سال انتشار: ۱۳۸۷

محل انتشار: اولین کنگره بین المللی مدیریت بهداشتی و بیماریهای آبزیان

تعداد صفحات: ۱

نویسنده(ها):

Sheikh Aftab Uddin – Institute of Marine Sciences and Fisheries, University of Chittagong, Bangladesh
Md. Abdul Kader –

چکیده:

A major disease outbreak in 1994-95, namely white spot disease struck the shrimp aquaculture throughout the country and resulted in increased use of antibiotics, chemicals for treatment and disinfection. Many farmers and hatchery workers also use antibiotics as prophylactically even when pathogens are not detected. In Bangladesh, there have been no document/data about the use of drugs, chemicals
and antibiotics in shrimp aquaculture. The purpose of this study is to document the antibiotics, chemicals and biological products used in shrimp aquaculture in Bangladesh taking into consideration about shrimp disease problems and occupational health hazard and environmental
chemotherapeutics.
Method & Materials: This study was carried out between Feb-2007 to Jun-2008. A total 50 ghers were surveyed. Among them 20 were in south eastern and 30 were in south western region. Almost all hatcheries were selected in Cox’s Bazar and Teknaf area . Information related to the use of antibiotics and chemicals to treat shrimp diseases were collected based on a personally interviewed pre-defined questionnaire. The questionnaire was designed to collect information on the use of chemicals, disinfectants and antibiotic agents. Collected information was presented in tabular form and was compared with that other authors found in literature.
Results & Conclusion: About 75% semi-intensive and 38% of extensive farms were found disease affected during the investigation period. Of the disease affected farms, most of the extensive farmers didn’t apply any chemicals or antibiotics. Only few extensive farmers used oxytetracycline (mixed with feed) and formalin to control common diseases. About 100% of semi-intensive farms were used antibiotics like oxytetracycline, erythromycin, furazolidone, ciprofloxacin antibacterials like sulphamethaoxazole with trimethaoprim and chemicals like malachite green, copper sulphate, formalin and oxolinic acid to control common shrimp diseases. Probiotics, mostly bacillus strains have recently introduced to shrimp farming in Bangladesh. Chloramphenicol, Erythromycin, Oxytetracycline and Prefuran were found to be widely used with varying success to control all types of bacteria. Forty percent of the hatcheries used the chloramphenicol, 25% hatcheries used erythromycin, 20% used prefuran and 15% used oxytetracycline in broodstock maintenance to prevent possible bacterial infections after eye stalk ablation. 75% of the surveyed hatcheries used formalin and 25% used malachite green to control parasites. Treflan and malachite green have been used as antifungal agents. The most important reasons to control the use of antibiotics in shrimp hatcheries are the risk of development of resistant