Detection of antibiotics resistant faecal Coliform and Streptococci isolates from ground water
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2018, Vol 1, Issue 1
Abstract
The non therapeutic use of antibiotics in swine feed can select for antibiotic resistance in swine enteric bacteria. Leaking swine waste storage pits and the land-application of swine manure can result in the dispersion of resistant bacteria to water sources. However, there are few data comparing levels of resistant bacteria in swine manure impacted water sources versus unaffected sources. The goal of this study was to analyze ground water situated up and down gradient from a swine facility for antibiotic-resistant enterococci and other fecal indicators.Methods: Ground water samples (n = 12) were collected from different locations of lucknow. From Jan to May 2013. Fecal indicators were isolated by membrane filtration, and enterococci (n = 200) were tested for susceptibility to erythromycin, amoxicillin, kanamycin, chloramphenicol, novobiocin, streptomycin, ciprofloxacin, teicoplanin, gentamycin, norfloxacin.Results: Median concentrations of enterococci, fecal coliforms, and Escherichia coli were 4 to 33-fold higher in down-gradient versus up-gradient surface water and groundwater. We observed higher minimal inhibitory concentrations for four antibiotics in enterococci isolated from down-gradient versus up-gradient surface water and groundwater. Elevated percentages of erythromycin- (p = 0.02) and Norfloxacin -resistant (p = 0.06) enterococci were detected in down-gradient surface waters, and higher percentages of Norfloxacin - (p = 0.07) and Ciprofloxacin-resistant (p < 0.001) enterococci were detected in down-gradient groundwater. Conclusions: We detected elevated levels of fecal indicators and antibiotic-resistant enterococci in water sources situated down gradient from a swine facility compared with up-gradient sources. These findings provide additional evidence that water contaminated with swine manure could contribute to the spread of antibiotic resistance
Authors and Affiliations
Shaista Suhail
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