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Marker assisted selection in livestock

Published online by Cambridge University Press:  05 November 2021

P.M. Visscher ,
S. Van der Beek  and
C.S. Haley
P.M. Visscher
Affiliation:
Institute of Ecology and Resource Management, University of Edinburgh, West Mains Road, Edinburgh EH9 3JG
S. Van der Beek
Affiliation:
Department of Animal Breeding, Wageningen Agricultural University, Wageningen, Holland The Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS
C.S. Haley
Affiliation:
The Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS
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Extract

With the rapid development of genome maps of livestock, many genetic markers are becoming available. These markers usually have no affect on animals in their own right, their value is that they allow the inheritance of sections of chromosome to be followed in suitable pedigrees. How then may genetic markers be used in livestock breeding? It is useful to distinguish the use of markers in selection programmes within breeds and crossbreeding programmes. Furthermore, for both types of breeding programmes there are different kinds of information that can be provided by markers. Genetic markers may be linked to major genes, or in some cases we may have a direct test for a mutation which causes a major difference in animal performance or phenotype. Alternatively, we may have markers which are linked to (unknown) quantitative trait loci (QTLs), i.e. loci which influence traits such as growth, milk yield, carcass quality and litter size.

Type
Molecular Genetic Markers in Livestock Breeding
Information
Proceedings of the British Society of Animal Science , Volume 1996 , March 1996 , pp. 52
Copyright
Copyright © The British Society of Animal Science 1996

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References

Meuwissen, T.H.E., and Van Arendonk, J.A.M. (1992) Potential improvements in rate of genetic gain from marker-assisted selection in dairy cattle breeding schemes. Journal of Dairy Science 75, 1651–1659.10.3168/jds.S0022-0302(92)77922-3CrossRefGoogle ScholarPubMed
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Van der Beek, S., Haley, C.S., and Visscher, P.M. (1996). Marker assisted selection and linkage disequilibrium. In preparation. Google Scholar