Genetic relationship of functional longevity with female fertility and milk production traits in Czech Holsteins 

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F13%3A%230001923" target="_blank" >RIV/00027014:_____/13:#0001923 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.agriculturejournals.cz/publicFiles/106671.pdf" target="_blank" >http://www.agriculturejournals.cz/publicFiles/106671.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Genetic relationship of functional longevity with female fertility and milk production traits in Czech Holsteins 

Popis výsledku v původním jazyce

The objectives of this study were to estimate heritabilities of and genetic correlations among longevity, milk production, and female fertility traits of Holstein cows. Fertility traits were days open, interval from parturition to first service, and daysbetween the first and last insemination in the first and second lactation, respectively. Production traits were first lactation milk, fat, and protein yield. Functional longevity was defined as the number of days between the first calving and culling, i.e. the length of the productive life. The linear animal model included fixed effects of month-year of first calving, regression on age at first calving, regression on milk yield (only for longevity), and random effects of herd-year, animal, and residual. Heritability estimates for fertility traits ranged from 0,02 ? 0,009 to 0,06 ? 0,004. Heritability of longevity was 0,09. Heritability estimates for production traits ranged from 0,29 ? 0,009 (fat and protein yield) to 0,34 ? 0,009 (mil

Název v anglickém jazyce

Genetic relationship of functional longevity with female fertility and milk production traits in Czech Holsteins 

Popis výsledku anglicky

The objectives of this study were to estimate heritabilities of and genetic correlations among longevity, milk production, and female fertility traits of Holstein cows. Fertility traits were days open, interval from parturition to first service, and daysbetween the first and last insemination in the first and second lactation, respectively. Production traits were first lactation milk, fat, and protein yield. Functional longevity was defined as the number of days between the first calving and culling, i.e. the length of the productive life. The linear animal model included fixed effects of month-year of first calving, regression on age at first calving, regression on milk yield (only for longevity), and random effects of herd-year, animal, and residual. Heritability estimates for fertility traits ranged from 0,02 ? 0,009 to 0,06 ? 0,004. Heritability of longevity was 0,09. Heritability estimates for production traits ranged from 0,29 ? 0,009 (fat and protein yield) to 0,34 ? 0,009 (mil

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

<a href="/cs/project/QI91A238" target="_blank" >QI91A238: Efektivní postupy při řízení stáda dojnic</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

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

58

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

554-565

Kód UT WoS článku

000328563000003

EID výsledku v databázi Scopus

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