PRESENT STATUS OF USING AQUA MEDICINES AND CHEMICALS ON FISH HEALTH MANAGEMENT IN BOGURA DISTRICT, BANGLADESH

Abstract

Current investigation was conducted to comprehend existing status of the practice of aqua-medicines and chemicals for fish health management in freshwater aquaculture in Bogura district. Data was collected via questionnaire survey, individual communication, focus group discussion with target group and representative of aqua-medicine enterprises. All fish farmers had fish farming experience and most of them were facing by various diseases and water quality problems in the study area. A variety of chemicals including disease treatment, pond preparation, disinfectants, growth promoter, probiotics, toxic gas reducer and oxygen producer were produced by the selected aqua medicine companies and being used in the selected aquaculture zone. Salt, potassium permanganate, lime, formalin, bleaching powder, sumithion, melathion, methylene blue and malachite green were frequently used as traditional chemicals in heath management. Among the new aqua-chemicals geotox, jv zeolite, mega plus, aquastar pond, acme's zeolite, zeo-fresh, aqua green, biomin pond life, aquakleen, megagio gold, and aqua boost were utmost extensively used. Probiotics like profs, aqua photo, aqua gold, super biotic and pond care were used. The selected farmers also used growth promoter such as saltose, panvit aqua, spa gelly, aqua boost used as growth promoter and bio-pond, biogrow, aqua pure, gasstrap, metrix, geo-rich bio-aqua 50 and aqua magic as toxic gas reducer. Approximately 11 trade names of antibiotics were marketed in the selected area among them some were used by the fish farmers. Their main active ingredients were chlortetracycline, oxytetracycline, amoxicillin, co-trimoxazole, azithromycin and sulphadiazine. The survey identified some problems connected with the practice of such chemicals such as shortage of fish farmer’s knowledge about the usage of chemicals, proper dosage and their maintenance