Isolation,identification and antimicrobial drug resistance analysis of Salmonella from migratory birds at Poyang Lake,Jiangxi Province
[Objective]This study was to discuss the resistance analysis of migratory bird-derived Salmonella to common antimicrobial drugs.[Method]In this experiment,108 fecal samples of migratory birds collected from Poyang Lake,Jiangxi Province,were processed for bacterial isolation by using the plate delineation method and strain identification,and the strains were tested for susceptibility to eight commonly used antimicrobial drugs by the paper diffusion method.Then the statistical data were analyzed for drug susceptibility,multi-drug resistance and drug resistance spectrum.[Result]The results showed that 96 strains of Salmonella were isolated,of which the positivity rate was 88.89%;Salmonella showed different degrees of resistance to 8 commonly used antimicrobial drugs,and the resistance rate was 88.54%;the drug resistance rate to ampicillin(64.58%)was the highest,followed by the gentamicin(42.71%),streptomycin(39.58%),tetracycline(33.33%),ciprofloxacin(23.96%),cefotaxime(17.71%),norfloxacin(8.33%),and chloramphenicol(4.17%);the Salmonella were highly sensitive to norfloxacin(61.46%),followed by the chloramphenicol(60.42%),streptomycin(37.50%),gentamicin(36.46%),ciprofloxacin(36.46%),tetracycline(20.83%),cefotaxime(13.54%),and ampicillin(8.33%);39 drug resistance spectrum combinations were produced in 96 strains of Salmonella of avian origin isolated,all of which were more than 6 times,mainly 1～4 times,and the rate of multi-drug resistance reached 42.71%.[Conclusion]Salmonella in this region is resistant to antimicrobial drugs,showing multi-drug resistance and diversity in its drug resistance spectrum.
Salmonellaisolation and identificationdrug resistance analysisdrug resistance spectrum
万方数据
维普
