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Onchocerca Gutturosa in Danish Cattle

Onchocerca gutturosa i dansk kvæg. Prævalens, geografisk udbredelse og vektor-værtsforhold

Prevalence, Geographic Distribution and Host-Vector Relationships

Acta Veterinaria Scandinavica volume 16, pages 1–13 (1975)Cite this article

Abstract

  1. 1.

    Onchocerca gutturosa is reported in Danish cattle for the first time. Microfilariae were found in 38 (9.4%) of 406 cows that were 2 years or older.

  2. 2.

    Microfilariae were not randomly distributed throughout the skin but were concentrated in the umbilical area.

  3. 3.

    No difference in prevalence was observed between breeds of cattle.

  4. 4.

    Most of the infected cows had grazed on fields close to streams that contained Simulium ornatum, the vector of O. gutturosa.

  5. 5.

    Differences in preferred biting sites of S. ornatum from cow to cow were correlated with the arrangement of hair.

Sammendrag

  1. 1.

    Onchocerca gutturosa er for første gang beskrevet i dansk kvæg. Mikrofilarier blev fundet i 38 (9,4% ) af 406 undersøgte køer i alderen over 2 år.

  2. 2.

    Mikrofilarierne var ikke jævnt fordelt i huden af køerne, men var koncentreret i navleområdet.

  3. 3.

    Der kunne ikke konstateres forskelle i infektionsfrekvensen mellem de forskellige kvægracer.

  4. 4.

    De fleste inficerede køer havde græsset på marker tæt ved åer, som indeholdt larver af kvægmyggen Simulium ornatum, vektoren for O. gutturosa.

  5. 5.

    Forskelle i kvægmyggenes foretrukne bidesteder kunne forklares ved hårenes arrangement.

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Authors and Affiliations

  1. Parasitological Research Group of the Danish Agricultural and Veterinary Research Council, Institute of Internal Medicine, Royal Veterinary and Agricultural University, Bülowsvej 13, DK-1870, Copenhagen V, Denmark

    Nils Kolstrup

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  1. Nils Kolstrup
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Part of this work was conducted as a thesis for the cand. scient. exam. at the University of Copenhagen, Denmark.

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Kolstrup, N. Onchocerca Gutturosa in Danish Cattle. Acta Vet Scand 16, 1–13 (1975). https://doi.org/10.1186/BF03546690

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Acta Veterinaria Scandinavica

ISSN: 1751-0147