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    An unusual outbreak of histomonosis in a commercial turkey flock (2012)

    Art
    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Autoren
    Popp, Christina
    Hauck, Rüdiger (WE 15)
    Blazey, Birgit
    Hänel, Andreas
    Hafez, Hafez Mohamed (WE 15)
    Quelle
    Berliner und Münchener tierärztliche Wochenschrift; 125(3/4) — S. 153–158
    ISSN: 0005-9366
    Sprache
    Englisch
    Verweise
    Pubmed: 22515034
    Kontakt
    Institut für Geflügelkrankheiten

    Königsweg 63
    14163 Berlin
    Tel.+49 30 838 62676 Fax.+49 30 838 62690
    email:gefluegelkrankheiten@vetmed.fu-berlin

    Abstract / Zusammenfassung

    In the past histomonosis was very well controlled with Dimetridazole as a treatment and/or Nifursol as feed additive. In the European Union both products were banned in 1995 and 2003, respectively. This was followed by the re-emergence of the disease in the recent years. In the present case a farm with two houses was affected by the disease. In each house 2620 hens and 2620 toms were kept, separated by wire mesh. At the 53rd day of age the toms in house 1 showed general clinical symptoms, accompanied by a slightly raised mortality, which sharply increased in the following days. At necropsy all dead birds showed lesions typical for histomonosis in caeca and liver. Histomonosis was diagnosed by histopathology and PCR. Within five days cumulative mortality was 25.1%.The hens kept at the same house didn't show any symptoms. At day 57 two toms, which were kept in house 2, died and showed similar symptoms and lesions. Within the next three days 48 more birds died. Again the hens in house 2 showed neither clinical signs nor mortality. Treatment trials using herbal products and a change of litter directly after the onset of clinical signs did not reduce the mortality. On day 62 the toms of both houses were euthanized by CO2 in closed containers. The hens were kept until they were slaughtered in week 16 and did not show any evidence of histomonosis.