TABLE 4.
Trial 1 antimicrobial resistance patterns and isolation rates of E. coli and Salmonella serovar Newport
| Pen | Day | Resistance patterns (no. of isolates) ofa:
|
|
|---|---|---|---|
| E. coli | Serovar Newport | ||
| 1 | 1 | AMP-STR (6), AMP-CIP-NAL-(STR)-TET (5), KAN-NEO-SPT-STR-SUL-TET (2) | NIb |
| 4 | AMP-STR (1), AMP-CIP-NAL-(STR)-(SUL)-TET (15), KAN-NEO-SPT-STR-(SUL)-TET (2) | Susc.c (18) | |
| 10 | AMP-(AMC)-(CEF)-CIP-NAL-(NIT)-(STR)-TET (16), (AMP)-KAN-NEO-SPT-STR-SUL-TET (2) | Susc. (16), SPT-STR-SUL (2) | |
| 2 | 1 | AMP-STR (6), AMP-CIP-NAL-(STR)-TET (4), (AMP)-KAN-NEO-SPT-STR-SUL-TET (3) | NI |
| 4 | AMP-STR (4), AMP-CIP-NAL-STR-(TET) (10), KAN-NEO-SPT-STR-SUL-TET (4) | Susc. (18) | |
| 10 | AMP-STR (4), AMP-CIP-NAL-(STR)-TET (12), KAN-NEO-STR-SUL-TET (2) | Susc. (11), SPT-(STR)-SUL (6) | |
| 3 | 1 | AMP-STR (5), AMP-CIP-NAL-(STR)-TET (6), KAN-NEO-SUL-TET (2) | NI |
| 4 | AMP-STR (2), AMP-CIP-NAL-STR-TET (3), KAN-NEO-(STR)-SUL-TET (8), AMP-(AMC)-CEF-(CRO)-(CTF)-FOX-SPT-SUL (7) | Susc. (18), AMP-CEF-CRO-CTF-FOX-CHL-SPT-SUL (1) | |
| 10 | AMP-STR (2), AMP-CIP-NAL-(STR)-TET (3), KAN-NEO-(SPT)-(STR)-SUL-TET (6), AMP-(AMC)-CEF-CRO-(CTF)-FOX-SPT-SUL (8) | Susc. (11), AMP-(AMC)-CEF-(CRO)-(CTF)-FOX-CHL-SPT-SUL (8) | |
| 4 | 1 | AMP-STR (2), AMP-CIP-NAL-(STR)-TET (4), (AMP)-(GEN)-KAN-NEO-SPT-STR-SUL-TET (6) | NI |
| 4 | AMP-STR (2), AMP-CIP-NAL-(STR)-TET (9), (AMP)-(CIP)-KAN-(NAL)-NEO-(SPT)-STR-SUL-TET (7) | NI | |
| 10 | AMP-STR (1), AMP-CIP-NAL-(SPT)-STR-TET (8), (AMP)-KAN-NEO-SPT-STR-SUL-TET (8) | Susc. (1) | |
a
See Table 1 for abbreviations for antimicrobials. Isolates were considered resistant to CIP when growth occurred on MH agar containing 0.125 μg of CIP/ml. Antimicrobials shown in parentheses are those to which the isolates may or may not be additionally resistant.
b
NI, none isolated.
c
Susc., susceptible.