Reference | B9CMZS46 (54)

To isolate Enterococcus species, we analyzed a total of 343 raw chicken samples randomly purchased from the three largest retail chain stores in Davidson County, Tennessee. Stores were assigned identifying numbers and were randomly selected by using a random number generator (version 9.1, SAS Institute Inc., Cary, NC). In our study, all chicken labeled ‘‘antibiotics free’’ or ‘‘no antibiotics’’ or that had organic symbols were termed ‘‘organic.’’

The samples were designated as organic breast (n ~ 65), organic wings (n ~ 34), organic ground breast (n ~ 30), organic drumsticks (n ~ 74), conventional breast (n ~ 63), conventional wings (n ~ 26), conventional drumsticks (n ~ 20), and conventional ground chicken (n ~ 31). All organic and conventional chicken samples were collected from the same store at 7-day intervals to avoid duplicate sampling from the same consignment. Samples were chilled in an ice box during transport and were analyzed for Enterococcus spp. within 6 h.

AST Method: Broth Microdilution

Reference explicitly reports AST breakpoints: None

Reference reports using a MIC table: None