Antibiotic Resistance of Aeromonas veronii and Streptococcus agalactiae in Aquatic Animals from Guangdong
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Abstract:
To evaluate the antibiotic sensitivity of Aeromonas veronii and Streptococcus agalactiae from aquatic animals in Guangdong Province, Aeromonas veronii and Streptococcus agalactiae were isolated from aquatic animals cultured in 9 areas of Guangdong Province. Among them, 32 strains of Aeromonas veronii and 16 strains of Streptococcus agalactiae were isolated. The sensitivity of these strains to 14 different antibiotics was determined using drug-sensitive disk method. It was found that the two strains of bacteria were sensitive to 7 kinds of antibiotics. Based on the detection of drug resistance of isolated strains to 7 sensitive antibiotics by minimum inhibitory concentration(MIC) method. 32 strains of Aeromonas veronii were found to be resistant to thiamphenicol (29%), sensitive to oxytetracycline hydrochloride (41%) and josamycin (38%), ciprofloxacin hydrochloride (82%), doxycycline hydrochloride (82%), florfenicol (75%) and sulfamethazine (100%). All of 16 Streptococcus agalactiae strains were found to be resistant to thiamphenicol (100%), but sensitive to josamycin (25%), and ciprofloxacin hydrochloride (100%), doxycycline hydrochloride (100%), oxytetracycline hydrochloride (100%), florfenicol (100%) and sulfamethazine (100%). This study provides some reference for the future use of antibiotics in Aeromonas veronii and Streptococcus agalactiae, and promotes the rational use of antibiotics.
