Reliability of breeding values for single- and multi-trait models of dam pig breed obtained using direct inversion and approximation methods

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F17%3AN0000219" target="_blank" >RIV/00027014:_____/17:N0000219 - isvavai.cz</a>

Result on the web

<a href="https://vuzv.cz/_privat/17239.pdf" target="_blank" >https://vuzv.cz/_privat/17239.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Reliability of breeding values for single- and multi-trait models of dam pig breed obtained using direct inversion and approximation methods

Original language description

The objective of this study was to predict breeding values for single- and multi-trait animal models and compute their reliabilities using a direct inversion method (DIM), and single (ST-APM) and multi-trait approximate methods (MT-APM). Variance and covariance components of lean meat (LM) content, average daily gain (ADG) from birth until the end of the field test, and number of piglets born alive at first (NBA1) and second and subsequent parities (NBA2), were estimated for the analyses of Czech Large White pigs (390,734 records), using single- and four-trait animal models. The average reliabilities estimated by DIM for all considered animals were 0.514 ±0.069, 0.406 ±0.070, 0.050 ±0.044, and 0.321 ±0.090 for LM, ADG, NBA1, and NBA2, respectively. Values of 0.576 ±0.087, 0.150 ±0.078, 0.228 ±0.078, and 0.323 ±0.099, were obtained for the ST-APM for LM, ADG, NBA1, and NBA2, respectively. The use of MT-APM slightly increases the reliability of breeding values by 4%, 6%, 14% and 8% for LM, ADG, NBA1, and NBA2, respectively. In addition, the dependence of the reliability values on the number of offspring of breeding boars is obtained; the reliability increases from 0.215 for less than 5 offspring to 0.989 for more than 400 offspring for the LM trait. Calculated Pearson's and Spearman's correlation coefficients between the employed methods were, in general, high, positive, and highly statistically significant. The multi-trait approximation method can be used for the calculation of reliabilities of breeding values as an alternative for direct inversion method that has computational limitations.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

40203 - Husbandry

Project

<a href="/en/project/QJ1310109" target="_blank" >QJ1310109: Optimization of the Czech pig breeding program with special regard to reproduction and functional traits</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

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta fytotechnica et zootechnica

ISSN

1336-9245

e-ISSN

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Volume of the periodical

20

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

5

Pages from-to

90-94

UT code for WoS article

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EID of the result in the Scopus database

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