Comparing deregression methods for genomic prediction of test‐day traits in dairy cattle

dc.creatorOliveira, H.R. de
dc.creatorSilva, F.F.
dc.creatorBrito, L.F.
dc.creatorGuarini, A.R.
dc.creatorJamrozik, J.
dc.creatorSchenkel, F.S.
dc.date2018-04-27T10:20:42Z
dc.date2018-04-27T10:20:42Z
dc.date2018-01-22
dc.date.accessioned2023-09-27T22:17:11Z
dc.date.available2023-09-27T22:17:11Z
dc.identifier0931-2668
dc.identifierhttps://doi.org/10.1111/jbg.12317
dc.identifierhttp://www.locus.ufv.br/handle/123456789/19206
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8973160
dc.descriptionWe aimed to investigate the performance of three deregression methods (VanRaden, VR; Wiggans, WG; and Garrick, GR) of cows’ and bulls’ breeding values to be used as pseudophenotypes in the genomic evaluation of test‐day dairy production traits. Three scenarios were considered within each deregression method: (i) including only animals with reliability of estimated breeding value (RELEBV ) higher than the average of parent reliability (RELPA ) in the training and validation populations; (ii) including only animals with RELEBV higher than 0.50 in the training and RELEBV higher than RELPA in the validation population; and (iii) including only animals with RELEBV higher than 0.50 in both training and validation populations. Individual random regression coefficients of lactation curves were predicted using the genomic best linear unbiased prediction (GBLUP), considering either unweighted or weighted residual variances based on effective records contributions. In summary, VR and WG deregression methods seemed more appropriate for genomic prediction of test‐day traits without need for weighting in the genomic analysis, unless large differences in RELEBV between training population animals exist.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherJournal of Animal Breeding and Genetics
dc.relationv. 135, n. 2, p. 97–106, April 2018
dc.rightsOpen Access
dc.subjectEstimated breeding value
dc.subjectGenomic value
dc.subjectJersey
dc.subjectRandom regression
dc.subjectReliability
dc.titleComparing deregression methods for genomic prediction of test‐day traits in dairy cattle
dc.typeArtigo


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