Hierarchical Bayes multiple-breed inference with an application to genetic evaluation of a Nelore-Hereford population

Journal of Animal Science
F F Cardoso, R J Tempelman

Abstract

The primary objective of this study was to demonstrate the utility of a hierarchical Bayes implementation of a multiple-breed animal model (MBAM) to estimate breed composition means and additive genetic variances as well as on variances due to the segregation between breeds. The MBAM and a conventional animal model (AM) were both applied to five simulated data sets derived from each of two different populations. Population I consisted of crosses between two breeds having a twofold difference in genetic variance and a nonzero segregation variance. Population II had the same population structure as Population I, except that the two breeds had the same genetic variance with no segregation variance; that is, Population II was essentially single breed in its genetic architecture. For Population I, posterior means of all variance components obtained by MBAM were unbiased, with 95% posterior probability intervals (PPI) having the expected coverage based on five replicates. The MBAM showed a slightly superior performance over the AM for genetic predictions in Population I, although there was no evidence that the use of the MBAM translated into greater genetic gains relative to the use of the AM. Nevertheless, the MBAM was clearly demon...Continue Reading

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Citations

Nov 30, 2006·Genetics, Selection, Evolution : GSE·Luis Alberto García-Cortés, Miguel Angel Toro
Jan 13, 2016·Animal : an International Journal of Animal Bioscience·M M OliveiraF F Cardoso
Jun 27, 2015·Journal of Animal Science·F F CardosoI Aguilar
Jun 18, 2017·Genetics, Selection, Evolution : GSE·Bruna P SolleroFernando F Cardoso
Sep 24, 2016·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·V S JunqueiraP S Lopes
Nov 23, 2017·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·C A MartínezM A Elzo
Aug 16, 2011·Journal of Animal Science·N Ibáñez-EscricheJ L Noguera
Jan 12, 2021·Frontiers in Genetics·Vinícius Silva JunqueiraFernando Flores Cardoso
Jul 13, 2021·Frontiers in Immunology·Fernando Flores CardosoBen J Hayes
Jun 15, 2010·Genetics, Selection, Evolution : GSE·Sebastián Munilla Leguizamón, Rodolfo J C Cantet

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