Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/2862
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fischer, Troy | en |
dc.contributor.author | Van Der Werf, Julius Herman | en |
dc.contributor.author | Banks, Robert | en |
dc.contributor.author | Ball, Alex | en |
dc.date.accessioned | 2009-11-03T16:41:00Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | Livestock Production Science, 89(2-3), p. 175-185 | en |
dc.identifier.issn | 1872-6070 | en |
dc.identifier.issn | 0301-6226 | en |
dc.identifier.issn | 1871-1413 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/2862 | - |
dc.description.abstract | Random regression has been proposed as an accurate method for evaluation of growth data; however, this method has seldom been applied to data from an extensive industry where few records per animal exist. Consequently, field data containing weights of Poll Dorset sheep from 50 to 500 days of age were analysed fitting a random regression model. This model included quadratic, orthogonal polynomials for direct genetic and environmental effects and maternal environmental effects, a linear polynomial for maternal genetic effects and heterogeneous error variances. Direct heritability estimates increased steadily throughout time and were in agreement with literature estimates taken at specific ages. Some estimates for the highest ages with the least records tended to be overestimated, in particular heritability beyond 450 days. Research to solve this problem may require use of a function other than a polynomial. Variances due to maternal genetic effects were low throughout the trajectory. Covariances between weights of sheep for a considerable range of ages can be modelled adequately using random regression. | en |
dc.language | en | en |
dc.publisher | Elsevier BV | en |
dc.relation.ispartof | Livestock Production Science | en |
dc.title | Description of lamb growth using random regression on field data | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1016/j.livprodsci.2004.02.004 | en |
dc.subject.keywords | Animal Breeding | en |
local.contributor.firstname | Troy | en |
local.contributor.firstname | Julius Herman | en |
local.contributor.firstname | Robert | en |
local.contributor.firstname | Alex | en |
local.subject.for2008 | 070201 Animal Breeding | en |
local.subject.seo2008 | 830310 Sheep - Meat | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | jvanderw@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | pes:1728 | en |
local.publisher.place | Netherlands | en |
local.format.startpage | 175 | en |
local.format.endpage | 185 | en |
local.identifier.scopusid | 2442510062 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 89 | en |
local.identifier.issue | 2-3 | en |
local.contributor.lastname | Fischer | en |
local.contributor.lastname | Van Der Werf | en |
local.contributor.lastname | Banks | en |
local.contributor.lastname | Ball | en |
dc.identifier.staff | une-id:jvanderw | en |
local.profile.orcid | 0000-0003-2512-1696 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:2940 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Description of lamb growth using random regression on field data | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.relation.url | http://nla.gov.au/anbd.bib-an2967552 | en |
local.search.author | Fischer, Troy | en |
local.search.author | Van Der Werf, Julius Herman | en |
local.search.author | Banks, Robert | en |
local.search.author | Ball, Alex | en |
local.uneassociation | Unknown | en |
local.identifier.wosid | 000224221200007 | en |
local.year.published | 2004 | en |
Appears in Collections: | Journal Article |
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