Table 5.
Antibiotic resistance gene prevalence of C. perfringens isolates (β-lactamase resistant isolates= 160; quinolones resistant isolates= 98) recovered from broiler chickens affected by necrotic enteritis
| Resistant genes | Number of isolates (%) | 95% CI | χ2 value | P-value | |
|---|---|---|---|---|---|
| β-lactamase | bla TEM | 22 (13.75) | 8.82-20.07 | 54.6 | 0.001 |
| bla SHV | 17 (10.62) | 6.31-16.47 | |||
| bla OXA | 25 (15.63) | 10.37-22.20 | |||
| Sub-total | 64/160 (40.00) | 32.35-48.03 | |||
| Quinolone | qnrA | 0 | - | 35.03 | 0.001 |
| qnrB | 18 (18.37) | 11.26-27.47 | |||
| qnrS | 10 (10.20) | 5.00-17.97 | |||
| Sub-total | 28/98 (28.57) | 19.90-38.58 | |||