Diagnostic studies of abortion in Danish dairy herds

J.S. Agerholm, C. M. Willadsen, Thomas Krogh Nielsen, Steen Bjørck Giese, Elisabeth Holm, L. Jensen, J. F. Agger

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    Diagnostic findings in 218 aborted bovine foetuses are reported. The materials were examined in a matched case-control study of 69 Danish dairy herds with a sudden increase in the number of abortions and a corresponding 69 control herds. Foetuses aborted during the subsequent 6-month period were examined to identify the cause of abortion if possible. A total of 186 specimens were submitted from case herds and 32 from control herds. A likely cause of abortion was diagnosed in 73 foetuses. The most common cause was bovine viral diarrhoea virus (BVDV: 13%) followed by Neospora caninum infection (10%), mycosis (5%) and Bacillus licheniformis infection (4%). Foetal and/or placental lesions were found in a further 27 cases. Only BVDV infection and neosporosis were diagnosed in more than one foetus per herd and only protozoal associated abortions occurred significantly more frequently in the case, rather than in the control, herds.
    Original languageEnglish
    JournalJournal of Veterinary Medicine Series A-physiology Pathology Clinical Medicine
    Issue number9-10
    Pages (from-to)551-558
    Publication statusPublished - 1997


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