11/03/2015 INFECTIOUSBRONCHITIS(IB)DiseasesofPoultryThePoultrySite

http://www.thepoultrysite.com/publications/6/diseasesofpoultry/194/infectiousbronchitisib 1/3

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BacterialDiseasesESCHERICHIACOLIINFECTIONSSALMONELLOSESPARATYPHOIDINFECTIONSFOWLCHOLERARIEMERELLAANATIPESTIFERINFECTIONSMYCOPLASMANECROTICENTERITISCHOLANGIOHEPATITISINBROILERCHICKENSGANGRENOUSDERMATITISBOTULISMAVIANTUBERCULOSIS

ViralDiseasesVIRALINCLUSIONBODYHEPATITISHAEMORRHAGICENTERITISOFTURKEYSEGGDROPSYNDROME1976ADENOVIRUSGROUPIASSOCIATEDINFECTIONSINFECTIOUSBURSALDISEASE(GUMBORO)INFECTIOUSBRONCHITIS(IB)LARYNGOTRACHEITISSWOLLENHEADSYNDROMEINFECTIOUSENCEPHALOMYELITISNEWCASTLEDISEASEFOWLPOXREOVIRUSINFECTIONS

NeoplasticDiseasesinPoultryVIRUSINDUCEDNEOPLASTICDISEASESMAREK'SDISEASELYMPHOIDLEUKOSISMYELOCYTOMATOSISERYTHROBLASTOSISADENOCARCINOMATOSIS

ParasiticDiseasesCOCCIDIOSISHISTOMONOSISASCARIDIOSISRAILLIETINOSISKNEMIDOKOPTOSIS

MycosesandMycotoxicosesASPERGILLOSISASPERGILLUSGRANULOMATOUSDERMATITISAFLATOXICOSISCANDIDIASISFUSARIOTOXICOSES

DeficiencyDiseasesVITAMINB2DEFICIENCYVITAMINBiDEFICIENCYVITAMINEDEFICIENCYFATTYLIVERHAEMORRHAGICSYNDROMESLIPPEDTENDON(PEROSIS)

OtherPULMONARYHYPERTENSION(ASCITIS)SYNDROMEINBROILERCHICKENSAMYLOIDOSISDEEPPECTORALMYOPATHYRUPTUREOFTHEGASTROCNEMIUSTENDONINBROILERBREEDERSCAGELAYERFATIGUEDYSCHONDROPLASIATHYPERKERATOSIS

INFECTIOUSBRONCHITIS(IB)

226.In chickens up to the age of 4 weeks, IB is manifested by severe respiratorysigns (sneezing, coughing, and rales). Rhinites and conjunctivites, depression andcrowdingaroundheatsourcesareobserved.Thedeath ratecould reach100%.Themortality in young chickens is usually insignificant provided that a secondaryinfectionwithadifferentagentisnotoccurring.Insuchcases,thereisamoderatetosevere inflammatory cell infiltration of upper respiratory tract mucosa, resulting Inthickenedandmorecompactmucosa.

227.228.In layer hens infected with the IB virus, oophorites and dystrophicnecrobiotic lesions affecting primarily the middle and the last thirds of oviduct'smucous coat are observed. The consequences are drop in egg production,appearanceandincreaseinthenumberofdeformedandpigmentlesseggsoreggswithsoftshellsandwateryeggwhite.

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DiseasesofPoultryByIvanDinev,DVM,PhD

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11/03/2015 INFECTIOUSBRONCHITIS(IB)DiseasesofPoultryThePoultrySite

http://www.thepoultrysite.com/publications/6/diseasesofpoultry/194/infectiousbronchitisib 2/3

GOUTHYPERANDROGENISMINBROILERCHICKENSEFFECTOFSTICKYWILLY(GALIUMAPARINE)SEEDSONHEALTHYSTATUSANDPRODUCTIONTRAITSINBROILERCHICKENSGIZZARDIMPACTIONINTURKEYPOULTSROUNDHEARTINTURKEYS(DILATEDCARDIOMYOPATHY)ACUTESELENIUMINTOXICATIONACUTEPROPANEBUTANEINTOXICATIONSPONTANEOUSRUPTUREOFTHECAUDIALRENALARTERYINTURKEYSSUBCUTANEOUSEMPHYSEMAGASTROINTESTINALIMPACTIONMALFORMATIONS

229.230.231.Thenephrotropicstrainsof theIBviruscausesevere inflammatoryanddystrophic necrobiotic damages of kidneys: urolithiasis (229), interstitial nephritis(230), haemorrhages (231) that considerably increase the death rate. Under naturalconditions,onlyhensareinfected.Nonimmunebirdsofallagesaresusceptible.Thediseaseisevenseeninvaccinatedflocks.Theserologicalmethods(VN,ELISAetc.)arewidelyusedinthediagnostics.Atpresent,PCRisusedforrapididentificationofIB virus serotypes. IB shouldbedistinguished fromotheracute respiratorydiseaseas ND, laryngotracheitis and infectious coryza. The vaccination with live or killedvaccinesiseffectiveonly if theycontaintherespectiveserotypeofthevirusforthegivenregion.

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11/03/2015 INFECTIOUSBRONCHITIS(IB)DiseasesofPoultryThePoultrySite

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