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https://hdl.handle.net/1959.11/4553
Title: | Sampling behaviour of reduced rank estimates of genetic covariance functions | Contributor(s): | Meyer, Karin (author) | Publication Date: | 2005 | Handle Link: | https://hdl.handle.net/1959.11/4553 | Abstract: | A simulation study investigating relative errors and sampling variances of reduced rank estimates of genetic covariance functions from random regression analyses estimating the leading principal components only, is presented. The example considered pertains to covariance functions for growth of beef cattle. It is demonstrated that the leading principal components are estimated most accurately, and that reduced rank estimates yield estimates of covariance functions with similar errors than full rank estimates. Furthermore, it is shown that substantial repartitioning between genetic and permanent environmental covariances can occur if either is modelled with too few principal components. Results emphasize the need for a judicious choice among the possible combinations of rank of fit for different ovariance functions. | Publication Type: | Conference Publication | Conference Details: | AAABG 2005: 16th Conference of the Association for the Advancement of Animal Breeding and Genetics, Noosa Lakes, Australia, 25th - 28th September, 2005 | Source of Publication: | Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.16, p. 286-289 | Place of Publication: | Collingwood, Australia | ISSN: | 1328-3227 | Fields of Research (FoR) 2008: | 070201 Animal Breeding | Socio-Economic Objective (SEO) 2008: | 830301 Beef Cattle | Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | http://www.aaabg.org/livestocklibrary/2005/286meyer.pdf http://trove.nla.gov.au/work/13321110 |
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Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
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