Table 3.
Results of E. coli resistance gene detection.
| Drug resistance gene | Detected number of farm I/strain | Detected number of farm II/strain | Detected number of farm III/strain | Total detected number/strain | Detected rate/% |
|---|---|---|---|---|---|
| blaCIT | 7 | 8 | 4 | 19 | 63.3 |
| blaTEM | 7 | 9 | 7 | 23 | 76.7 |
| blaDHA | 4 | 8 | 5 | 17 | 56.7 |
| floR | 6 | 8 | 9 | 23 | 76.7 |
| fexB | 6 | 4 | 4 | 14 | 46.7 |
| optrA | 10 | 9 | 6 | 25 | 83.3 |
| aphA1 | 5 | 4 | 5 | 14 | 46.7 |
| aac(3)-II | 0 | 2 | 0 | 2 | 0.7 |
| sul2 | 9 | 8 | 7 | 24 | 80 |
| tetM | 5 | 1 | 1 | 7 | 23.3 |
| tetC | 1 | 5 | 1 | 7 | 23.3 |
| ermB | 1 | 3 | 1 | 5 | 16.7 |
| oqxA | 10 | 10 | 8 | 28 | 93.3 |
| qnrS | 10 | 7 | 7 | 24 | 80 |
| mcr1 | 6 | 5 | 1 | 12 | 40 |
| mcr2 | 0 | 0 | 0 | 0 | 0 |