Different Banned products which are used in fish and shrim farm and Hatcheryp aquaculture

Different Banned products which are being used in fish and shrimp aquaculture :

An attempt was made to identify the source of hazardous antibiotics, nitrofuran and chloramphenicol. Several focus group discussions were conducted in Cox’s Bazar with different stakeholders of the value chin as participants. Although it was difficult to identify the exact source of contamination of nitrofuran in shrimp, three most suspected source could be hatchery developed PL, Indian PL found in black market and 8-12 types of feeds available for shrimp husbandry (4-5 are of Indian origin).

It was found that many foreign technicians mostly from India and Thailand have been working in shrimp hatcheries. They usually work on contact basis of producing certain amount of PL and got commission from there. Hatchery used bleaching powder and Cipro-98 for water purification and   chloramphenicol (Bacteriocide-CL) and OTC (Bacteriocide-OTC) for treatment of disease. Beside these, hatchery technicians were found to use many unlabeled antibiotics for better production and survival of PL. this might be due to their unethical urge for more income as they were found to be paid by a percent commissin per PL basis. That unlabeled compounds could be either nitrofuran of chloramphenicol. The word in bold are the most prominent one which are being used in shrimp hatcheries in Cox’s Bazar region.

Table 1: Chemicals Banned for Use in Aquaculture/Shrimp Hatchery

(Source survey, 2014)

The following antibiotics, chemicals and other substances shall not be used in aquaculture/shrimp hatchery operation under any circumstances. A limit above zero is not a license to use the compound. Name	Description	Residue Limit (mg/kg)	Status
Group A
Stilbens, substances produced from Stilbens, their salts and Easters	Veterinary drug	0	Banned for use
Steroids, anabolic steroids	Veterinary drug	0	Banned for use
Chloramphenicol	Veterinary drug	0	Banned for use
Chloroform	Veterinary drug	0	Banned for use
Chlorpromazine	Veterinary drug	0	Banned for use
Colchicines	Veterinary drug	0	Banned for use
Daps one	Veterinary drug	0	Banned for use
Dimetridazole and other Nitrimidazoles (Ipronidazole)	Veterinary drug	0	Banned for use
Metronidazole	Veterinary drug	0	Banned for use
Nitrofurans (including Furazolidone, Furaltedon, Furasol, Nitrofurazone and Nitrofurantoin)	Veterinary drug	0	Banned for use
Ronidazole	Veterinary drug	0	Banned for use
Tetracycline (Oxytetracycline, Chlortetracycline etc.)	Veterinary drug	0	Banned for use
Malachite Green	Veterinary drug	0	Banned for use
Crystal Violet	Veterinary drug	0	Banned for use
Group B
Antibacterial substances, Sulfonamides and Quinolons	Veterinary drug	0	Banned for use
Other veterinary drugs used in animals: Antihelminths	Veterinary drug	0	Banned for use
Other substances and environmental contaminants: • Organochlorines including PCBs. • Chemical substances. • Mycotoxines • Unapproved dyes	Chemicals	0	Banned for use