Nematode parasitism in adult dairy cows in Belgium

J Agneessens, E Claerebout, P Dorny, F H Borgsteede, J Vercruysse

    Research output: Contribution to journalA1: Web of Science-article

    Abstract

    Over a period of 1 year, from November 1997 to October 1998, the abomasa, blood and faecal samples of 121 dairy cows in Belgium were collected and examined for nematode infections. Nematodes were present in the abomasa of 110 animals. Ostertagia was found in all 110, Trichostrongylus was seen in 65 and Haemonchus in 14 abomasa. Overall, 91% of all trichostrongyles recovered were Ostertagia. The geometric mean total number of Ostertagia was 2750, with an average of 74% inhibited early fourth stage larvae (EL4). Between November and February >90% of the Ostertagia worm burden were EL4 stages. The majority of the animals (56%) harboured a low Ostertagia burden (100-5000) and 15% had a high burden (>10,000). Sixty-four percent of the coprocultures were positive and the genera recovered were Ostertagia sp. (100%), Trichostrongylus sp. (42%), Oesophagostomum (32%), Haemonchus sp. (29%) and Cooperia sp. (16%). A seasonal pattern was evident for serum Ostertagia-specific antibodies and for serum pepsinogen concentration, with the highest levels during the summer, and low values during the winter. Dictyocaulus viviparus specific antibodies were detected in the serum of eight (7%) animals.

    Original languageEnglish
    JournalVeterinary Parasitology
    Volume90
    Issue number1-2
    Pages (from-to)83-92
    Number of pages10
    ISSN0304-4017
    Publication statusPublished - 10-Jun-2000

    Keywords

    • Animals
    • Belgium
    • Cattle
    • Cattle Diseases
    • Dairying
    • Dictyocaulus
    • Female
    • Haemonchus
    • Ostertagia
    • Parasite Egg Count
    • Prevalence
    • Seasons
    • Trichostrongyloidiasis
    • Trichostrongylus
    • Journal Article
    • Research Support, Non-U.S. Gov't

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