Table 3.
Antimicrobial resistance of C. jejuni and C. coli isolated from pig, dairy, and beef cattle samples.
| Resistance profilea | Resistant isolates | Source of isolate and number of resistant isolates (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Pig | Dairy cattle | Beef cattle | |||||||
| Number (%) | C. jejuni (n = 42) | C. coli (n = 69) | C. jejuni (n = 2) | C. coli (n = 67) | C. jejuni (n = 26) | C. coli (n = 1) | C. jejuni (n = 14) | C. coli (n = 1) | |
| Pan-susceptible | 6 (5.4) | 6(14.3) | 0 | 0 | 0 | 3 (11.5) | 0 | 3 (21.4) | 0 |
| Gen | 1 (0.9) | 1(2.4) | 0 | 0 | 0 | 1 (3.9) | 0 | 0 | 0 |
| Ery | 1 (0.9) | 1(2.4) | 0 | 0 | 0 | 0 | 0 | 1 (7.1) | 0 |
| Str | 2 (1.8) | 2(4.8) | 0 | 0 | 0 | 0 | 0 | 2 (14.3) | 0 |
| Gen/Str | 2 (1.8) | 2(4.8) | 0 | 0 | 0 | 2 (7.7) | 0 | 0 | 0 |
| Gen/Tyl | 1 (0.9) | 1(2.4) | 0 | 0 | 0 | 1 (3.9) | 0 | 0 | 0 |
| Amp/Tyl | 4 (3.6) | 4(9.5) | 0 | 0 | 0 | 1 (3.9) | 0 | 3 (21.4) | 0 |
| Ery/Str | 5 (4.5) | 2(4.8) | 3(4.4) | 0 | 3 (4.8) | 1 (3.9) | 0 | 1 (7.1) | 0 |
| Amp/Tet | 3 (2.7) | 1(2.4) | 2(2.9) | 0 | 2 (3.0) | 0 | 0 | 1 (7.1) | 0 |
| Str/Tyl | 2 (1.8) | 1(2.4) | 1(1.5) | 0 | 1 (1.5) | 1 (3.9) | 0 | 0 | 0 |
| Cip/Tyl | 1 (0.9) | 1(2.4) | 0 | 0 | 0 | 1 (3.9) | 0 | 0 | 0 |
| Tet/Str | 2 (1.8) | 2(4.8) | 0 | 0 | 0 | 2 (7.7) | 0 | 0 | 0 |
| Amp/Str | 11 (9.9) | 2(4.8) | 9(13.0) | 2 (100.0) | 9 (13.4) | 0 | 0 | 0 | 0 |
| Amp/Ery | 5 (4.5) | 0 | 5(7.3) | 0 | 5 (7.5) | 0 | 0 | 0 | 0 |
| Gen/Amp/Tyl | 3 (2.7) | 3(7.1) | 0 | 0 | 0 | 1 (3.9) | 0 | 2 (14.3) | 0 |
| Amp/Str/Tyl | 7 (6.3) | 3(7.1) | 4(5.8) | 0 | 4 (6.0) | 2 (7.7) | 0 | 1 (7.1) | 0 |
| Ery/Str/Tyl | 2 (1.8) | 1(2.4) | 1(1.5) | 0 | 0 | 1 (3.9) | 0 | 0 | 1 (100) |
| Amp/Ery/Str | 15 (13.5) | 4(9.5) | 11(15.9) | 0 | 11 (16.4) | 4 (15.4) | 0 | 0 | 0 |
| Gen/Amp/Str | 2 (1.8) | 1(2.4) | 1(1.5) | 0 | 1 (1.5) | 1 (3.9) | 0 | 0 | 0 |
| Amp/Tyl/Tet | 3 (2.7) | 0 | 3(4.4) | 0 | 3 (4.8) | 0 | 0 | 0 | 0 |
| Amp/Str/Tet | 2 (1.8) | 0 | 2(2.9) | 0 | 2 (3.0) | 0 | 0 | 0 | 0 |
| Gen/Amp/Str/Tyl | 3 (2.7) | 3(7.1) | 0 | 0 | 0 | 3 (11.5) | 0 | 0 | 0 |
| Amp/Ery/Str/Tyl | 12 (10.8) | 0 | 12(17.4) | 0 | 12 (17.9) | 0 | 0 | 0 | 0 |
| Cip/Amp/Ery/Str | 4 (3.6) | 0 | 4(5.8) | 0 | 4 (6.0) | 0 | 0 | 0 | 0 |
| Amp/Ery/Str/Tet | 4 (3.6) | 0 | 4(5.8) | 0 | 3 (4.8) | 0 | 1 (100) | 0 | 0 |
| Ery/Str/Tet/Tyl | 2 (1.8) | 0 | 2(2.9) | 0 | 2 (3.0) | 0 | 0 | 0 | 0 |
| Amp/Ery/Str/Tet/Tyl | 1 (0.9) | 0 | 1(1.5) | 0 | 1 (1.5) | 0 | 0 | 0 | 0 |
| Cip/Amp/Ery/Str/Tet | 3 (92.7) | 0 | 3(4.4) | 0 | 3 (4.8) | 0 | 0 | 0 | 0 |
| Gen/Amp/Str/Tet/Tyl | 2 (1.8) | 1(2.4) | 1(1.5) | 0 | 1 (1.5) | 1 (3.9) | 0 | 0 | 0 |
The antimicrobial resistance was determined using the broth microdilution method. Results are shown as number of isolates with percentage given in parentheses.
a
Amp, ampicillin; Cip, ciprofloxacin; Ery, erythromycin; Gen, gentamicin; Str, streptomycin; Tet, tetracycline; Tyl, tylosin.