Please use this identifier to cite or link to this item:
|Title:||Optimal utilization of non-additive quantitative trait locus in animal breeding programs||Contributor(s):||Li, Yongjin (author); Van Der Werf, Julius Herman (author) ; Kinghorn, Brian (author)||Publication Date:||2008||DOI:||10.1111/j.1439-0388.2008.00741.x||Handle Link:||https://hdl.handle.net/1959.11/2877||Abstract:||Optimal selection on a single identified quantitative trait locus (QTL) with four modes of inheritance: normal autosomal, sex-limited, imprinting and X-linked, was evaluated in four breeding structures: single line selection (SLS), two-way crossing (2WC), three-way crossing (3WC) and reciprocal crossing (RC) by comparing extra benefit from mate selection over index selection to demonstrate effectiveness of mate selection in exploiting non-additive QTL. The results showed that the superiority varied at different QTL inheritance modes, initial favourable allele frequencies and breeding structures. The superiority tended to decrease with the increase of the favourable allele frequency except for over-dominant QTL and imprinted QTL in all breeding structures. Less superiority (below 9%) was observed for a recessive and a fully dominant QTL than for an over-dominant QTL (up to 27.11%). Normal autosomal and sex-linked QTL led to a similar trend of superiority from mate selection but the magnitude of the superiority with the latter was slightly higher than with the former for most combinations of the parameters. A high superiority (6.41–41.54%) was observed from mate selection over index selection for an imprinted QTL. A maternally imprinted QTL tended to lead to higher superiority from mate selection than a paternally imprinted QTL. X-linked QTL led to less superiority from mate selection than the other modes of QTL. A larger superiority from mate selection was observed for a recessive and a fully dominant QTL in structures 3WC and 2WC than structures RC and SLS. The superiority from autosomal QTL and X-linked QTL was lower in the structure RC than in other structures examined.||Publication Type:||Journal Article||Source of Publication:||Journal of Animal Breeding and Genetics, 125(5), p. 342-350||Publisher:||Blackwell Publishing||Place of Publication:||Berlin, Germany||ISSN:||0931-2668||Field of Research (FOR):||060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics)||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 141
|Appears in Collections:||Journal Article|
School of Environmental and Rural Science
Files in This Item:
checked on Nov 27, 2018
checked on Mar 4, 2019
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.