›› 2012, Vol. 39 ›› Issue (6): 165-168.

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Isolation, Identification and Drug Resistance Analysis of a Pathogenic Enterococcus Strain Isolated from Chicken

WANG Tao, DU Dong-dong, ZHUANG Yan-fei, CHANG Wei-shan   

  1. College of Animal Science and Veterinary Medicine,Shandong Agricultural University,Tai’an 271018,China
  • Received:2011-12-22 Online:2012-06-20 Published:2012-07-02

Abstract: This experiment was aimed at identifying a Broad-spectrum antibiotic resistant bacteria separated from chickens and discussing the mechanism of antibiotic resistance of the bacteria from the viewpoint of molecular biology. Identify the training characteristics and biochemical experiments of the bacteria based on the standard of Common Bacteria System Identification Manual. A pair of 16S rDNA general primer was designed to amplify 16S rDNA and sequenced. 12 pairs of primer amplify resistance gene was designed based on the results of sensitive method of antibiotic test. The results of training characteristics and biochemical experiments of the bacteria showed that they were Enterococcus. A target set of 1465 bp was amplified by PCR. Sensitivity tests showed that the bacteria tolerate several antibiotics. The results of PCR showed that there exist ant(6)-iv, OXA-10, tetM, CTX-M-1, TEM gene, so it was Enterococcus. The existence of resistance gene was one of the reasons why the bacteria generate resistance characteristics.

Key words: Enterococci; identification; drug-resistance; drug-resistance gene

CLC Number: