Document Detail

Bayesian estimation of dominance merits in noninbred populations by using Gibbs sampling with two reduced sets of mixed model equations.
MedLine Citation:
PMID:  15306725     Owner:  NLM     Status:  MEDLINE    
Henderson's mixed model equations system is generally required in a Gibbs sampling application. In two previous studies, we proposed two indirect solving approaches that give dominance values in an animal model context with no need to process all this system. The first one does not require D-1 and the second is based on processing the additive animal model residuals. In the present work, we show that these two methods can be handled iteratively. Since the Bayesian approach is now a widely used tool in estimation of genetic parameters, the main part of this work is devoted to a Gibbs sampling application that can be accelerated by means of the aforementioned indirect solving methods. Three replicates of a population data set are simulated in the paper to compare the applications and estimates. This shows effectively that the estimates given by implementing a Gibbs sampler with each of the two suggested solving methods are obtained with less computational time and are comparable to those given by considering the integral system, particularly when priors are more weighted.
Abdellah Chalh; Mohamed Gazzah M
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied genetics     Volume:  45     ISSN:  1234-1983     ISO Abbreviation:  J. Appl. Genet.     Publication Date:  2004  
Date Detail:
Created Date:  2004-08-12     Completed Date:  2004-12-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9514582     Medline TA:  J Appl Genet     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  331-9     Citation Subset:  IM    
Laboratoire de Génétique et Biométrie, Département de Biologie, Faculté des Sciences de Tunis, Le Belvédere, 1060, Tunis, Tunisia.
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MeSH Terms
Bayes Theorem*
Genes, Dominant
Genetics, Population
Models, Genetic*

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