نتایج جستجو برای: genomic selection

تعداد نتایج: 424739  

Journal: :علوم دامی ایران 0
مهدی مخبر دانشجوی دکتری ژنتیک و اصلاح نژاد، گروه مهندسی علوم دامی دانشگاه تهران، کرج، ایران محمد مرادی شهربابک استاد گروه مهندسی علوم دامی دانشگاه تهران، کرج، ایران مصطفی صادقی استادیار گروه مهندسی علوم دامی دانشگاه تهران، کرج، ایران حسین مرادی شهربابک استادیار گروه مهندسی علوم دامی دانشگاه تهران، کرج، ایران جان ویلیامز استاد و مدیر بخش ژنومیک مرکز تحقیقات padano، ایتالیا

identification of selection targeted genomic regions is one of the most challenging areas of research in animal genetics, particularly in livestock. we carried out a genome-wide scan for signatures of positive selection to identify genomic regions that had been under selection in iranian khuzestani and mazandrani buffalo breeds. a total of 148 water buffalo from khuzestani (n=121) and mazandran...

Journal: :Journal of Animal Breeding and Genetics 2011

Journal: :Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie 2007
M E Goddard B J Hayes

Genomic selection is a form of marker-assisted selection in which genetic markers covering the whole genome are used so that all quantitative trait loci (QTL) are in linkage disequilibrium with at least one marker. This approach has become feasible thanks to the large number of single nucleotide polymorphisms (SNP) discovered by genome sequencing and new methods to efficiently genotype large nu...

Journal: :Food and Energy Security 2015

Journal: :پژوهش های علوم دامی ایران 0
نازنین محمودی احمد آیت اللهی مهرجردی محمود هنرور علی اسماعیلی زاده کشکوئیه

introduction genetic evaluation and estimation of breeding value are one of the most fundamental elements of breeding programmes for genetic improvement. recently, genomic selection has become an efficient method to approach this aim. the accuracy of estimated genomic breeding value is the most important factor in genomic selection. different studies have been performed addressing the factors a...

2016
Helena Oakey Brian Cullis Robin Thompson Jordi Comadran Claire Halpin Robbie Waugh

Genomic selection in crop breeding introduces modeling challenges not found in animal studies. These include the need to accommodate replicate plants for each line, consider spatial variation in field trials, address line by environment interactions, and capture nonadditive effects. Here, we propose a flexible single-stage genomic selection approach that resolves these issues. Our linear mixed ...

Extended Abstract Introduction and Objective: Selection to increase the frequency of new mutations useful only in some subpopulations leaves markers at the genome level. Most of these regions are related to genes and QTLs controlling significant economic traits. Material and Methods: In order to detection of genetic differences between Iranian northwestern crossbred and Holstein cattle breed,...

ستایی مختاری, مرتضی, محمدی, یحیی,

     In most genomic prediction studies only additive effects will be used in models for estimating genomic breeding values (GEBV). However, dominance genetic effects are an important source of variation for complex traits, considering them into account may improve the accuracy of GEBV. In the present  study,  performed applying  simulated data, the effect of  different heritability values (0.1...

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