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Table 2 Antimicrobial susceptibility of Salmonella from food-producing animals

From: National surveillance of Salmonella enterica in food-producing animals in Japan

Antimicrobials Resistant breakpoint (μg/mL) MIC range (μg/mL) MIC50 (μg/mL) MIC90 (μg/mL) No. of resistant isolates (%)
      Broiler
(n = 111)
Pigs
(n = 10)
Cattle
(n = 1)
Total
(n = 122)
Ampicillin 25 0.39->100 1.56 3.13 4 (3.6) 5 (50) 0 (0) 9 (7.4)
Ceftiofur 6.25 0.2–25 0.78 1.56 2 (1.8) 0 (0) 0 (0) 2 (1.6)
Apramycin   0.39–12.5 1.56 3.13         
Dihydrostreptomycin 100 6.25->100 >100 >100 88 (79.3) 6 (60) 1 (100) 95 (77.9)
Kanamycin 25 0.39->100 1.56 >100 49 (44.1) 0 (0) 1 (100) 50 (41.0)
Gentamicin   0.1–3.13 0.39 0.78         
Oxytetracycline 25 3.13->100 >100 >100 93 (83.8) 6 (60) 1 (100) 100 (82.0)
Bicozamycin 100 12.5->400 25 25 8 (7.2) 0 (0) 0 (0) 8 (6.6)
Chloramphenicol 50 0.78->100 3.13 6.25 0 (0) 4 (40) 0 (0) 4 (3.3)
Colistin   0.39–3.13 0.78 1.56         
Nalidixic acid 25 3.13->100 3.13 6.25 6 (5.4) 0 (0) 0 (0) 6 (4.9)
Enrofloxacin   ≤0.05–0.39 ≤0.05 0.1         
Ofloxacin   ≤0.05–0.78 0.1 0.2         
Trimethoprim 3.13 0.1–6.25 0.39 6.25 42 (37.8) 1 (10) 0 (0) 43 (35.2)
Sulfadimethoxine   100->1600 >1600 >1600