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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)
Abstract
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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.
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2.
Microfilariae were not randomly distributed throughout the skin but were concentrated in the umbilical area.
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3.
No difference in prevalence was observed between breeds of cattle.
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4.
Most of the infected cows had grazed on fields close to streams that contained Simulium ornatum, the vector of O. gutturosa.
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5.
Differences in preferred biting sites of S. ornatum from cow to cow were correlated with the arrangement of hair.
Sammendrag
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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.
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2.
Mikrofilarierne var ikke jævnt fordelt i huden af køerne, men var koncentreret i navleområdet.
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3.
Der kunne ikke konstateres forskelle i infektionsfrekvensen mellem de forskellige kvægracer.
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4.
De fleste inficerede køer havde græsset på marker tæt ved åer, som indeholdt larver af kvægmyggen Simulium ornatum, vektoren for O. gutturosa.
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5.
Forskelle i kvægmyggenes foretrukne bidesteder kunne forklares ved hårenes arrangement.
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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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DOI: https://doi.org/10.1186/BF03546690