Estimating genetic merit when genotype data are incomplete

Title
Estimating genetic merit when genotype data are incomplete
Publication Date
2003
Author(s)
Tier, Bruce
Bunter, Kim Louise
Editor
Editor(s): Abigail Henderson
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
Association for the Advancement of Animal Breeding and Genetics (AAABG)
Place of publication
Armidale, Australia
UNE publication id
une:4454
Abstract
Direct markers for QTL are becoming available and, for traits that are difficult to measure or observed later in life, offer the potential to increase the accuracy of EBVs. While genotyping costs are non-trivial, QTL information will not be available for all individuals - with important consequences for genetic evaluation systems. Using simulated populations in which all parents and some progeny are genotyped for a QTL acting additively, two methods of using genotypic information are compared with EBVs based on the infintessimal model. Both methods - deregressing EBVs for the QTL effect according to their accuracy, or using heterogeneous residual variances - improve correlations between simulated and estimated genetic merit, particularly for individuals without performance data.
Link
Citation
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.15, p. 214-217
ISSN
1328-3227
ISBN
0958629927
Start page
214
End page
217

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