LARYNGOTRACHEITIS - Diseases of Poultry - The Poultry Site
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11/03/2015 LARYNGOTRACHEITIS Diseases of Poultry The Poultry Site http://www.thepoultrysite.com/publications/6/diseasesofpoultry/196/laryngotracheitis 1/2 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 LARYNGOTRACHEITIS 232.Laryngotracheitis (LT) is a viral infection in hens, pheasants and peacocks characterized by catarrhal haemorrhagic to fibrinous inflammation of the respiratory tract. It is manifested in laryngotracheal and conjunctival form. In the laryngotracheal form, suffocation, rales and cough are observed. The head and the neck are strongly extended forward and upward during inspiration. 233.mucous coats of the larynx and the trachea are catarrhally haemorrhagically to fibrinously inflamed. Most outbreaks are encountered between the age of 4 and 14 weeks although the disease affects fowl of any age. LT is caused by a herpesvirus that is relatively resistant. 234.Haemorrhagic laryngotracheitis. The morbidity rate of LT reaches 5070% and the death rate: 1020%. Often, it goes on as a complicated infection after the involvement of E. coli, St. aureus, M. gallisepticum etc. Our Sponsors Partners Petersime HyLine International Pas Reform AB Vista Jansen Poultry Equipment Halamid Vencomatic Group CID LINES Biomin ECO Animal Health rl consulting 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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LARYNGOTRACHEITIS
Transcript of LARYNGOTRACHEITIS - Diseases of Poultry - The Poultry Site
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11/03/2015 LARYNGOTRACHEITISDiseasesofPoultryThePoultrySite
http://www.thepoultrysite.com/publications/6/diseasesofpoultry/196/laryngotracheitis 1/2
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BacterialDiseasesESCHERICHIACOLIINFECTIONSSALMONELLOSESPARATYPHOIDINFECTIONSFOWLCHOLERARIEMERELLAANATIPESTIFERINFECTIONSMYCOPLASMANECROTICENTERITISCHOLANGIOHEPATITISINBROILERCHICKENSGANGRENOUSDERMATITISBOTULISMAVIANTUBERCULOSIS
ViralDiseasesVIRALINCLUSIONBODYHEPATITISHAEMORRHAGICENTERITISOFTURKEYSEGGDROPSYNDROME1976ADENOVIRUSGROUPIASSOCIATEDINFECTIONSINFECTIOUSBURSALDISEASE(GUMBORO)INFECTIOUSBRONCHITIS(IB)LARYNGOTRACHEITISSWOLLENHEADSYNDROMEINFECTIOUSENCEPHALOMYELITISNEWCASTLEDISEASEFOWLPOXREOVIRUSINFECTIONS
NeoplasticDiseasesinPoultryVIRUSINDUCEDNEOPLASTICDISEASESMAREK'SDISEASELYMPHOIDLEUKOSISMYELOCYTOMATOSISERYTHROBLASTOSISADENOCARCINOMATOSIS
ParasiticDiseasesCOCCIDIOSISHISTOMONOSISASCARIDIOSISRAILLIETINOSISKNEMIDOKOPTOSIS
MycosesandMycotoxicosesASPERGILLOSISASPERGILLUSGRANULOMATOUSDERMATITISAFLATOXICOSISCANDIDIASISFUSARIOTOXICOSES
DeficiencyDiseasesVITAMINB2DEFICIENCYVITAMINBiDEFICIENCYVITAMINEDEFICIENCYFATTYLIVERHAEMORRHAGICSYNDROMESLIPPEDTENDON(PEROSIS)
OtherPULMONARYHYPERTENSION(ASCITIS)SYNDROMEINBROILERCHICKENSAMYLOIDOSISDEEPPECTORALMYOPATHYRUPTUREOFTHEGASTROCNEMIUSTENDONINBROILERBREEDERSCAGELAYERFATIGUEDYSCHONDROPLASIATHYPERKERATOSIS
LARYNGOTRACHEITIS
232.Laryngotracheitis (LT) is a viral infection in hens, pheasants and peacockscharacterized by catarrhal haemorrhagic to fibrinous inflammation of the respiratorytract.Itismanifestedinlaryngotrachealandconjunctivalform.Inthelaryngotrachealform,suffocation,ralesandcoughareobserved.Theheadandtheneckarestronglyextendedforwardandupwardduringinspiration.
233.mucouscoatsof the larynxand the tracheaare catarrhally haemorrhagically tofibrinously inflamed.Most outbreaks are encountered between the age of 4 and 14weeksalthough thediseaseaffects fowlofanyage.LT iscausedbyaherpesvirusthatisrelativelyresistant.
234.Haemorrhagic laryngotracheitis. The morbidity rate of LT reaches 5070% andthe death rate: 1020%. Often, it goes on as a complicated infection after theinvolvementofE.coli,St.aureus,M.gallisepticumetc.
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DiseasesofPoultryByIvanDinev,DVM,PhD
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11/03/2015 LARYNGOTRACHEITISDiseasesofPoultryThePoultrySite
http://www.thepoultrysite.com/publications/6/diseasesofpoultry/196/laryngotracheitis 2/2
GOUTHYPERANDROGENISMINBROILERCHICKENSEFFECTOFSTICKYWILLY(GALIUMAPARINE)SEEDSONHEALTHYSTATUSANDPRODUCTIONTRAITSINBROILERCHICKENSGIZZARDIMPACTIONINTURKEYPOULTSROUNDHEARTINTURKEYS(DILATEDCARDIOMYOPATHY)ACUTESELENIUMINTOXICATIONACUTEPROPANEBUTANEINTOXICATIONSPONTANEOUSRUPTUREOFTHECAUDIALRENALARTERYINTURKEYSSUBCUTANEOUSEMPHYSEMAGASTROINTESTINALIMPACTIONMALFORMATIONS
235.Insomecases,castsofhaemorrhagicorfibrinousexudateareformedthatcouldalmost completely obturate the larynx and the trachea. Source of the infection aresickandconvalescentbirds,thelatterbeingprolongedcarriersofthevirus(upto12years).Withthisregard,acertainstationarityisobserved.
236.In the conjunctival form of LT, wet eyes, tear secretion and oedema ofinfraorbital sinuses are observed, especially in a complicated infection. The typicalclinical andmorphological signs are sufficient to assume the presence of LT. Thediagnosis is confirmed with the detection of intranuclear inclusion bodies in thetrachea throughout the histological study in the early stages of the disease,serological studies (VN, ELISA) etc. LT should be differentiated from IB, SHS,M.synoviae infections etc. Premises, contamined with the LT virus, should be freed,cleansed, disinfected and occupied again after 5 6 weeks. The vaccination ofunaffectedbirdsandthesefromotherpremisesoftheinfectedfarmcouldprotectandstopsubsequentoutbreaks.
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