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Abstract
The study was conducted to find the most effective antibiotic to treat diseases caused by Vibrio spp. On vannamei farming industry in Ben Tre. Vibrio spp. bacteria samples were collected and isolated from cultured pond and diseased shrimp by the method of Buntin et al. (2008). Vibrio spp. were identified by Nam Khoa IDS 14GNR kit. Antibiogram were performed and evaluated by diffusion method on agar plates according to Bauer-kirby (1966) and CLSI standard (2016) with 17 antibiotics commonly current using in shrimp farming. The research results showed that the status of antibiotics resistance as following: with V. parahaemolyticus, Apramycin was resisted highest with the rate of 66.7%. Cefotaxime and Levofloxacine had been sensentive highest with the same rate of 100%. With V. alginolyticus, Oxyetracyclin was resisted highest with the rate of 60%. Levofloxacine had been sensentive highest with the rate of 100%. However, V. vulnificus resisted to Metronidazole with the highest at 66.7% and it was most sensitive to Chloramphenicol, Doxycycline, Levofloxacine with the same rate of 93.3%. In addition, the results of ANOVA analysis showed that the status of antibiotic resistance of three species including V. parahaemolyticus, V. alginolyticus and V. vulnifi cus were similarity. There was no significant difference (p> 0.05) about antibiotics resistance abilities between species of Vibrio that It was isolated in 3 districts of Binh Dai, Ba Tri and Thanh Phu.
Keywords: antibiogram, bacteria-resistance, Ben Tre, Vibrio spp.