Table 2 Amino acid substitutions in gyrA and parC and antimicrobial resistance profiles in 51 Salmonella isolates from poultry slaughterhouses by nalidixic acid resistance
Resistance pattern of nalidixic acid | Serovars (No. of isolates ) | Amino acid substitution in* | MICs‡(mg/l) | Antimicrobial resistance profiles§ | ||
|---|---|---|---|---|---|---|
GyrA | ParC | Na | Cip | |||
Resistant | Enteritis (18) | D87G | WT†| 512 | 0.25 | AmCSTe (1), AmS (2), STe (1) |
512 | 0.5 | AmCfS (2), AmS (2) | ||||
D87Y | WT | >512 | 0.5 | - (8) | ||
D87N | WT | >512 | 0.5 | AmCfCzGmKCazCtxFepSTe (1), - (1) | ||
Montevideo (5) | D87G | WT | >512 | 0.25 | - (2) | |
512 | 0.25 | - (3) | ||||
Senftenberg (2) | D87N | WT | 512 | 0.5 | - (1) | |
D87G | WT | 512 | 0.25 | - (1) | ||
Newport (2) | D87Y | WT | 512 | 0.5 | - (1) | |
>512 | 0.5 | - (1) | ||||
Susceptible | Typhimurium (8) | WT | WT | 8 | <0.0625 | - (6) |
8 | 0.25 | - (1) | ||||
16 | <0.0625 | STe (1) | ||||
Montevideo (4) | WT | WT | 4 | <0.0625 | GmK (2), - (2) | |
Hadar (5) | WT | WT | 4 | <0.0625 | AmCfCzSTe (1) | |
8 | <0.0625 | AmCfCzKSTe (1), STe (2), KS (1) | ||||
Ohio (3) | WT | WT | 4 | <0.0625 | STe (1), - (2) | |
London (3) | WT | WT | 4 | <0.0625 | AmCfSTe (1) | |
8 | <0.0625 | - (2) | ||||
| Â | Hogton (1) | WT | WT | 8 | <0.0625 | KSTe (1) |