China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (7): 2256-2263.doi: 10.16431/j.cnki.1671-7236.2020.07.032

• Basic Veterinary Medicine • Previous Articles     Next Articles

Isolation,Identification,Drug-resistant Phenotype Analysis and Drug Resistant Gene Detection of Salmonella at Goat Farms in Chongqing

FENG Lin1, WANG Xudong1, LI Jiubin2, DING Honglei1, YANG Yujiao1   

  1. 1. College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
    2. High School Affiliated to Southwest University, Chongqing 400700, China
  • Received:2020-03-08 Online:2020-07-20 Published:2020-07-18

Abstract: The purpose of this research was to acquire the situation of drug resistance and resistance genes prevalence of Salmonella isolated from goats in Chongqing.185 fecal samples were collected from 5 goat farms.Salmonella were isolated by selective enrichment and PCR,and their serotypes were determined.Then,the antimicrobial susceptibility of the isolates to 28 antimicrobial agents was measured.The mutations of quinolone resistance-determining region (QRDR),plasmid-mediated quinolone resistance (PMQR) and extended-spectrum β-lactamases (ESBL) genes were also detected.A total of 11 Salmonella isolates were obtained from goats,and 10 of them were S.Derby.The isolated strains were more resistant to ampicillin,cefazolin,cefalexin,cefotaxime,tetracycline and pefloxacin,and 9 strains showed multi-drug resistant to 3-7 classes of antimicrobial agents.All strains had QRDR resistant mutations and carried blaTEM gene,whereas,7 strains carried 1-5 PMQR genes.On the whole,Salmonella isolated from goats were resistant to common used antimicrobials.Meanwhile,drug resistant mutations and drug resistant genes were widespread in the isolates.

Key words: goats; Salmonella; antimicrobial susceptibility; serotype; drug resistance gene

CLC Number: