Genetic parameter estimates for milk production traits of Czech Simmental cattle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F00%3A00000167" target="_blank" >RIV/00027014:_____/00:00000167 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Genetic parameter estimates for milk production traits of Czech Simmental cattle

Popis výsledku v původním jazyce

Milk, fat and protein yield in first three lactations were analysed for the Simmental cattle population in the Czech Republic using data sets from the national milk recording data base. (Co)variance components were estimated using REML under an animal model in three data sets that were created according to regions. The model for the analyses included the factors herd-year-season (fixed), animal (random), calving age, days open and calving interval (covariables). The analyses were performed separately for milk, fat and protein yield. Heritability estimates were calculated from the average (co)variance matrix using the results from data sets. Heritabilities reached values about 0.20. For milk yield they were slightly higher (0.23-0.26) than for the otheranalysed traits. High genetic correlations (about 0.99) were found between yields for the second and third lactation.

Název v anglickém jazyce

Genetic parameter estimates for milk production traits of Czech Simmental cattle

Popis výsledku anglicky

Milk, fat and protein yield in first three lactations were analysed for the Simmental cattle population in the Czech Republic using data sets from the national milk recording data base. (Co)variance components were estimated using REML under an animal model in three data sets that were created according to regions. The model for the analyses included the factors herd-year-season (fixed), animal (random), calving age, days open and calving interval (covariables). The analyses were performed separately for milk, fat and protein yield. Heritability estimates were calculated from the average (co)variance matrix using the results from data sets. Heritabilities reached values about 0.20. For milk yield they were slightly higher (0.23-0.26) than for the otheranalysed traits. High genetic correlations (about 0.99) were found between yields for the second and third lactation.

Druh

D - Stať ve sborníku

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

2000

Kód důvěrnosti údajů

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

Název statě ve sborníku

Současnost a perspektivy šlechtění hospodářských zvířat

ISBN

80-213-0677-7

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

Česká zemědělska univerzita v Praze

Místo vydání

Praha

Místo konání akce

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Datum konání akce

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Typ akce podle státní příslušnosti

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Kód UT WoS článku

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