Abstract
In order to know the existing situation of different chemicals and aqua-drugs used for fish health management an investigation was conducted following a time frame of May, 2019 to October, 2019 at Rangpur district of Bangladesh. Data were collected from the randomly selected fish farmers, company representatives and chemical sellers through questionnaire interview, personal contact and Focus Group Discussion (FGD). Farmers were facing several water quality problems associated with different fish diseases. To overcome those obstacles they use variety of chemicals inclulding lime, salt, potassium permanganate, urea, TSP, phitkiri and copper sulphate. Farmers used different chemicals for various purposes like Aquapure, Biopond, Zeofresh, JV-zeolite, Zeorich, Megazeo plus, Geo-ren etc. for pond preparation and water quality management; Sumithion, Engreb, I-mec, Sanmarine etc. for eradication of unwanted species; Oxymax, Oxymore, Oxylife, Aci-ox, Oxyrich, Oxy-aqua, Oxyren etc. to increase oxygen concentration and Gasonil, Gastrap, Bioaqua-50, Gasonex, Metrix, Pondkleen etc. for reducing harmful gases in pond water. Used disinfectants like Timsen, Virex, Polgard+, , Micronil etc.; antibiotics include Renamycin, Eskamycin, Bactitab, Cotrim vet bolus, Chemycin, Aquamycin etc.; Aqua photo, Safegut, Biomax, Profs, Pond care etc. were the used probiotics where various growth promoters include Panvit aqua, Nutrigel, Aquazyme, Spa gelly, Charger gel etc. Some problems were reported regarding the use of chemicals such as their indiscriminate use, method of application, time of application and inappropriate doses.
 Asian J. Med. Biol. Res. June 2020, 6(2): 283-293
Highlights
Aquaculture is one of the fast growing food production divisions in the world
It was observed that fish farmers used different types of commercial chemicals and aqua-drugs which were broadly categorized as chemicals used for removal of unwanted species, for pond preparation and water quality management, to increase dissolve oxygen concentration, to reduce harmful gasses, as disinfectants, antibiotics, growth promoters and probiotics against diseases
To eradicate undesirable species farmers of Rangpur region used various chemicals such as Sumithion, Engreb, I-mec, Sanmarine, Rota plus, Tea seed meal and Nigotox aqua which is more or less similar to the findings of Anwar et al (2018) and Rahman et al (2015) In the study area Aquapure, Biopond, Zeofresh, JV-zeolite, Zeorich, Geo-prime, Megazeo plus, Zeolite gold, Geo-ren and Acme zeolite were used for pond preparation and water quality management by the selected fish farmers which is analogous to the study of Rahman et al (2015)
Summary
Aquaculture is one of the fast growing food production divisions in the world This sector has expanded, diversified, intensified and technologically advanced in Bangladesh over the last few decades (Shamsuzzaman and Biswas, 2012). In aquatic animal health management, there has been an increasing trend of using aqua-medicines and chemicals due to the expansion of aquaculture in Bangladesh (Hossain et al, 2014). Farmers are using various types of compounds in fish health management and disease treatment such as growth promoters, antibiotics, disinfectants, probiotics and to develop water quality and to increase dissolved oxygen concentration (Alam and Rashid, 2014). In Bangladesh, approximately 400 different types of aqua-medicines are produced and marketed by 100 pharmaceutical companies (Alam and Rashid, 2014). Lots of chemical industries and chemical sellers influence fish farmers to use these chemicals in their culture units, most of the farmers have not adequate knowledge about the drug
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