Detection of Antibody to <I>Neospora caninum</I> and Pathology of Aborted Fetuses in a Bovine Farm with Multiple Incidences of Abortion and Stillbirth

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  • 牛の流死産多発農場における<I>Neospora caninum</I>抗体保有率と流産胎子の病変
  • 牛の流死産多発農場におけるNeospora caninum抗体保有率と流産胎子の病変
  • ウシ ノ リュウ シザン タハツ ノウジョウ ニ オケル Neospora c
  • Detection of Antibody to Neospora caninum and Pathology of Aborted Fetuses in a Bovine Farm with Multiple Incidences of Abortion and Stillbirth

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Abstract

In a farm with multiple incidences of abortion and stillbirth (above 20%), antibody to Neospora caninum was detected by indirect immunofluorescence in 14 of 17 (82.2%) cows that had recent abortion, 10 of 18 (55.6%) cows without abortion, 3 of 6 calves, and 1 of 3 aborted fetuses. Relapsing abortions occurred in 7 of 14 (50%) seropositive cows, while 23 of 100 (23%) were seropositive without abortion. Aborted fetuses from the seropositive cows had non-purulent encephalitis, myocarditis and skeltal myositis, and N. caninum tachyzoites were immunohistochemically detectable in the lesions of 7 of 10 fetuses examined.

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