The authors review the development of prevalence of recently occurred diseases in young geese and diseases present long time ago, on the basis of the results of diagnostic examinations in 2000, 2001, 2002 and in the first third of 2003. Characteristic epidemiological data (age, morbidity, mortality), clinical signs, pathological and pathohistological changes are summarised for each diseases. During that period the typical form and the form mainly with enteral signs and changes of Derzsy disease were diagnosed the most frequently. Diseases caused by reovirus, polyomavirus and circovirus were also frequently diagnosed. Tracheobronchitis caused by adenovirus and reticuloendotheliosis were rarely diagnosed. Increase in numbers of polyomavirus and circovirus cases in 2002 and 2003 was interesting. Suspicion of Derzsy disease and of diseases caused by reovirus, polyomavirus and tracheobronchitis caused by adenovirus and reticuloendotheliosis may arise on the basis of clinical signs and pathological lesions. In case of circovirus infection, retard in development and loss of feathers can be seen, mainly at the age of 5-10 weeks. Signs of secondary infections by facultative pathogens (bacteria, fungi) due to changes in lymphoid organs (mainly in bursa Fabricii) and consequent immuno-suppression caused by the virus, are characteristic. Laboratory examinations (recognition of histological changes, detection of the virus and possibly, detection of specific antibodies) ensure exact diagnosis of the diseases in question.
|Translated title of the contribution||Diagnostic experiences and differential diagnosis of viral diseases in young geese|
|Number of pages||9|
|Journal||Magyar Allatorvosok Lapja|
|Publication status||Published - Dec 1 2003|
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