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Opportunities for breeding for disease resistance in British sheep

Published online by Cambridge University Press:  23 November 2017

G.J. Nieuwhof*
Affiliation:
Meat and Livestock Commission, PO Box 44, Winterhill House, Snowdon Drive, Milton Keynes MK6 1AX, UK Roslin Institute, Roslin, Midlothian EH25 9PS, U.K.
S.C. Bishop
Affiliation:
Roslin Institute, Roslin, Midlothian EH25 9PS, U.K.
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Extract

Recently, the costs of eight sheep diseases were calculated by Bennett and IJpelaar (2003). The highest annual costs were estimated for enzootic abortions in ewes (EAE) £20 M and toxoplasmosis £12M. In a survey among its members, the Moredun Foundation (1997) identified internal parasites (GI parasites), sheep scab and footrot as the most important sheep diseases, but these three diseases were not analysed by Bennett and IJpelaar (2003). The aim of this study is to estimate the benefits of reductions in the incidence or severity of these diseases, using the methodology of Bennett et al. (1999), and the benefits of reductions in disease incidence or severity. From this, marginal economic values for resistance are calculated and applied in selection index scenarios that mimic current sheep breeding schemes.

Type
Theatre Presentations
Copyright
Copyright © The British Society of Animal Science 2005

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References

Bennett, R.M., Christansen, K. and Clifton-Hadley, R.S. 1999. Modelling the impact of livestock disease on production: case studies of non-notifiable diseases of farm animals in Great Britain. Animal Science 68: 681689.CrossRefGoogle Scholar
Bennett, R.M. and IJpelaar, A.C.E. 2003. Economic assessment of livestock diseases in Great Britain. Report to Defra.Google Scholar
Moredun Foundation. 1997. Untitled. Summarised in Sheep Health Matters MLC Sheep Management Matters Leaflet No. 4. MLC, Milton Keynes.Google Scholar