Reference | Varga2009a (10126)

10.1016/j.prevetmed.2008.10.002

Associations between reported on-farm antimicrobial use practices and observed antimicrobial resistance in generic fecal Escherichia coli isolated from Alberta finishing swine farms.

Varga, Csaba; Rajic, Andrijana; McFall, Margaret E.; Reid-Smith, Richard J.; Deckert, Anne E.; Checkley, Sylvia L.; McEwen, Scott A. (Canada)

Preventive Veterinary Medicine (2009)

Reference

A cross-sectional study was conducted using pen-level pooled fecal samples. 90 farms that each produced at least2000 pigs annually were selected by 10 practitioners fromtheir client list, based on producers' willingness toparticipate in the study. Farms were visited three times between May andSeptember 2000, at 4-6-week intervals. At every visit five pens were randomly selectedand from each pen a pool of 25 g of fresh fecal material wascollected (5 g of feces each from five different spots withinthe pen), for a total of 15 pooled samples per farm. At the second farm visit, a ques-tionnaire was administered to producers by the farmveterinarian in order to determine general and specific AMU practices through feed, water and injection in variousphases of swine production on studied farms during theprevious 12 months.

At every visit five pens were randomly selectedand from each pen a pool of 25 g of fresh fecal material wascollected (5 g of feces each from five different spots withinthe pen), for a total of 15 pooled samples per farm.

AST Method: Broth Microdilution

Reference explicitly reports AST breakpoints: True

Reference reports using a MIC table: False

Is Excluded: False

Country Sub-Region Sub-Region Detail
Canada Alberta (Province) None
ID Note Resolution

Factors

Title Host Host Production Stage Description ROs
Antimicrobial use Swine Grower-finisher Farm Use of any antimicrobial through water in growers 1
Oxytetracycline use Swine Grower-finisher Farm Oxytetracycline use through injections in growers 1
Chlortetracycline use Swine Grower-finisher Farm In-feed chlortetracycline use in growers 2
Tylosin use Swine Grower-finisher Farm Tylosin use through injections in growers 2
Oxytetracycline use Swine Grower-finisher Farm Oxytetracycline use in-feed in growers 1
Chlortetracycline-sulfamethazine-penicillin use Swine Grower-finisher Farm In-feed chlortetracycline-sulfamethazine-penicillin use in weaners 2
Trimethoprim-sulfamethoxazole use Swine Grower-finisher Farm Trimethoprim-sulfamethoxazole use through injections in weaners 5
Antimicrobial use Swine Grower-finisher Farm In-feed use of any antimicrobial use in finishers 4