Accounting for genomic pre-selection in national BLUP evaluations in dairy cattle
C Patry, V Ducrocq - Genetics Selection Evolution, 2011 - Springer
Abstract Background In future Best Linear Unbiased Prediction (BLUP) evaluations of dairy
cattle, genomic selection of young sires will cause evaluation biases and loss of accuracy …
cattle, genomic selection of young sires will cause evaluation biases and loss of accuracy …
Reducing bias in the dairy cattle single‐step genomic evaluation by ignoring bulls without progeny
M Koivula, I Strandén, GP Aamand… - Journal of Animal …, 2018 - Wiley Online Library
The number of genotyped animals has increased rapidly creating computational challenges
for genomic evaluation. In animal model BLUP, candidate animals without progeny and …
for genomic evaluation. In animal model BLUP, candidate animals without progeny and …
[HTML][HTML] Evidence of biases in genetic evaluations due to genomic preselection in dairy cattle
C Patry, V Ducrocq - Journal of dairy science, 2011 - Elsevier
A genomic preselection step of young sires is now often included in dairy cattle breeding
schemes. Young sires are selected based on their genomic breeding values. They have …
schemes. Young sires are selected based on their genomic breeding values. They have …
[HTML][HTML] Comparison of different validation methods for single-step genomic evaluations based on a simulated cattle population
J Himmelbauer, H Schwarzenbacher, C Fuerst… - Journal of Dairy …, 2023 - Elsevier
The validation of estimated breeding values from single-step genomic BLUP (ssGBLUP) is
an important topic, as more and more countries and animal populations are currently …
an important topic, as more and more countries and animal populations are currently …
Impacts of both reference population size and inclusion of a residual polygenic effect on the accuracy of genomic prediction
Z Liu, FR Seefried, F Reinhardt, S Rensing… - Genetics Selection …, 2011 - Springer
Background The purpose of this work was to study the impact of both the size of genomic
reference populations and the inclusion of a residual polygenic effect on dairy cattle genetic …
reference populations and the inclusion of a residual polygenic effect on dairy cattle genetic …
Avoiding preselection bias in subsequent single‐step genomic BLUP evaluations of genomically preselected animals
I Jibrila, J Vandenplas, J Ten Napel… - Journal of Animal …, 2021 - Wiley Online Library
In animal breeding, parents of the next generation are usually selected in multiple stages,
and the initial stages of this selection are called preselection. Preselection reduces the …
and the initial stages of this selection are called preselection. Preselection reduces the …
Precision of genetic parameters and breeding values estimated in marker assisted BLUP genetic evaluation
S Neuner, C Edel, R Emmerling, G Thaller… - Genetics Selection …, 2009 - Springer
In practical implementations of marker-assisted selection economic and logistic restrictions
frequently lead to incomplete genotypic data for the animals of interest. This may result in …
frequently lead to incomplete genotypic data for the animals of interest. This may result in …
Bias and accuracy of dairy sheep evaluations using BLUP and SSGBLUP with metafounders and unknown parent groups
FL Macedo, OF Christensen, JM Astruc… - Genetics Selection …, 2020 - Springer
Background Bias has been reported in genetic or genomic evaluations of several species.
Common biases are systematic differences between averages of estimated and true …
Common biases are systematic differences between averages of estimated and true …
[HTML][HTML] Comparison of genomic predictions for lowly heritable traits using multi-step and single-step genomic best linear unbiased predictor in Holstein cattle
The success and sustainability of a breeding program incorporating genomic information is
largely dependent on the accuracy of predictions. For low heritability traits, large training …
largely dependent on the accuracy of predictions. For low heritability traits, large training …
[PDF][PDF] Bias due to genomic selection
C Patry, V Ducrocq - Interbull workshop on genomic selection, 2009 - hal.science
The inclusion of a pre-selection step based on genomic selection in breeding schemes
invalidates some of the assumptions necessary to get optimal BLUP properties in (inter) …
invalidates some of the assumptions necessary to get optimal BLUP properties in (inter) …
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