Short communication: Reliability of single-step genomic BLUP breeding values by multi-trait test-day model analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F15%3A%230002211" target="_blank" >RIV/00027014:_____/15:#0002211 - isvavai.cz</a>
Result on the web
<a href="http://www.vuzv.cz/sites/File/_privat/15056.pdf" target="_blank" >http://www.vuzv.cz/sites/File/_privat/15056.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3168/jds.2015-9371" target="_blank" >10.3168/jds.2015-9371</a>
Alternative languages
Result language
angličtina
Original language name
Short communication: Reliability of single-step genomic BLUP breeding values by multi-trait test-day model analysis
Original language description
The purpose of our study was to develop an approximation procedure to estimate reliabilities of single-step genomic BLUP breeding values in a test-day model for routine evaluation of milk yield in a dairy cattle population. Input data consisted of 20,220,047 first-, second-, and third-lactation test-day milk yield records of 1,126,102 Czech Holstein cows (each lactation being considered a separate trait), with 1,844,679 animals in the pedigree file and with genomic data from 2,236 bulls. Evaluation was according to a multi-lactation model. The procedure was based on the effective number of records per animal from milk recording as well as from genomic and pedigree relationships. Traits were analyzed individually, and genetic covariances among traits were subsequently taken into account. The use of genomic information increased average reliability in young bulls from 0.276 to 0.505, but increased reliability in proven bulls only from 0.828 to 0.855. The reliabilities of genomic breeding values in multi-trait evaluation for first, second and third lactations, respectively, averaged 0.652, 0.673, and 0.633 for young bulls and 0.907, 0.894, and 0.852 for proven bulls. For an index combining all 3 lactations, the average reliability of a single-step genomic BLUP prediction was 0.712 and 0.925 for younger and proven bulls, respectively. Increased reliability due to genotyping in the population of all genotyped and nongenotyped animals was very small (<0.01) because of the small proportion of genotyped animals in the population.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GI - Farm animal breeding and farm animal pedigree breeding
OECD FORD branch
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Result continuities
Project
<a href="/en/project/QJ1510139" target="_blank" >QJ1510139: Nation-wide information system of genetic evaluation of farm animals</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Dairy Science
ISSN
0022-0302
e-ISSN
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Volume of the periodical
98
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
4999-5003
UT code for WoS article
000356645600069
EID of the result in the Scopus database
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