01588nam a2200181 a 450000100080000000500110000800800410001910000160006024500850007626001480016150001110030952009180042065300090133865300150134765300120136270000160137470000160139010619292021-03-31       2014    bl uuuu     u01u1 u    #d1 aLEGARRA, A.  aSingle step methods with a view towards poultry breeding.h[electronic resource]  aIn: Proceedings of the World Congress on Genetics Applied to Livestock Production, 10., Vancouver, BC, Canada, August 17-22, 2014. p.324.c2014  aAcknowledgements: This work has been financed by X-Gen and GenSSeq actions from SelGen metaprogram (INRA).  aABSTRACT. Single Step methods combine pedigree relationships and marker genotypes in a single conceptual and streamlined framework based on extending animal model BLUP to include marker genotypes. The extension can be done because genotypes at markers follow covariances described by the pedigree. This results in a relationship matrix that combines pedigree and markers, called H. Fitting H-1 in Henderson?s Mixed Model Equations gives the Single Step Genomic BLUP, which is a single estimator of breeding values that includes all available information. It is easily generalizable to multiple trait and many different models, including Bayesian regressions. Extensions to crosses are largely untested and may need theoretical developments. Single step is increasingly used in poultry breeding, for its ease of use, generality, and better accuracy than any competing method. Some results in poultry are discussed.  aBLUP  aEvaluation  aGenomic1 aAGUILAR, I.1 aMISZTAL, I.