The rate of spread of sheep scab within small groups of Merino and Dorper sheep.
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.
Meintjes
T
T
Department of Zoology and Entomology, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa.
Fourie
L J
LJ
Horak
I G
IG
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