Summer eczema in exported Icelandic horses: influence of environmental and genetic factors

Abstract A cross sectional study was designed to estimate the prevalence of summer eczema (a chronic, recurrent seasonal dermatitis) in exported Icelandic horses and the influence of environmental and genetic factors on the development of the disease. Among 330 horses, which had been exported to Ger...

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Bibliographic Details
Published in:Acta Veterinaria Scandinavica
Main Authors: Björnsdóttir Sigríður, Sigvaldadóttir Jakobína, Broström Hans, Langvad Birgitte, Sigurðsson Ágúst
Format: Article in Journal/Newspaper
Language:English
Published: BMC 2006
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Online Access:https://doi.org/10.1186/1751-0147-1-3
https://doaj.org/article/9c03b57adaac4da09fc8c0f4767ab014
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Summary:Abstract A cross sectional study was designed to estimate the prevalence of summer eczema (a chronic, recurrent seasonal dermatitis) in exported Icelandic horses and the influence of environmental and genetic factors on the development of the disease. Among 330 horses, which had been exported to Germany, Denmark and Sweden, 114 (34.5%) were found to have clinical signs of summer eczema. The prevalence was highest 2 years after export and the exposure to the biting midges Culicoides spp ., was found to be the main risk factor for developing the disease. Genetic influence on the sensitivity for the disease was not established. It was concluded that exported Icelandic horses are predisposed for summer dermatitis and the fact that they are not introduced to the antigens of the biting midges early in live, due to it's absence in Iceland, is likely to explain the high prevalence of the disease after export.