Prevalence of coliform and Salmonella in cultured prawn (Macrobrachium rosenbergii) ghers of different management conditions at Dumuria, Khulna, Bangladesh
Paper Details
Prevalence of coliform and Salmonella in cultured prawn (Macrobrachium rosenbergii) ghers of different management conditions at Dumuria, Khulna, Bangladesh
Abstract
An investigation was carried out to enumerate the coliform bacteria (Total coliform and faecal coliform) and to detect the pathogenic bacteria, Salmonella in cultured prawn at Dumuria, Khulna region from August to October, 2011. Fifty four prawn samples were collected from eighteen prawn farms under three management conditions viz traditional, improved traditional and semi-intensive management system. The samples were analyzed in Biochemistry and Molecular Genetics laboratory of Fisheris and Marine Resource Technology Discipline at Khulna University. The average number of total coliform was observed 15.33 MPN/g, 87.00MPN/g and 355.84 MPN/g and the average faecal coliform was observed 4.83 MPN/g, 10.00 MPN/g and 22 MPN/g in semi-intensive, improved traditional and traditional management farms respectively. The TC and FC of semi-intensive and improved traditional management system were within the good quality range (<100 MPN/g and 11 MPN/g) but in traditional management system it exceeded the limit. Salmonella spp. was absent both in semi- intensive and improved traditional management system but found only in traditional management system where raw cow dung, poultry faeces, raw meats were used. Bacterial loads of prawn samples were different because the management conditions were not similar and the water sources of the farms were different.
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