Reference | Boerlin_2001_JoofClMi (10251)

Ninety-six enterococcus isolates from fecal samples of pigs receiving tylosin as an antimicrobial growth promoter and 59 isolates obtained in the same farms 5 to 6 months after the ban of antimicrobial growth promoters in Switzerland were tested for susceptibility to nine antimicrobial agents. Samples from 16 farms that were still using tylosin as an AGP shortly before the AGP ban were investigated in a first step (farmers and feed producers were contacted to verify that tylosin was used regularly at this time). Samples from 13 of these farms were obtained and examined again 183 to 287 days later (median, 225 days). These samples were obtained 153 to 259 days (median, 161 days) after the final compulsory cessation of AGP use at the end of June 1999.

Two fresh fecal samples collected by the farmers on the same day in two different pens were sent immediately to the laboratory, mixed together in equal proportions, and inoculated on selective agar plates

AST Method: Disk Diffusion

Reference explicitly reports AST breakpoints: True

Reference reports using a MIC table: False