TABLE 5.
All isolates included in the study
| Isolate ID (strain type)a | Origin | Resistance profileb | MIC (mg/liter) | Phylotypec |
|---|---|---|---|---|
| E. coli 1292(IncK) (D) | Retail chicken meat | Ctxr | >2 | D |
| E. coli 2798(IncI1) (D) | Retail chicken meat | Ctxr | >2 | A |
| E. coli 1553 (R) | Retail chicken meat | Nalr | 128 | ND |
| E. coli 6154 (R) | Retail chicken meat | Nalr | >128 | ND |
| E. coli 706 (R) | Retail chicken meat | Nalr | >128 | ND |
| E. coli 7079 (R) | Retail chicken meat | Nalr | 32 | ND |
| E. coli 3460-5 (R) | Fecal flora of healthy broiler | Nalr | >128 | ND |
| E. coli 6927-5 (R)d | Fecal flora of healthy broiler | Nalr | >128 | B1 |
| E. coli 1268 (R) | Fecal flora of healthy broiler | Nalr | 32 | B1 |
| E. coli 1450 (R) | Fecal flora of healthy broiler | Nalr | 64 | D |
| E. coli 1667 (R) | Fecal flora of healthy broiler | Nalr | 32 | D |
| E. coli 2362 (R) | Fecal flora of healthy broiler | Nalr | 64 | D |
| E. coli 4922 (R) | Fecal flora of healthy broiler | Nalr | 64 | D |
| E. coli 5792 (R) | Fecal flora of healthy broiler | Nalr | 128 | D |
| E. coli 3064-2 (R) | Fecal flora of healthy broiler | Nalr | 128 | A |
| E. coli 4064-1 (R) | Fecal flora of healthy broiler | Nalr | 128 | ND |
| S. marcescens 2336 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3297 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3298 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3299 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3300 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3301 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3302 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3303 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3304 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3305 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3306 (R)d | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3307 (R)d | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3308 (R) | Disinfecting footbath on dairy plant | Rifr | ≥16 | NA |
| S. marcescens 3309 (R) | Disinfecting footbath on dairy plant | Rifr | ≥100 | NA |
| Serratia sp. 3612 (R) | Slaughterhouse | Rifr | ≥16 | NA |
| Serratia liquefaciens 5676 (R) | Retail chicken meat | Rifr | ≥100 | NA |
| S. proteamaculans 5682 (R) | Retail chicken meat | Rifr | ≥16 | NA |
| S. proteamaculans 5685 (R)d | Retail chicken meat | Rifr | ≥100 | NA |
ID, identification; D, donor strain; R, recipient strain.
Ctxr, cefotaxime resistant; Nalr, nalidixic acid resistant; Rifr, rifampin resistant.
ND, not determined; NA, not applicable.
Isolates included in extended conjugation experiment.