如果您无法下载资料，请参考说明：
1、部分资料下载需要金币，请确保您的账户上有足够的金币
2、已购买过的文档，再次下载不重复扣费
3、资料包下载后请先用软件解压，在使用对应软件打开
TheIdentificationandEstablishmentofthePCRAssayofMycoplasmagallisepticumJinanstrainisolatePoultrymycoplasmadiseaseisoneofthemostimportantinfectiousdiseasesanditcausegreatattentioninrecentyears.Especiallyhasahighmorbidityinthebroilerbreedingwhichconditionsiscrudeandsimple.Clinicaldiagnosisandtreatmentaredifficultbecausemycoplasmaandotherbacteriaalwaysmixedinfection,anditoftencausedgreateconomiclosses.AtpresentthecommonmycoplasmaischickenMycoplasmaGallisepticum(MG)andMycoplasmasynoviae(MS).MGmainlycauseChronicRespiratorydiseases(CRD),andaseriousofpneumatocystinflammation.MSmainlycausejointdiseaseofchickensandsubclinicalrespiratorysymptoms.Pneumatocystinflammationandjointdiseaseleadtotheketonebodyabandonrateofbroilersignificantlyincreased.Mycoplasmameleagridis(MM)mainlycauseturkeydiseasesandmakerespiratorysymptomsandbonedeformityofyouthturkey.Duetomycoplasmawaspassedbyeggs,soanykindofmycoplasmainfectionbreedinghens,thehatchingrateoftheeggandsurvivalrateofoffspringchickswillbesignificantlyreduced.MGdoesn'thascytodermandisagram-negativebacteria.Since1933,NelsonisthefirstmanfoundMG,untillnowwehaveacomprehensiveandsystematicunderstandingaboutit.MGcancausechronicrespiratorydiseaseofchickens,thechickenwillhavecough,runnynose,mouthbreathingheavily.ChickenofinfectionMGthatmayhasimmunitydecreasly,easyconcurrentorsecondaryEscherichiacolidisease,Newcastledisease,infectiousbronchitisandinfectiouslaryngotracheitisetc..Accordingtostatistics,comparedwithhealtychicks,thechicksweakcheeperrateofMGinfectionincreasesabout10%,layingratefellby10~20%,broilerweightlossof10to30%.ThecommoditychickenMGinfectionpositiverateis50~80%inourcountry.MGinfectionhasbecomeaseriousquestiononintensifictionchickens.Scholarsbothathomeandabroadhavemanyresearchofthedisease.PoultrymycoplasmaELISAcommoditydiagnostickithasbeensuccessfullydevelopededinmanycountries.HowervemostofthedetectionforserumantibodyandeveryclinicalsamplesneedtotesttheMG,MSatthesametime.Itisexpensiveandnotsuitablefordetectinglarge-scalepur
立即下载
