Estimation of genetic parameters for milk production traits in Czech dairy cattle populations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F01%3A00000098" target="_blank" >RIV/00027014:_____/01:00000098 - 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

Estimation of genetic parameters for milk production traits in Czech dairy cattle populations

Popis výsledku v původním jazyce

Multiple-trait analyses treating the yields in the first three lactations as different traits were performed for milk fat and protein yield for the populations of the Holstein and Czech Pied breeds kept in the Czech Republic. Data sets from the nationalmilk recording data base were used. Five subsets of data were formed for each breed. The total number of animals with lactation records was 738488 for Holstein and 1016388 for Czech Pied breed. Variance and covariance components were estimated with VCE with VCE using REML under an animal model. The model included the factors herd-year-season (fixed) animal (random) calving age days open and calving interval (covariables). The estimated h2 for milk yield were higher for Holstein (0.28 to 0.30) than for Czech Pied cattle (0.21 to 0.26). They were slightly higher than the heritabilities for fat and protein yield. A genetic correlation near one was found between the yields for the second and third lactations.

Název v anglickém jazyce

Estimation of genetic parameters for milk production traits in Czech dairy cattle populations

Popis výsledku anglicky

Multiple-trait analyses treating the yields in the first three lactations as different traits were performed for milk fat and protein yield for the populations of the Holstein and Czech Pied breeds kept in the Czech Republic. Data sets from the nationalmilk recording data base were used. Five subsets of data were formed for each breed. The total number of animals with lactation records was 738488 for Holstein and 1016388 for Czech Pied breed. Variance and covariance components were estimated with VCE with VCE using REML under an animal model. The model included the factors herd-year-season (fixed) animal (random) calving age days open and calving interval (covariables). The estimated h2 for milk yield were higher for Holstein (0.28 to 0.30) than for Czech Pied cattle (0.21 to 0.26). They were slightly higher than the heritabilities for fat and protein yield. A genetic correlation near one was found between the yields for the second and third lactations.

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

2001

Kód důvěrnosti údajů

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

Název periodika

Czech Journal of Animal Science

ISSN

1212-1819

e-ISSN

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Svazek periodika

46

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

292-301

Kód UT WoS článku

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EID výsledku v databázi Scopus

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