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Title: Estimating genetic merit when genotype data are incomplete
Contributor(s): Tier, Bruce  (author); Bunter, Kim Louise  (author)
Publication Date: 2003
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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.
Publication Type: Conference Publication
Conference Details: 15th Conference of the Association for the Advancement of Animal Breeding and Genetics, Melbourne, Australia, 7-11 July, 2003
Source of Publication: Proceedings of the 15th Conference of the Association for the Advancement of Animal Breeding and Genetics, p. 214-217
Publisher: AAABG: Association for the Advancement of Animal Breeding and Genetics
Place of Publication: Melbourne, VIC, Australia
ISSN: 1328-3227
Field of Research (FOR): 070201 Animal Breeding
Socio-Economic Objective (SEO): 830308 Pigs
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
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Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
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