted between September and December 2011, 500 herds were randomly selected from all dairy farms in the Netherlands with a conventional (nonorganic) farming system. Conventional and organic herds were distinguished based on information of the identification and registration system . All 500 farmers were contacted by mail with the request to participate in our study and the first 100 farmers that responded and agreed were included.

During the first herd visit, one slurry sample was collected by using transport swabs with Amies medium . When a floor scraper was present on the farm, the scraper was swabbed at different places. When no floor scraper was present, manure samples from 5 randomly selected places on the slatted floor were thoroughly mixed and sampled by using the transport swab.

AST Method: None

Reference explicitly reports AST breakpoints: True

Reference reports using a MIC table: False

Is Excluded: False

Country Sub-Region Sub-Region Detail
Netherlands None None
ID Note Resolution

Factors


Title Host Host Production Stage Description ROs
Treatments Cattle Dairy Cows Farm Administration of minerals to young stock 1
Clinical illness Cattle Dairy Cows Farm Presence of clinical mastitis during dry period 1
Antimicrobial use Cattle Dairy Cows Farm Clinical mastitis cases treated with antimicrobials 1
Presence of other animals on farm Cattle Dairy Cows Farm Presence of goats on farm 1
Floor type in freestall barn Cattle Dairy Cows Farm slated floor vs. solid floor 1
Antimicrobial Use Cattle Dairy Cows Farm The use of third- and fourth-generation cephalosporins on farm 1
Treatments Cattle Dairy Cows Farm Internal teat sealants are used for dry cow therapy 1
Milking Cattle Dairy Cows Farm Stripping before milking 1
Treatments Cattle Dairy Cows Farm Administration of minerals to dry cows 1
Presence of other animals on farm Cattle Dairy Cows Farm Presence of sheep on the farm 1