Nematode parasites of adult dairy cattle in the Netherlands

F.H.M. Borgsteede, J. Tibben, J.B.W.J. Cornelissen, J. Agneessens, C.P.H. Gaasenbeek

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    Abomasa, blood samples and faecal samples for examination of nematode infections were collected from 125 dairy cows during the period November 1997-October 1998. Of these, 12 had no grazing history and were, therefore, excluded from this study. From the remaining 113, 88.5% had nematode eggs in the faeces. Larval identification of the positive cultures showed that Ostertagia spp. larvae were most frequent (97%), followed by Trichostrongylus spp. (29%), Oesophagostomum spp. (23%), Cooperia punctata (20%), Cooperia oncophora (4%), Haemonchus contortus (2%) and Bunostomum phlebotomum (1%). The geometric mean EPG was 2.4. Two cows excreted larvae of Dictyocaulus viviparus (0.1 and 0.6 LPG resp.). Worms were found in the abomasa of 108 cows (96%). In all these abomasa Ostertagia spp. was present (100%). Trichostrongylus axei was found in 47 abomasa (43.5%) and two cows (2%) were infected with Capillaria bovis. The geometric mean of the total abomasal worm counts was 1743 and of Ostertagia spp. alone 1615. Almost all male worms were Ostertagia ostertagi, only occasionally Skrjabinagia lyrata was found. Early fourth larval stages (EL-4) were particularly present during the winter months: maximum in December (91.7%) and lowest in October (3.3%). Worm burdens were highest in young cows (<3 years) and older cows (>10 years). The highest individual abomasal worm count was 99,800 with 86% EL-4. Eighty-six cows (76%) had a low to moderate (100-10,000) and 22 cows (20%) a high (>10,000) total worm burden.Ostertagia specific antibodies were highest in late summer and autumn and lowest in spring and early summer. The same pattern, although not so pronounced, was observed for the serum pepsinogen values. No clear seasonal pattern was found for the Cooperia specific antibodies. Antibodies against D. viviparus were detected in seven cows (6%). Copyright (C) 2000 Elsevier Science B.V.
    Original languageEnglish
    Pages (from-to)287-296
    JournalVeterinary Parasitology
    Issue number4
    Publication statusPublished - 2000

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