Impact of Genetic Groups and Herd-Year-Season Fixed/Random on Genetic Parameter Estimates from Large Data Sets in Pigs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F12%3A%230001751" target="_blank" >RIV/00027014:_____/12:#0001751 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.respigbreed.cz/2012/2/20.pdf" target="_blank" >http://www.respigbreed.cz/2012/2/20.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Impact of Genetic Groups and Herd-Year-Season Fixed/Random on Genetic Parameter Estimates from Large Data Sets in Pigs

Popis výsledku v původním jazyce

Four-trait animal models were used to estimate genetic parameters for lean meat percentage, average daily gain from birth to the end of the test, number of piglets born alive in the first litter and number of piglets born alive in the second and subsequent litters for Czech Large White and Czech Landrace pigs. The models differed by considering herd-year-season as random or fixed and by the presence or absence of genetic group effects. Similar heritabilities and genetic correlations between traits wereestimated for all four variants of models giving no reason for preferring one of these variants. However, results from the literature show that treating herd-year-season as fixed effect in the genetic evaluation should be desirable because qualitative genetic material has been more and more concentrated in certain herds. The use of genetic groups in the models seems to be problematic and is probably not really necessary.

Název v anglickém jazyce

Impact of Genetic Groups and Herd-Year-Season Fixed/Random on Genetic Parameter Estimates from Large Data Sets in Pigs

Popis výsledku anglicky

Four-trait animal models were used to estimate genetic parameters for lean meat percentage, average daily gain from birth to the end of the test, number of piglets born alive in the first litter and number of piglets born alive in the second and subsequent litters for Czech Large White and Czech Landrace pigs. The models differed by considering herd-year-season as random or fixed and by the presence or absence of genetic group effects. Similar heritabilities and genetic correlations between traits wereestimated for all four variants of models giving no reason for preferring one of these variants. However, results from the literature show that treating herd-year-season as fixed effect in the genetic evaluation should be desirable because qualitative genetic material has been more and more concentrated in certain herds. The use of genetic groups in the models seems to be problematic and is probably not really necessary.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GI - Šlechtění a plemenářství hospodářských zvířat

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Research in Pig Breeding

ISSN

1802-7547

e-ISSN

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Svazek periodika

6

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

88-96

Kód UT WoS článku

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EID výsledku v databázi Scopus

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