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1、豬傳染性胸膜肺炎的發(fā)生癥狀及防治Thesymptoms,preventionandtreatmentofPorcineContagiousPleuropneumoniaPigsofallagesandsexesweresusceptible,ofwhich6weekto6montholdpigsweremorefrequent,but3montholdpigletswerethemostsusceptible?Theoccurreneeofthediseaseismostacuteoracutetypeofdisea
2、secourseandrapiddeath,acuteoutbreakofpigs,morbidityandmortalityisgenerallyabout50%,themostacutetypeofmortalitycanreach80%100%?Theonsetofthediseaseismarkedbyseasonality,occurringin4、5and9^11months.Suddenly,thepigrearingenvironmentchangeortransfer,ormixedgroupsof
3、crowdedlong-distancetransportation,poorventilation,highhumidity,temperatureshockstressfactorscancausetheoccurrenceofthisdiseaseoracceleratethespreadofthedisease,themorbidityandmortality.Epidemiology:Allagesofpigsweresusceptibletothedisease,butbecausematernalcol
4、ostrumantibodiesinthepresenceofthediseaseoccursmostfrequentlyinbreedingpigsandadultpigs(slaughterpigs)?Acutemortalityisveryhigh,whichisrelatedtoviruleneeandenvironmentalfactors?Themorbidityandmortalityarealsorelatedtothepresenceofotherdiseases,suchaspseudorabie
5、sandPRRS?Inaddition,largeherdsoffrequentherdsweremoresusceptibletodiseasethanthoserearedalone.Themainrouteoftransmissionisair,contactbetweenpigsandpigs,pollution,excretaorpersonneltransmission.Swinetransferorpolyculture,congestionandadverseweatherconditions(suc
6、hastemperature,humidityandsuddenchangeofpoorventilation)willacceleratethespreadofthediseaseandincreasedriskofdisease?Themostacute:suddenonset,theindividualdiseasepigsdidnotappearanyclinicalsymptoms,suddendeath?Sickpigbodytemperaturereaches41.5DEGC,fatigue,anore
7、xia,diarrheaorvomitingandmaybeshort-term,earlynoobviousrespiratorysymptoms,butincreasedpulserate,latestageheartfailureandcirculatorydisorder,nose,ears,eyesandhindquartersskincyanosis?Severedyspneaandhypothermiaoccurlate,andbloodybubblespassfromthemouthandnostri
8、lsbeforedeath?Thesickpigsdiedwithin24、36hoursoftheonsetofclinicalsymptoms?Acutedisease:pigbodytemperaturemayriseto40.5to41DEGC,skinredness,depression,anorexia,unwillingtosta
