Examining anti-bacterial effects of juices derived from medicinal herbs on aeromonas hydrophila strain causing ulcer on snakeheads

Abstract

The study was carried out to examine anti-bacterial effects of juices derived from four herbal species on Aeromonas hydrophila strain which causes ulcer on snakeheads. Results showed that four herbs Allium sativum, Zingiber officinale, Allium tuberosum and Eclipta prostrate had antibacterial zone diameters of 25.97, 13.07, 11.33, and 9.9 mm respectively. On the other hand, in case of garlic juice diluted in four solvent including ethanol, alcohol (95o ), distilled water, and chloroform with rate 1:1, the results indicated that no significant difference was found when garlic diluted in solvents as ethanol, alcohol, and distilled water with anti-bacterial zone diameters which fluctuated within 25.23-25.53 mm, while being diluted in chloroform solvent only reached 9.2 mm in diameter of anti-bacterial. The experiment of injecting A. hydrophila into snakehead and using garlic juice diluted in distilled water with rate 1:1 and then mixed with food by dose of 80 ml/kg feed weight for snakehead ulcer treatment showed recovery and survival rate at 30% compared to the control tank.