Journal
JOURNAL OF DAIRY SCIENCE
Volume 94, Issue 5, Pages 2621-2624Publisher
ELSEVIER SCIENCE INC
DOI: 10.3168/jds.2010-3893
Keywords
BLUP; genomic selection; fertility; genetic evaluation
Funding
- Holstein Association USA Inc.
- USDA NIFA [2009-65205-05665, 2010-65205-20366]
- NIFA [581193, 2010-65205-20366] Funding Source: Federal RePORTER
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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 2 h, and it was 33% slower than a regular BLUP. A multiple-trait evaluation of CR using the SSP is both possible and advantageous.
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