Genetic Parameters for a Weighted Analysis of Survivability in Dairy Cattle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F23%3A10005685" target="_blank" >RIV/00027014:_____/23:10005685 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2076-2615/13/7/1188" target="_blank" >https://www.mdpi.com/2076-2615/13/7/1188</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ani13071188" target="_blank" >10.3390/ani13071188</a>

Result language

angličtina

Original language name

Genetic Parameters for a Weighted Analysis of Survivability in Dairy Cattle

Original language description

The genetic parameters for the survival of Holstein cows, analysed in nine consecutive time periods during the first three calving intervals, were estimated. The earlier the animals are culled, the more they are informationally underestimated. This undervaluing can be remedied by using a weighted analysis that balances the amount of information. If the method of estimating breeding values changes, the genetic parameters will also change. The Holstein cattle dataset from 2005 to 2017 used in this study included 1,813,636 survival records from 298,290 cows. The pedigree with three generations of ancestors included 660,476 individuals. Linear repeatability models estimated genetic parameters for overall and functional survivability. Due to weights, heritability increased from 0.013 to 0.057. Repeatability with weights was 0.505. The standard deviations of breeding values were 1.75 and 2.18 without weights and 6.04 and 6.20 with weights. Including weights in the calculation increased the additive variance proportion and the breeding values&apos; reliabilities. We conclude that the main contribution of the weighted method we have presented is to compensate for the lack of records in culled individuals with a positive impact on the reliability of the breeding value.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40203 - Husbandry

Project

<a href="/en/project/LTAUSA19117" target="_blank" >LTAUSA19117: Verification of genomic procedures in small populations</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Animals

ISSN

2076-2615

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

7

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

1188

UT code for WoS article

000969570500001

EID of the result in the Scopus database

2-s2.0-85152618396