EFFECTS OF IODINE, GALIC POWDER, VITAMIN C FOR PREVENTING STREPTOCOCCOSIS IN CULTURED TILAPIA IN A WET LABORATORY

Abstract

The use of drugs and chemicals for tilapia has emerged as a major concern in aquaculture areas. The present study sought to define the effect of Iodine, galic powder and Vitamin C in preventing and treating diseases of Tilapia associated S. agalactiae. Data concerning Iodine, galic powder, Vitamin C were collected from 30 drug stores in previous research. S. agalactiae was cultured in nutrient broth media in incubator shaker at 30^oC for 18 h, when the bacteria density reached 10⁷ cfu / mL, it was used to infect fish. The results showed that: Garlic powder (0.1 g/kg fish) and Vitamin C (5 g/kg fish) or Garlic powder (0.1 g/kg fish) and Iodine (0.05 mL/100 Lit) were effective in treating the Streptococcosis disease with feeding time of 3 and 5 days, the survival rate of tilapia infected with S. agalactiae being 66.7 – 75.6% and 64.4 – 71.1% respectively compared with the positive control (19.9%). Meanwhile, Vitamin C (5g/kg fish) and Iodine (0.05mL/100 Lit) used feeding time of 3 and 5 days were ineffective in preventing Streptococcosis in tilapia.