Resistance test of avian salmonella strains in antibacterial drugs

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Published: Jan 31, 2018
DOI: https://doi.org/10.12681/jhvms.15762
P. IORDANIDIS (Π. ΙΟΡΔΑΝΙΔΗΣ)
Clinic of Poultry Diseases, Veterinary Faculty, Aristotelian University of Thessaloniki
I. GEORGOPOULOU (Ι. ΓΕΩΡΓΟΠΟΥΛΟΥ)
Clinic of Poultry Diseases, Veterinary Faculty, Aristotelian University of Thessaloniki
Abstract
In the present paper in vitro resistance of 241 salmonella isolates to 9 antibacterial drugs was studied. Salmonella strains were isolated from various avian species during the period 1990-1994. The resistance of these isolates was determined by using the Kirbi Bauer disc diffusion method. Resistance to Oxytetracycline, furazolidone and trimethoprim ranged from 6 to 50% and the highest percentage (50%) was noted to Oxytetracycline. Resistance to spectinomycin reached the highest levels (56-80%). Similar results were noted by using amoxicillin, to which resistance was relateively lower ( — 50%) with a slight decrease to 15% concerning the year 1992 isolates. Resistance to enrofloxaxin and flumequin was at 25% approximately, only for strains isolated during 1991 and 1992. All remaining isolates were sensitive. Low resistance (11%) declining to 3% during the last year of our investigation was noted when neomycin was used. Finally, resistance to chloramphenicol remained below 10%.
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