Multiple trait genomic evaluation of conception rate in Holsteins

被引：50

作者：

Aguilar, I. ^{[1
,2
]}

Misztal, I. ^{[1
]}

Tsuruta, S. ^{[1
]}

Wiggans, G. R. ^{[3
]}

Lawlor, T. J. ^{[4
]}

机构：

[1] Univ Georgia, Anim & Dairy Sci Dept, Athens, GA 30602 USA

[2] Inst Nacl Invest Agropecuaria INIA Las Brujas, Canelones 90200, Uruguay

[3] ARS, USDA, Beltsville, MD 20705 USA

[4] Holstein Assoc USA Inc, Brattleboro, VT 05302 USA

来源：

JOURNAL OF DAIRY SCIENCE | 2011年 / 94卷 / 05期

关键词：

BLUP; genomic selection; fertility; genetic evaluation; FULL PEDIGREE; GENETIC EVALUATION; INFORMATION; FERTILITY; COWS; PREDICTIONS; MODEL;

D O I：

10.3168/jds.2010-3893

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

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.

引用

页码：2621 / 2624

页数：4

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