4、性监测IV山东农业大学硕士专业学位论文Isolation and identification of chicken Salmonella andSurveillance of drug resistanceAbstractSalmonellosis isacommonzoonoticdisease. It couldnot onlycauseserious economiclosses inanimal production, but alsoaseriousthreat to humanhealth. Applicationofantibiotics has playedahu
5、geroleinthecontrollingandpreventionofsalmonellosis in humans andlivestock, but withawiderangecontinuous and inappropriateuseofantibiotics, Salmonellaresistancetoantimicrobial agentshas becomeincreasinglycommon. 246 suspecteddiseaseofchicken feed(whichis215 21dayold chicks, 31 wereforthe15 week