NR AIFP
AU Mclean,A.R.; Hoek,A.; Hoinville,L.J.; Gravenor,M.B.
TI Scrapie transmission in Britain: a recipe for a mathematical model
QU Proceedings of the Royal Society B: Biological Sciences 1999 Dec 22; 266(1437): 2531-8
PT journal article
AB Responses to an anonymous postal survey concerning scrapie are analysed. Risk factors associated with farms that have had scrapie are identified as size, geographical region, lambing practices and holding of certain breeds. Further analysis of farms that have scrapie only in bought-in animals reveals that such farms tend to breed a smaller proportion of their replacement animals than farms without scrapie. Farms that have had scrapie in home-bred animals have attributes associated with breeding many animals: large numbers of rams bought, few ewes bought, and many animals that are home-bred. The demography of British sheep farms as described by size, breeds, purchasing behaviour, age structure and proportion of animals that are home-bred is summarized. British farms with scrapie reveal certain special features: they have more sheep that are found dead, more elderly ewes and more cases of scab.
MH Animal; Great Britain/epidemiology; Mathematical Computing; *Models, Biological; Risk Factors; Scrapie/epidemiology/*transmission; Sheep; Support, Non-U.S. Gov't
AD lnstitute for Animal Health, Newbury, Berkshire, UK. angela.mclean@bbsrc.ac.uk
SP englisch
PO England