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  • Title: The incidence of Chorioptes bovis (Acarina: Psoroptidae) on the feet of horses, sheep, and goats in the Netherlands.
    Author: Cremers HJ.
    Journal: Vet Q; 1985 Oct; 7(4):283-9. PubMed ID: 4071949.
    Abstract:
    The feet of horses, sheep, and goats of different breeds and from many different localities were examined for Chorioptes bovis. In horses, mites were mainly found in the Belgian and Frisian breeds (40% and 62% infected, respectively). In sheep and goats, respectively 63% and 86% were infected. In horses as well as in sheep and goats, mange-lesions were rarely seen. A number of sheep and goats were examined for mites and lesions quantitatively. In sheep all mites were restricted to the region close to the accessory digits and the claws. In goats the average number of mites was higher than in sheep, and mites could be found on all locations of the feet at least as far as the carpal and tarsal joint. Both in sheep and goats the biggest density of mites was found just below the accessory digits. When crusts were present, they were generally small and hidden under the coat. In sheep, which were housed for a long period, crusts were seen more often and were more distinct than in pastured animals. A negative correlation between the number of mites and the presence and extensiveness of crusts was observed. A possible explanation for this phenomenon is suggested. From the results of this study it is clear that there is no necessity to list chorioptic mange in sheep and goats as a notifiable disease.
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