Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/5247
Title: | Cheverud revisited: Scope for joint modelling of genetic and environmental covariance matrices | Contributor(s): | Meyer, Karin (author); Kirkpatrick, Mark (author) | Publication Date: | 2009 | Handle Link: | https://hdl.handle.net/1959.11/5247 | Abstract: | Multivariate estimation fitting a common structure to estimates of genetic and environmental covariance matrices is examined in a simple simulation study. It is shown that such parsimonious estimation can considerably reduce sampling variation. However, if the assumption of similarity in structure does not hold at least approximately, bias in estimates of the genetic covariance matrix can be substantial. For small samples and more than a few traits, structured estimation is likely to reduce mean square error even if bias is quite large. Hence such models should be used cautiously. | Publication Type: | Conference Publication | Conference Details: | AAABG 2009: 18th Conference of the Association for the Advancement of Animal Breeding and Genetics, Barossa Valley, Australia, 27th September - 1st October, 2009 | Source of Publication: | Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.18, p. 438-441 | Publisher: | Association for the Advancement of Animal Breeding and Genetics (AAABG) | Place of Publication: | Armidale, Australia | ISSN: | 1328-3227 | Fields of Research (FoR) 2008: | 010401 Applied Statistics 070201 Animal Breeding 060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics) |
Socio-Economic Objective (SEO) 2008: | 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences 970106 Expanding Knowledge in the Biological Sciences |
Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | http://trove.nla.gov.au/work/36420775 http://www.aaabg.org/proceedings18/files/meyer438.pdf http://aaabg.org/aaabg18/ |
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Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
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