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Sources of information for estimating heritability from selection experiments

Published online by Cambridge University Press:  14 April 2009

R. Thompson  and
K. D. Atkins
R. Thompson*
Affiliation:
A.F.R.C. Roslin Institute (Edinburgh), Roslin, Midlothian, EH25 9PS, Scotland
K. D. Atkins
Affiliation:
NSW Agriculture, Agricultural Research & Veterinary Centre, Orange, Australia
*
† Corresponding author.
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Summary

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Maximum likelihood estimation methods with an individual animal model were used to analyse a bi-directional selection experiment, with control, for cannon bone length in Scottish Blackface sheep. A method is described for partitioning the likelihood to allow within- and between-line estimates of genetic variance. It is concluded that both sources of information made substantial contributions to the precision of the base population heritability estimate. The implications for different experimental designs and varying heritability are discussed.

Type
Research Article
Information
Genetics Research , Volume 63 , Issue 1 , February 1994 , pp. 49 - 55
Copyright
Copyright © Cambridge University Press 1994

References

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