Technical Note: How to use Winbugs to draw inferences in animal models

L. H. Damgaard Technical Note: How to use Winbugs to draw inferences in animal models published online Jan 3, 2007; J Anim Sci http://jas.fass.org located on the World Wide Web at: The online version of this article, along with updated information and services, is www.asas.org by on June 8, 2010. jas.fass.orgDownloaded from Running head: Gibbs updating of additive genetic effects1 2 Technical Note: How to use Winbugs to draw 3 inferences in animal models 1 4 L. H. Damgaard

2 5 Department of Genetics and Biotechnology, Danish Institute of Agricultural 6 Sciences, P.O. Box 50, 8830 Tjele, Denmark. † Department of Natural Sciences, 7 Royal Veterinary and Agricultural University, Thorvaldsensvej 40, 1870 8 Frederiksberg C, Denmark9 1 I thank Ignacy Misztal for useful discussions on the partition of the additive genetic relationship matrix and associated calculations 2 Correspondence: L. H. Damgaard, Department of Genetics and Biotechnology Danish Institute of Agricultural Sciences, P.O. Box 50, 8830 Tjele, Denmark; Phone 0045-89991212; E-mail: lars.damgaard@agrsci.dk. Page 1 of 20 Journal of Animal Science Published Online First on January 3, 2007 as doi:10.2527/jas.2006-543 by on June 8, 2010. jas.fass.orgDownloaded from ABSTRACT: This paper deals with Bayesian inferences of animal models using 10 Gibbs sampling. First, we suggest a general and efficient method for updating 11 additive genetic effects, where the computational cost is independent of the 12 pedigree depth and only increases linearly with the size of the pedigree. Second, 13 we show how this approach can be used to draw inferences from a wide range of 14 animal models using the computer package Winbugs. Finally we illustrate the 15 approach in a simulation study, where data are generated and analysed (using 16...

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