نتایج جستجو برای: bayesa

تعداد نتایج: 32  

2011
Mario PL Calus Han A Mulder Roel F Veerkamp

BACKGROUND Genomic selection is particularly beneficial for difficult or expensive to measure traits. Since multi-trait selection is an important tool to deal with such cases, an important question is what the added value is of multi-trait genomic selection. METHODS The simulated dataset, including a quantitative and binary trait, was analyzed with four univariate and bivariate linear models ...

2011
Xiaochen Sun David Habier Rohan L Fernando Dorian J Garrick Jack CM Dekkers

BACKGROUND Bayesian methods allow prediction of genomic breeding values (GEBVs) using high-density single nucleotide polymorphisms (SNPs) covering the whole genome with effective shrinkage of SNP effects using appropriate priors. In this study we applied a modification of the well-known BayesA and BayesB methods to estimate the proportion of SNPs with zero effects (π) and a common variance for ...

Journal: :Journal of animal science and products 2021

The underlying perception of genomic selection (GS) is to use genome-wide from DNA sequence (“SNP markers”) along with phenotypes an observed population make prediction for the phenotypic outcomes untested individuals in crop and livestock breeding programs. GS was firstly described by Meuwissen et al.(2001) dairy cattle identify genetically superior animals at early age. aim capture specific g...

C. Robert Granie F. Alanoshahr, R. Imany-Nabiyyi S. Alijani S.A. Rafat

Genome-wide evaluation uses the associations of a large number of single nucleotide polymorphism (SNP) markers across the whole genome and then combines the statistical methods with genomic data to predict the genetic values. Genomic predictions relieson linkage disequilibrium (LD) between genetic markers and quantitative trait loci (QTL) in a population. Methods that use all markers simultaneo...

This study aimed to investigate the  effect  of  the method of estimating the effects of markers , QTLs distribution, number of QTLs, effective population size and trait heritability on the accuracy of genomic predictions. Two effective population sizes, 100 and 500 individuals, were simulated by QMSim software. A 100 cM genome including one chromosome was simulated where 500 SNPs and two diffe...

A. Atefi A.A. Shadparvar, N. Ghavi Hossein-Zadeh

The accuracy of genomic breeding value prediction was investigated in various levels of reference population size, trait heritability and the number of quantitative trait locus (QTL). Five Bayesian methods, including Bayesian Ridge regression, BayesA, BayesB, BayesC and Bayesian LASSO, were used to estimate the marker effects for each of 27 scenarios resulted from combining three levels for her...

C. Robert Granie F. Alanoshahr, R. Imany-Nabiyyi S. Alijani S.A. Rafat

The success of genomic selection mainly depends on the extent of linkage disequilibrium (LD) between markers and quantitative trait loci (QTL), number of QTL and heritability (h2) of the traits. The extent of LD depends on the genetic structure of the population and marker density. This study was conducted to determine the effects of marker density, level of heritability, number of QTL, and to ...

2015
Zhe Zhang Malena Erbe Jinlong He Ulrike Ober Ning Gao Hao Zhang Henner Simianer Jiaqi Li

Obtaining accurate predictions of unobserved genetic or phenotypic values for complex traits in animal, plant, and human populations is possible through whole-genome prediction (WGP), a combined analysis of genotypic and phenotypic data. Because the underlying genetic architecture of the trait of interest is an important factor affecting model selection, we propose a new strategy, termed BLUP|G...

2018
Benjamin Stich Delphine Van Inghelandt

Genomic prediction is a routine tool in breeding programs of most major animal and plant species. However, its usefulness for potato breeding has not yet been evaluated in detail. The objectives of this study were to (i) examine the prospects of genomic prediction of key performance traits in a diversity panel of tetraploid potato modeling additive, dominance, and epistatic effects, (ii) invest...

Journal: :International journal of political science and governance 2023

Information technology and university administration were the subjects of this research, which was titled A Comparative Analysis ICT Implementation in Tertiary Institutions Bayelsa State. The study directed by three research questions hypotheses. participants 240 teachers students drawn from Bayesa State Federal University, Otuoke, University Africa, Niger Delta University. Using Taro Yamen for...

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