a study of the effect of using dense markers close to the known loci of trait affecting genes on genomic evaluation accuracy

throughout the present study the effect of using markers close to genes affecting a trait, ascompared with the use of all the markers of a genome, and also the effect of on increase in thenumber of reference groups, on the accuracy of a genetic evaluation, was investigated. genomicevaluation was done using blup method. the results indicated that use of markers close to genesaffecting a trait and on increase in the number of reference groups would enhance the accuracy inan evaluation of the estimated breeding values (ebvs). use of phenotypic records (incomparison with breeding values of reference group) would result in an increase in the accuracy ofestimating the breeding values by use of markers close to the effective genes on the trait ascompared with the use of all the markers of a genome. increase in number of generations betweenreference and validation groups would result in a decrease of the accuracy of ebvs.