Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/4536
Title: | Reduced rank estimates of the genetic covariance matrix for live ultra-sound scan traits | Contributor(s): | Meyer, Karin (author) | Publication Date: | 2005 | Handle Link: | https://hdl.handle.net/1959.11/4536 | Abstract: | Multivariate restricted maximum likelihood analyses for a large data set comprising eight traits were carried out, estimating the leading 3, 4, 5 and 6 genetic principal components only. Traits were eye muscle area, percentage intra-muscular fat, and fat depth at the 12/13th rib and P8 sites, treating records on bulls and heifers or steers as different traits. The resulting, reduced rank estimates of genetic covariance matrices for analyses fitting 5 or 6 principal components agreed closely with an estimate from pooled, bivariate analysis. It is shown that reduced rank estimation can result in substantial reduction in computational requirements, compared to standard analyses fitting unstructured covariance matrices, and thus facilitate higher-dimensional multivariate analyses. | 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. 56-59 | 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/2005/056meyer.pdf http://trove.nla.gov.au/work/13321110 |
---|---|
Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
Files in This Item:
File | Description | Size | Format |
---|
Page view(s)
1,214
checked on Mar 24, 2024
Download(s)
2
checked on Mar 24, 2024
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.