title: The rate of spread of sheep scab within small groups of Merino and Dorper sheep.
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.
authors.affiliation: Department of Zoology and Entomology, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa.
authors.forename: T
authors.initials: T
authors.lastname: Meintjes
authors.forename: L J
authors.initials: LJ
authors.lastname: Fourie
authors.forename: I G
authors.initials: IG
authors.lastname: Horak
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D008924:Mite Infestations / Q000635:transmission / Q000662:veterinary*; D040042:Psoroptidae / Q000254:growth & development; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000635:transmission*; D013997:Time Factors