Scrapie transmission in Britain: a recipe for a mathematical model

被引：53
作者：
McLean, AR [1 ]
Hoek, A
Hoinville, LJ
Gravenor, MB
机构：
[1] AFRC, Inst Anim Hlth, Newbury RG20 7NN, Berks, England
[2] Vet Labs Agcy, Weybridge KT15 3NB, Surrey, England
来源：
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | 1999年 / 266卷 / 1437期
关键词：
scrapie; epidemiology; transmission dynamics; sheep demography; mathematical model;
D O I：
10.1098/rspb.1999.0956
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
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收藏
页码：2531 / 2538
页数：8
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