Infectious Bursal Disease (Gumboro) - Diseases of Poultry - The Poultry Site
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11/03/2015 INFECTIOUS BURSAL DISEASE (GUMBORO) Diseases of Poultry The Poultry Site http://www.thepoultrysite.com/publications/6/diseasesofpoultry/193/infectiousbursaldiseasegumboro 1/4 Subscribe | Marketing Packages | Forums | Cookie Law | Search here Follow Bacterial Diseases ESCHERICHIA COLI INFECTIONS SALMONELLOSES PARATYPHOID INFECTIONS FOWL CHOLERA RIEMERELLA ANATIPESTIFER INFECTI MYCOPLASMA NECROTIC ENTERITIS CHOLANGIOHEPATITIS IN BROILER CH GANGRENOUS DERMATITIS BOTULISM AVIAN TUBERCULOSIS Viral Diseases VIRAL INCLUSION BODY HEPATITIS HAEMORRHAGIC ENTERITIS OF TURKE EGG DROP SYNDROME 1976 ADENOVIRUS GROUP I ASSOCIATED INFECTIOUS BURSAL DISEASE (GUMB INFECTIOUS BRONCHITIS (IB) LARYNGOTRACHEITIS SWOLLEN HEAD SYNDROME INFECTIOUS ENCEPHALOMYELITIS NEWCASTLE DISEASE FOWL POX REOVIRUS INFECTIONS Neoplastic Diseases in Poultry VIRUSINDUCED NEOPLASTIC DISEAS LYMPHOID LEUKOSIS MYELOCYTOMATOSIS ERYTHROBLASTOSIS ADENOCARCINOMATOSIS Parasitic Diseases COCCIDIOSIS HISTOMONOSIS ASCARIDIOSIS RAILLIETINOSIS KNEMIDOKOPTOSIS Mycoses and Mycotoxicoses ASPERGILLOSIS ASPERGILLUS GRANULOMATOUS DER AFLATOXICOSIS CANDIDIASIS FUSARIOTOXICOSES Deficiency Diseases VITAMIN B2 DEFICIENCY VITAMIN Bi DEFICIENCY VITAMIN E DEFICIENCY FATTY LIVER HAEMORRHAGIC SYNDR SLIPPED TENDON (PEROSIS) Other PULMONARY HYPERTENSION (ASCITIS AMYLOIDOSIS DEEP PECTORAL MYOPATHY RUPTURE OF THE GASTROCNEMIUS T CAGE LAYER FATIGUE DYSCHONDROPLASIA THYPERKERATOSIS INFECTIOUS BURSAL DISEASE (GUMBORO) 215.Infectious bursal disease (IBD, Gumboro) is an acute, highly contagious viral infection in chickens manifested by inflammation and subsequent atrophy of the bursa of Fabricius, various degrees of nephrosonephritis and immunosuppression. Clinically the disease is seen only in chickens older than 3 weeks. The feathers around the vent are usually stained with faeces containing plenty of urates. 216.The period of most apparent clinical symptoms and high death rate is at the age of 3 6 weeks. IBD could however be observed as long as chickens have a functioning bursa (up to the age of 16 weeks). In chickens younger than 3 weeks, IBD could be subclinical, but injured bursa leads to immunosuppression. Also, diarrhoea, anorexia, depression, ruffled feathers, especially in the region of the head and the neck are present. Our Sponsors Partners Halamid HyLine International ECO Animal Health Pas Reform Petersime Jansen Poultry Equipment AB Vista rl consulting CID LINES Vencomatic Group Biomin Novogen Grimaud Freres 3.2k Like Book Contents Diseases of Poultry By Ivan Dinev, DVM, PhD News & Analysis Features Markets & Reports Knowledge Centre Business Directory Events Our Shop Our sites
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Infectious Bursal Disease (Gumboro)
Transcript of Infectious Bursal Disease (Gumboro) - Diseases of Poultry - The Poultry Site
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11/03/2015 INFECTIOUSBURSALDISEASE(GUMBORO)DiseasesofPoultryThePoultrySite
http://www.thepoultrysite.com/publications/6/diseasesofpoultry/193/infectiousbursaldiseasegumboro 1/4
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BacterialDiseasesESCHERICHIACOLIINFECTIONSSALMONELLOSESPARATYPHOIDINFECTIONSFOWLCHOLERARIEMERELLAANATIPESTIFERINFECTIONSMYCOPLASMANECROTICENTERITISCHOLANGIOHEPATITISINBROILERCHICKENSGANGRENOUSDERMATITISBOTULISMAVIANTUBERCULOSIS
ViralDiseasesVIRALINCLUSIONBODYHEPATITISHAEMORRHAGICENTERITISOFTURKEYSEGGDROPSYNDROME1976ADENOVIRUSGROUPIASSOCIATEDINFECTIONSINFECTIOUSBURSALDISEASE(GUMBORO)INFECTIOUSBRONCHITIS(IB)LARYNGOTRACHEITISSWOLLENHEADSYNDROMEINFECTIOUSENCEPHALOMYELITISNEWCASTLEDISEASEFOWLPOXREOVIRUSINFECTIONS
NeoplasticDiseasesinPoultryVIRUSINDUCEDNEOPLASTICDISEASESMAREK'SDISEASELYMPHOIDLEUKOSISMYELOCYTOMATOSISERYTHROBLASTOSISADENOCARCINOMATOSIS
ParasiticDiseasesCOCCIDIOSISHISTOMONOSISASCARIDIOSISRAILLIETINOSISKNEMIDOKOPTOSIS
MycosesandMycotoxicosesASPERGILLOSISASPERGILLUSGRANULOMATOUSDERMATITISAFLATOXICOSISCANDIDIASISFUSARIOTOXICOSES
DeficiencyDiseasesVITAMINB2DEFICIENCYVITAMINBiDEFICIENCYVITAMINEDEFICIENCYFATTYLIVERHAEMORRHAGICSYNDROMESLIPPEDTENDON(PEROSIS)
OtherPULMONARYHYPERTENSION(ASCITIS)SYNDROMEINBROILERCHICKENSAMYLOIDOSISDEEPPECTORALMYOPATHYRUPTUREOFTHEGASTROCNEMIUSTENDONINBROILERBREEDERSCAGELAYERFATIGUEDYSCHONDROPLASIATHYPERKERATOSIS
INFECTIOUSBURSALDISEASE(GUMBORO)
215.Infectious bursal disease (IBD, Gumboro) is an acute, highly contagious viralinfection in chickens manifested by inflammation and subsequent atrophy of thebursa of Fabricius, various degrees of nephrosonephritis and immunosuppression.Clinically the disease is seen only in chickens older than 3 weeks. The feathersaroundtheventareusuallystainedwithfaecescontainingplentyofurates.
216.Theperiodofmostapparentclinicalsymptomsandhighdeathrateisattheageof 3 6 weeks. IBD could however be observed as long as chickens have afunctioning bursa (up to the age of 16weeks). In chickens younger than 3weeks,IBD could be subclinical, but injured bursa leads to immunosuppression. Also,diarrhoea,anorexia,depression,ruffledfeathers,especially intheregionof theheadandtheneckarepresent.
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DiseasesofPoultryByIvanDinev,DVM,PhD
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GOUTHYPERANDROGENISMINBROILERCHICKENSEFFECTOFSTICKYWILLY(GALIUMAPARINE)SEEDSONHEALTHYSTATUSANDPRODUCTIONTRAITSINBROILERCHICKENSGIZZARDIMPACTIONINTURKEYPOULTSROUNDHEARTINTURKEYS(DILATEDCARDIOMYOPATHY)ACUTESELENIUMINTOXICATIONACUTEPROPANEBUTANEINTOXICATIONSPONTANEOUSRUPTUREOFTHECAUDIALRENALARTERYINTURKEYSSUBCUTANEOUSEMPHYSEMAGASTROINTESTINALIMPACTIONMALFORMATIONS
217.Anatural IBD infection ismostlyobserved inchickens. In turkeysandducks itcouldoccursubclinical^,withoutimmunosuppression.MostisolatesoftheIBDvirusin turkeys are serologically different from those in chickens. In premises, oncecontaminatedwith the IBD virus, the disease tends to recur, usually as subclinicalinfection.Thedeadbodiesaredehydrated,oftenwithhaemorrhages in thepectoral,thighandabdominalmuscles.
218.TheIBDvirusbelongstotheBirnaviridaefamilyofRNAviruses.Twoserotypesareknowntoexist,butonlyserotype1ispathogenic.Thevirusishighlyresistanttomost disinfectants and environmental onditions. In contaminated premises, it couldpersist formonthsand inwater, forageandfaecesforweeks.The incubationperiodis short and the first symptoms appear 23 days after infection. The lesions in thebursa of Fabricius are progressive. In the beginning, the bursa is enlarged,oedematousandcoveredwithagelatinoustransudate.
219.IBDvirushasalymphocidiceffectandthemostsevereinjuriesareinthelymphfolliclesofthebursaofFabricius.Mostcommonly,IBDbeginsasaserousbursitis.
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220.221.222.IBD lesions undergo various stages of serous haemorrhagic to severehaemorrhagic inflammation. Themorbidity rate is very high and could reach 100%,whereasthemortalityrate:2030%.Thecourseofthediseaseis57daysandthepeakmortalityoccursinthemiddleofthisperiod.
223.224.In some cases, the bursa is filled with coagulated fibrinous exudate thatusually forms casts with the shape of mucosal folds. In birds surviving the acutestage of the disease, the bursa is progressively atrophying. Microscopically, anatrophy of follicles into the bursa is observed secondary to inflammatory anddystrophicnecrobioticalterations.
225.Thekidneysareaffectedbyasevereuratediathesis. Inanacuteoutbreakand
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manifestation of the typical clinical signs, the diagnostics is not difficult. Thediagnosis could be confirmed by detection of typical gross lesions throughout apathoanatomical study. IBD should be differentiated from IBH (inclusion bodyhepatitis). The application of live vaccines in chickens is a key point in thepreventionofIBDandshouldberelatedtothelevelsofmaternalantibodies.
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