Reference | Edrington2009 (10168)

This research was conducted during the summer months on two large commercial dairies (>2000 head each) in the southwestern United States. Both dairies are located within a small geographical region (approx. 25 km) and managed similarly. Lactating cows are maintained in large dry‐lot pens with shade provided. Pens of lactating cattle on each farm were randomly assigned to treatment: control (no sprinklers) or treated (sprinklers). Sprinklers were applied to lactating dairy cattle on two farms at either the feedbunk or in the holding pen prior to milking. Faecal samples were collected approx. 1 and 4 weeks following initiation of sprinkler treatments for culture of E. coli O157:H7, Salmonella and Enterococcus.

Faecal samples were collected from the pens of lactating cattle on two separate occasions, approx. 1 and 4 weeks after initiation of the sprinkler treatments. Approximately 200 g of faeces was collected from fresh, undisturbed faecal pats from the pen floors using sterile palpation sleeves.

AST Method: Broth Microdilution

Reference explicitly reports AST breakpoints: True

Reference reports using a MIC table: True