01660naa a2200229 a 450000100080000000500110000800800410001902200140006002400310007410000160010524500710012126000090019250000770020152009660027865000260124465000250127070000160129570000160131170000180132770000170134577300680136210128402019-10-23       2011    bl uuuu     u00u1 u    #d  a0022-03027 a10.3168/jds.2010-38932DOI1 aAGUILAR, I.  aMultiple trait genomic evaluation of conception rate in Holsteins.  c2011  aArticle history: Received October 4, 2010. /  Accepted January 25, 2011.  aABSTRACT.  A national data set of artificial inseminations in US Holsteins was used to obtain genetic evaluations for conception rate (CR). The objective of this study was to investigate the feasibility and resulting accuracy from using all available phenotypic, pedigree, and genomic information. Evaluations were performed by regular BLUP or by BLUP with the traditional pedigree and genomic relationships combined in a unified single-step procedure (SSP). Genetic parameters of CR in the first 3 parities were estimated with data from New York State only. Heritability estimates were around 2% and genetic correlations between CR in different parities were >0.73. The R 2 obtained with the SSP were almost twice as large as those achieved with regular BLUP. Computing the SSP took 2h, and it was 33% slower than a regular BLUP. A multiple-trait evaluation of CR using the SSP is both possible and advantageous.  © 2011 American Dairy Science Association.  aEVALUACIÓN GENÉTICA  aSELECCIÓN GENÉTICA1 aMISZTAL, I.1 aTSURUTA, S.1 aWIGGANS, G.R.1 aLAWLOR, T.J.  tJournal of Dairy Science, 2011, 94 (5): 2621-2624. OPEN ACCESS.