Anders Christian Sørensen

Diminishing Marginal Returns From Genomic Selection As More Selection Candidates Are Phenotyped

Publikation: KonferencebidragPaperForskningpeer review

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  • Tobias O Okeno, Danmark
  • Mark Henryon, School of Animal Biology, University of Western Australia, Danish Agriculture and Food Council, Pig Research Center, Copenhagen, Denmark, Australien
  • Anders Christian Sørensen
We used stochastic simulation to test hypotheses that, (i) phenotyping proportion of high ranking selection candidates based on estimated breeding values (EBV) before genotyping could realize as much genetic gains as phenotyping all candidates, and (ii) there is diminishing return to selection as more candidates are phenotyped in genomic breeding programs. Three phenotyping criteria, namely, random (RS), EBV and true breeding value (TBV) were investigated under two schemes (across-population and within-litter) using traditional-BLUP and genomic-BLUP models. The EBV ranked above RS and realized maximum achievable gains in the breeding program at 80% phenotyping. There was diminishing return to selection as more candidates were phenotyped; indicating that information content is not so large in the last candidate compared to the first candidate phenotyped. These findings demonstrate the need to rank selection candidates and phenotype only top 80% in genomic selection program as no bias was detected.
OriginalsprogEngelsk
Udgivelsesår17 aug. 2014
Antal sider3
StatusUdgivet - 17 aug. 2014
Begivenhed10th World Congress on Genetics Applied to Livestock Production (WCGALP) - The Westin Bayshore, 1601 Bayshore Drive, Vancouver, BC V6G 2V4, Vancouver, Canada
Varighed: 17 aug. 201422 aug. 2014
Konferencens nummer: 10th

Konference

Konference10th World Congress on Genetics Applied to Livestock Production (WCGALP)
Nummer10th
LokationThe Westin Bayshore, 1601 Bayshore Drive, Vancouver, BC V6G 2V4
LandCanada
ByVancouver
Periode17/08/201422/08/2014

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