Pathology of goose haemorrhagic polyomavirus infection in goose embryos

Sándor Bernáth, Attila Farsang, Andrea Kovács, Edith Nagy, Mihály Dobos-Kovács

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Abstract

Goose embryos were infected with goose haemorrhagic polyomavirus (GHPV) onto the chorioallantoic membrane (CAM) in order to examine the effect of GHPV on the embryos and to obtain data on whether embryos could develop into infected, virus-shedding goslings, as well as to present an accurate biological method for virus titration. The reported method of infection could offer a possibility to express the virus titre as the median embryo infective dose (EID50). As a special pathological feature of the disease, extensive cerebral haemorrhages were observed, which protruded the skullcap in many cases. Some embryos infected with 101.25 or 100.25 EID 50/0.2 ml were able to hatch; however, they were in poor physical condition and died by post-hatching day 4 showing haemorrhagic nephritis and enteritis of geese. Virus shedding was revealed by polymerase chain reaction. The ability of some of the infected goose embryos to hatch may indicate the potency of GHPV to spread vertically, although this needs further study for confirmation.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalAvian Pathology
Volume35
Issue number1
DOIs
Publication statusPublished - Feb 2006

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ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology
  • Immunology and Microbiology(all)

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