Resistance Survey of Escherichia coli Isolates to Antimicrobial Drugs from a Cattle Farm in Ili |
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| Authors: | NAN Hai-chen GUO Qing-yong XIA Li-ning WANG Jin DI Li-na GAO Juan |
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| Institution: | 1.College of Veterinary Medicine,Xinjiang Agricultural University,Urumqi 830052,China；2.College of Chemical Engineering,Xinjiang Agricultural University,Urumqi 830052,China |
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| Abstract: | In order to investigate Escherichia coli isolates from a cattle farm to commonly used antimicrobial drugs in Ili, Xinjiang, minimal inhibitory concentrations (MICs) of the antimicrobial drugs to these isolates from drinking water, feed and fecal samples were determined by broth micro-dilution method. The results showed that 25 Escherichia coli isolates were confirmed from 25 drinking water samples (100.0%), the resistance rates to amoxicillin/clavulanic acid, ampicillin, norfloxacin, enrofloxacin and apramycin were 12.0%, 4.0%, 4.0%, 8.0% and 8.0%, respectively. 47 Escherichia coli isolates were confirmed from 72 feed samples (65.3%), the resistance rates to amoxicillin/clavulanic acid, ampicillin, norfloxacin and apramycin were 36.2%, 19.1%, 4.3% and 4.3%, respectively. 80 Escherichia coli isolates were confirmed from 80 fecal samples (100.0%), the resistance rates to amikacin, ampicillin, enrofloxacin, gentamicin, norfloxacin, ciprofloxacin, amoxicillin/clavulanic acid and ceftiofur were 12.5%, 7.5%, 7.5%, 5.0%, 2.5%, 2.5%, 1.3% and 1.3%, respectively, only to apramycin sensitive. Resistances of Escherichia coli isolates from the cattle were general to the antimicrobial drugs, but were higher rate of intermediary to some antimicrobial drugs. So treatment of the diseases caused by bacteria should avoid using antimicrobial drugs of non-sensitivity and high intermediary rate. Drinking water and feed in the cattle farm existed the risk of being contaminated by resistant Escherichia coli. |
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| Keywords: | cattle farm Escherichia coli antimicrobial drugs resistance broth micro-dilution method |
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