Table 6.
Antimicrobial resistance patterns of Salmonella Gallinarum isolated from the layer flocks.
| Resistance Against Antimicrobials | Resistance Patterns | Salmonella Gallinarum Isolates (n = 197) | |
|---|---|---|---|
| No. (%) of Strains | Subtotal (No. (%)) |
||
| Against one to two antimicrobial agents | |||
| Against one | OT | 15 (7.6) | 39 (19.9) |
| SXT | 9 (4.6) | ||
| AMX | 7 (3.6) | ||
| DO | 8 (4.1) | ||
| Against two | OT, SXT | 9 (4.6) | 27 (13.7) |
| OT, AMX | 18 (9.1) | ||
| Against three or more antimicrobial agents (multidrug resistance) | |||
| Against three | CIP, DO, AZM | 19 (9.6) | 42 (21.3) |
| OT, CN, AMX | 23 (11.7) | ||
| Against four | ENR, OT, SXT, AMX | 16 (8.1) | 16 (8.1) |
| Against five | N, DO, SXT, AZM, AMX | 19 (9.6) | 35 (17.7) |
| GEN, LEV, OT, SXT, AMX | 16 (8.1) | ||
| Against six | CN, N, ENR, DO, SXT, AMX | 17 (8.6) | 38 (19.3) |
| N, LEV, AZM, OT, SXT, AMX | 21 (10.7) | ||
| Against three or more antimicrobials | 131 (66.5) | ||
N: Neomycin; GEN: Gentamicin; ENR: Enrofloxacin; CIP: Ciprofloxacin; LEV: Levofloxacin; DO: Doxycycline; OT: Oxytetracycline; SXT: Sulfamethoxazole; AZM: Azithromycin, and AMX: Amoxicillin.