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In silico investigation of the effect of nutrition on the estimates of genetic parameters for lambs infected with gastro-intestinal parasites

Published online by Cambridge University Press:  23 November 2017

A. B. Doeschl-Wilson ,
D. Vagenas ,
S.C. Bishop  and
I. Kyriazakis
A. B. Doeschl-Wilson*
Affiliation:
Scottish Agricultural College, Penicuik, Midlothian, United Kingdom
D. Vagenas
Affiliation:
Scottish Agricultural College, Penicuik, Midlothian, United Kingdom
S.C. Bishop
Affiliation:
Roslin Institute, Roslin, Midlothian, United Kingdom
I. Kyriazakis
Affiliation:
Scottish Agricultural College, Penicuik, Midlothian, United Kingdom
*
Email:andrea.wilson@sac.ac.uk
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Extract

In recent years there has been an increased interest for breeding lambs resistant to gastrointestinal parasites due to the reduced efficacy of anthelminthics. Furthermore, protein supplementation alleviates the adverse effects of parasitism since more protein is available for the satisfaction of the competing body functions of growth and resistance to parasites. Therefore, differences in dietary protein might result in the expression of genotype x environment interaction. Additionally the estimates of genetic and phenotypic correlations obtained from populations kept under different nutritional conditions might differ with implications for the breeding programmes. The aim here is to explore the effect of dietary protein level on the estimates of genetic and phenotypic correlations of a population of growing lambs infected with gastrointestinal parasites using a simulation model.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 89
Copyright
Copyright © The British Society of Animal Science 2007

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References

Bishop, S.C., and Stear, M.J. (1999). Genetic and epidemiological relationships between productivity and disease resistance: gastro-intestinal parasite infection in growing lambs. Anima. Science 69, 515–524 Google Scholar
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Vagenas, D., Bishop, S.C. and Kyriazakis, I. (2007). A model to account for the consequences of host nutrition on the outcome of gastrointestinal parasitism in sheep: logic and concepts. Parasitology (In press)CrossRefGoogle Scholar