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Table 4 Number of resistant Lactobacillus strains determined on the basis of MIC breakpoints established for the antibiotics

From: Identification and antibiotic susceptibility of lactobacilli isolated from turkeys

  Number of strains
  do not showing any resistance resistant to one drug only with multidrug resistancea displayed resistance against
ampicillin (MIC≥2 or 4 or 8 μg/ml) tetracycline (MIC≥8 or 16 or 32 μg/ml) erythromycin (MIC≥2 μg/ml) lincomycin (MIC≥64 μg/ml) streptomycin (MIC≥32 or 128 μg/ml) gentamycin (MIC≥32 μg/ml) chloramphenicol (MIC≥8 μg/ml) enrofloxacin (MIC≥64 μg/ml) erythromycin and lincomycin streptomycin and gentamycin
L. salivarius
(n=22)
0 2
(9%)
15
(68%)
10
(45%)
13
(59%)
9
(41%)
14
(64%)
11
(50%)
1
(4.5%)
9
(41%)
20
(91%)
9
(41%)
1
(4.5%)
L. agilis
(n=2)
0 0 2
(100%)
0 2
(100%)
1
(50%)
1
(50%)
2
(100%)
0 0 1
(50%)
1
(50%)
0
L. saerimneri
(n=3)
0 0 1
(67%)
3
(100%)
0 0 0 3
(100%)
3
(100%)
1
(33%)
0 0 3
(100%)
L. johnsoni
(n=6)
0 1
(17%)
3
(50%)
1
(17%)
5
(83%)
2
(33%)
5
(83%)
0 0 1
(17%)
2
(33%)
1
(17%)
0
L. crispatus
(n=13)
0 0 10
(77%)
9
(69%)
11
(85%)
7
(54%)
8
(61.5%)
3
(23%)
2
(15%)
1
(8%)
13
(100%)
7
(38%)
0
L. oris
(n=5)
0 1
(20%)
4
(80%)
4
(80%)
4
(80%)
4
(80%)
5
(100%)
0 0 1
(20%)
1
(20%)
4
(80%)
0
L. ingluviei
(n=9)
3
(33%)
0 5
(55.5%)
2
(22%)
6
(67%)
5
(55.5%)
5
(55.5%)
0 0 5
(55.5%)
0 5
(55.5%)
0
L. reuteri
(n=2)
0 1
(50%)
0 0 1
(50%)
0 2
(100%)
0 0 0 0 0 0
Total: 62 3
(5%)
5
(8%)
40
(64.5%)
29
(47%)
42
(68%)
28
(45%)
40
(64.5%)
19
(31%)
6
(10%)
18
(29%)
37
(60%)
27
(43.5%)
4
(6%)
  1. aresistant to at least 3 groups of antimicrobial agents (the analysis excluded tiamulin, cephalothin, cefuroxime and ceftiofur for which the breakpoints has not been established)