Table 4 Number of resistant Lactobacillus strains determined on the basis of MIC breakpoints established for the antibiotics
From: Assessment of antibiotic susceptibility in Lactobacillus isolates from chickens
| Â | Number of strains | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Do not showing any resistance | Susceptible to one drug only | With multidrug resistancea | Displayed resistance against | |||||||||||
Ampicillin (MIC ≥2 or 4 or 8 μg/ml) | Tetracyclines (MIC ≥8 or 16 or 32 μg/ml) | Macrolides (MIC ≥2 μg/ml) | Lincomycin (MIC ≥16 μg/ml) | Streptomycin (MIC ≥32 or 128 μg/ml) | Gentamicin (MIC ≥16 or 32 μg/ml) | Chloramphenicol (MIC ≥8 μg/ml) | Tiamulin (MIC ≥8 μg/ml) | Enrofloxacin (MIC ≥64 μg/ml) | Macrolides and lincomycin | Streptomycin and gentamicin | ||||
L. salivarius (n = 31) | 0 (0%) | 2 (6%) | 27 (87%) | 4 (13%) | 23 (74%) | 18 (58%) | 22 (71%) | 16 (52%) | 6 (19%) | 16 (52%) | 29 (93.5%) | 18 (58%) | 18 (58%) | 4 (13%) |
L. agilis (n = 3) | 0 (0%) | 2 (67%) | 1 (33%) | 0 (0%) | 1 (33%) | 0 (0%) | 1 (33%) | 1 (33%) | 1 (33%) | 0 (0%) | 2 (67%) | 1 (33%) | 0 (0%) | 1 (33%) |
L. johnsoni (n = 21) | 0 (0%) | 3 (14%) | 16 (76%) | 6 (28%) | 14 (67%) | 10 (48%) | 14 (67%) | 3 (14%) | 0 (0%) | 2 (9.5%) | 21 (100%) | 10 (48%) | 10 (48%) | 0 (0%) |
L. crispatus (n = 12) | 0 (0%) | 0 (0%) | 10 (83%) | 8 (67%) | 9 (75%) | 3 (25%) | 8 (67%) | 2 (17%) | 2 (17%) | 1 (8%) | 12 (100%) | 11 (92%) | 3 (25%) | 1 (8.3%) |
L. reuteri (n = 10) | 0 (0%) | 0 (0%) | 9 (90%) | 5 (50%) | 9 (90%) | 4 (40%) | 10 (100%) | 2 (20%) | 0 (0%) | 1 (10%) | 7 (70%) | 1 (10%) | 4 (40%) | 0 (0%) |
L. ingluviei (n = 8) | 2 (25%) | 0 (0%) | 5 (62.5%) | 0 (0%) | 7 (87%) | 1 (12%) | 5 (62%) | 0 (0%) | 0 (0%) | 0 (0%) | 5 (62.5%) | 0 (0%) | 1 (12%) | 0 (0%) |
L. saerimneri (n = 3) | 0 (0%) | 0 (0%) | 2 (67%) | 0 (0%) | 2 (67%) | 1 (33%) | 2 (67%) | 3 (100%) | 2 (67%) | 0 (0%) | 3 (100%) | 1 (33%) | 1 (33%) | 2 (67%) |
Total: 88 | 2 (2%) | 7 (8%) | 70 (79.5%) | 23 (26%) | 65 (74%) | 37 (42%) | 62 (70%) | 27 (31%) | 11 (12.5%) | 20 (23%) | 79 (90%) | 42 (48%) | 37 (42%) | 8 (9%) |