The rate of spread of sheep scab within small groups of Merino and Dorper sheep |
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| Authors: | Meintjes T Fourie L J Horak I G |
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| Institution: | Department of Zoology and Entomology, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa. |
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| Abstract: | A single Merino sheep, artificially infested with the sheep scab mite, Psoroptes ovis, and a similarly infested Dorper sheep were placed with 9 uninfested Merino or 9 uninfested Dorper sheep respectively during winter and the rate of spread of infestation on the uninfested sheep observed. The same procedure was repeated in summer. It took 14 and 8 weeks respectively in winter before all sheep in the 2 groups displayed lesions of sheep scab, whereas in summer it took 10 and 12 weeks before all sheep had lesions. |
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