PATHOLOGY OF CARDIO-PULMONARY AND RENAL AFFECTIONS IN DUCKS AND SCREENING FOR ASSOCIATED VIRUSES

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dc.contributor.advisorPradeep M
dc.contributor.authorANAGHA A M
dc.date.accessioned2023-03-21T10:38:10Z
dc.date.available2023-03-21T10:38:10Z
dc.date.issued2022-02-25
dc.descriptionSubmitted in partial fulfillment of the requirement for the degree of MASTER OF VETERINARY SCIENCE in Veterinary Pathologyen_US
dc.description.abstractThe present study entitled “Pathology of cardio-pulmonary and renal affections in ducks and screening for associated viruses focused on systematic recording of gross and histopathological changes in heart lungs and kidneys and screening for MDPV, DAdV-1 and ANV. A detailed post mortem examination of 119 duck carcasses was carried out, gross lesions noted and representative samples were collected from heart, lungs and kidneys for histopathology and molecular screening. Gross lung/airsac lesions were observed in 31.09 per cent carcasses and the lesion varied from cloudy airsacs, nodules in air sacs, congestion, consolidation and nodules in lungs. Microscopically lung showed varying degrees of mononuclear cell infiltration and vascular changes. Gross lesions in heart were observed in 20.16 per cent of duck carcasses and the lesion varied from deposition of white material on pericardium, pale discolouration of cardiac muscles, rounding of heart and ventricular hypertrophy. Microscopic lesions included fibrinous pericarditis, myocardial degeneration, epicardial thickening, myocardial fibrosis, microcapillary dilatation and myocardial hemorrhage. Gross lesions in kidneys were congestion, deposition white material, atrophy and enlargement of kidneys. Microscopic lesions in kidneys were associated with glomeruli, tubules, interstitium and vascular changes. Sclerotic changes in kidneys were graded based on extend of fibrous tissue proliferation in Masson trichrome stained sections.A grading system for chronic changes in kidneys based on Masson trichrome staining was carried out for the first time in birds. Grading of lung inflammatory lesions were also made. Adult ducks reared under intensive system showed more chronic changes compared to ducks reared in backyard system which showed more of acute lesions.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810195617
dc.keywordsPATHOLOGY OF CARDIO-PULMONARY, RENAL AFFECTIONS IN DUCKS , LESIONS OF LUNGS, Gross lesions , Microscopic lesions, LESIONS OF HEART, LESIONS OF KIDNEYS, DUCK ADENOVIRUS -1 (DAdV-1), Virion properties, Epidemiology, MUSCOVY DUCK PARVO VIRUS (MDPV, AVIAN NEPHRITIS VIRUS (ANV) , Vascular changes in lungs , CARDIAC MICROSCOPIC LESIONS, PULMONARY LESIONS , Mononuclear cell aggregation in the parabronchi,en_US
dc.language.isoEnglishen_US
dc.pages91 p.en_US
dc.publisherCOLLEGE OF VETERINARY AND ANIMAL SCIENCES POOKODE, WAYANADen_US
dc.research.problemEvaluation of gross and histopathological lesions in heart, lungs and kidneys of ducks , Screening for Muscovy duck parvovirus (MDPV), Duck adenovirus 1 (DAdV-1) and Avian nephritis virus (ANV) using polymerase chain reaction (PCR)/ reverse transcription polymerase chain reaction (RT- PCR)en_US
dc.subVeterinary Pathologyen_US
dc.themeCARDIO-PULMONARY AND RENAL AFFECTIONS IN DUCKS AND SCREENING FOR ASSOCIATED VIRUSESen_US
dc.these.typeM.V.Sc.en_US
dc.titlePATHOLOGY OF CARDIO-PULMONARY AND RENAL AFFECTIONS IN DUCKS AND SCREENING FOR ASSOCIATED VIRUSESen_US
dc.typeThesisen_US
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