Antibiotic sensitivity of 15 Actinobacillus pleuropneumoniae strains isolated from pathologic cases of haemorrhagic necrotic pneumonia and fibrinous pleuritis of swine in Hungary between 2006 and 2012 was examined in the disk diffusion method with 20 antibiotics and antibiotic combinations. The strains showed sensitivity to a wide range of antibiotics. When the sensitivity of 30 freshly isolated A. pleuropneumoniae strains to five frequently used antibiotics was examined in the disk diffusion test, the majority of the strains proved to be sensitive to ceftiofur, enrofloxacin, penicillin G and tiamulin, however some strains with moderate sensitivity to ceftiofur or enrofloxacin were also found together with one enrofloxacin and two penicillin resistant ones. About one third of each strains was sensitive, moderately sensitive to and resistant to oxytetracycline. The antibiotics had wide ranges of minimum inhibitory concentrations, on the basis of them all strains were susceptible to ceftiofur, 26 (86.7%) to enrofloxacin and 19 (63.3%) to tiamulin. A total of 16 (53.3%) of the strains were only moderately sensitive to penicillin G and 6 (20%) were resistant against it. Only one oxy tetracycline sensitive strain was found, while 5 (16.7%) showed moderate sensitivity and 24 (80%) were resistant to it. Examination of the antibiotic sensitivity of A. pleuropneumoniae with the disk diffusion method proved to be less sensitive, so the results of the disk diffusion test have to be interpreted carefully.
|Number of pages||7|
|Journal||Magyar Allatorvosok Lapja|
|Publication status||Published - Nov 1 2014|
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