Table 3.
Antimicrobial Resistance of C. jejuni and C. coli Isolated from Raw Milk and Carcass Samples
| Source of isolate and number of resistance (%) | |||||||
|---|---|---|---|---|---|---|---|
| Milk | Carcass | ||||||
| Resistance profile | No. of resistant isolates (%) | C. jejuni | C. coli | Total | C. jejuni | C. coli | Total |
| Pan-susceptible | 1 (1.9) | 0 | 0 | 0 | 1 (7.1) | 0 | 1 (4.8) |
| ERY | 2 (3.7) | 0 | 0 | 0 | 2 (14.3) | 0 | 2 (9.5) |
| TET | 1 (1.9) | 0 | 1 (8.3) | 1 (3.0) | 0 | 0 | 0 |
| AMP | 3 (5.6) | 0 | 2 (16.7) | 2 (6.1) | 1 (7.1) | 0 | 1 (4.8) |
| AZM | 1 (1.9) | 0 | 1 (8.3) | 1 (3.0) | 0 | 0 | 0 |
| NAL | 4 (7.4) | 1 (4.0) | 3 (25.0) | 4 (12.1) | 0 | 0 | 0 |
| CIP/NAL | 1 (1.9) | 0 | 0 | 0 | 1 (7.1) | 0 | 1 (4.8) |
| ERY/AZM | 1 (1.9) | 0 | 0 | 0 | 0 | 1 (14.3) | 1 (4.8) |
| NAL/STR | 2 (3.7) | 0 | 0 | 0 | 1 (7.1) | 1 (14.3) | 2 (9.5) |
| AMP/NAL | 5 (9.3) | 2 (9.5) | 1 (8.3) | 3 (9.1) | 2 (14.3) | 0 | 2 (9.5) |
| AZM/STR | 1 (1.9) | 0 | 1 (8.3) | 1 (3.0) | 0 | 0 | 0 |
| AMP/CHL | 1 (1.9) | 1 (4.0) | 0 | 1 (3.0) | 0 | 0 | 0 |
| AMP/AZM | 2 (3.7) | 2 (9.5) | 0 | 2 (6.1) | 0 | 0 | 0 |
| AMP/STR | 1 (1.9) | 0 | 0 | 0 | 1 (7.1) | 0 | 1 (4.8) |
| CIP/AMP/NAL | 1 (1.9) | 0 | 0 | 0 | 0 | 1 (14.3) | 1 (4.8) |
| CIP/NAL/STR | 1 (1.9) | 0 | 0 | 0 | 0 | 1 (14.3) | 1 (4.8) |
| ERY/AZM/STR | 1 (1.9) | 0 | 0 | 0 | 0 | 1 (14.3) | 1 (4.8) |
| ERY/NAL/STR | 3 (5.6) | 2 (9.5) | 0 | 2 (6.1) | 1 (7.1) | 0 | 1 (4.8) |
| ERY/AZM/NAL | 1 (1.9) | 1 (4.0) | 0 | 1 (3.0) | 0 | 0 | 0 |
| ERY/TET/AMP | 1 (1.9) | 0 | 1 (8.3) | 1 (3.0) | 0 | 0 | 0 |
| ERY/AMP/AZM | 1 (1.9) | 1 (4.0) | 0 | 1 (3.0) | 0 | 0 | 0 |
| ERY/AMP/AZM/NAL | 7 (13.0) | 5 (23.8) | 1 (8.3) | 6 (18.2) | 0 | 1 (14.3) | 1 (4.8) |
| ERY/AMP/NAL/STR | 1 (1.9) | 0 | 0 | 0 | 0 | 1 (14.3) | 1 (4.8) |
| ERY/TET/AMP/AZM | 2 (3.7) | 2 (9.5) | 0 | 2 (6.1) | 0 | 0 | 0 |
| ERY/AZM/AMP/NAL/STR | 2 (3.7) | 1 (4.0) | 1 (8.3) | 2 (6.1) | 0 | 0 | 0 |
| ERY/AMP/AZM/CHL/NAL | 1 (1.9) | 0 | 1 (8.3) | 1 (3.0) | 0 | 0 | 0 |
| ERY/TET/AMP/AZM/NAL/STR | 4 (7.4) | 3 (14.3) | 0 | 3 (9.1) | 1 (7.1) | 0 | 1 (4.8) |
| CIP/ERY/AMP/AZM/CHL/NAL/STR | 2 (3.7) | 0 | 0 | 0 | 2 (14.3) | 0 | 2 (9.5) |
Antimicrobial resistance was determined using the disk-diffusion method. Results are shown as numbers of isolates with percentage given in parentheses.
AMP, ampicillin; AZM, azithromycin; CHL, chloramphenicol; CIP, ciprofloxacin; ERY, erythromycin; GEN, gentamicin; NAL, nalidixic acid; STR, streptomycin; TET, tetracycline.