The influence of inbreeding depression on reproduction traits - age at first calving in dairy cows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F15%3A67929" target="_blank" >RIV/60460709:41210/15:67929 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/26788462:_____/15:#0000763

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of inbreeding depression on reproduction traits - age at first calving in dairy cows

Popis výsledku v původním jazyce

The aim of this study was to evaluate the effect of inbreeding depression on age at first calving in Holstein and Czech Fleckvieh cows. Only cows with a complete pedigree to the fifth generation were used. Data were collected from 34 farms in the Czech Republic. For proper comparison, each inbred cow (n=1046) was assigned to at least one noninbred equal (n=1046). Inbred and noninbred pairs were matched on characteristics such as identical father, first calving interval occurring at the same farm and calves born in the same year and month (± 2 months). The PROC GLM of SAS® with five fixed effects was applied to all data. Inbred Holstein and Czech Fleckvieh cows and their matched noninbred equals were then divided according to inbreeding coefficient into four (event. five) groups. For Holstein inbred groups: FX=1.25; FX=3.125; FX=6.0-12.0; FX=25.0; FX>25; respectively all animals, the following extension of age at first calving was found: +2.7; +6.9; +9.5; +18.5; +26.8; +9.6 days, respectively. While

Název v anglickém jazyce

The influence of inbreeding depression on reproduction traits - age at first calving in dairy cows

Popis výsledku anglicky

The aim of this study was to evaluate the effect of inbreeding depression on age at first calving in Holstein and Czech Fleckvieh cows. Only cows with a complete pedigree to the fifth generation were used. Data were collected from 34 farms in the Czech Republic. For proper comparison, each inbred cow (n=1046) was assigned to at least one noninbred equal (n=1046). Inbred and noninbred pairs were matched on characteristics such as identical father, first calving interval occurring at the same farm and calves born in the same year and month (± 2 months). The PROC GLM of SAS® with five fixed effects was applied to all data. Inbred Holstein and Czech Fleckvieh cows and their matched noninbred equals were then divided according to inbreeding coefficient into four (event. five) groups. For Holstein inbred groups: FX=1.25; FX=3.125; FX=6.0-12.0; FX=25.0; FX>25; respectively all animals, the following extension of age at first calving was found: +2.7; +6.9; +9.5; +18.5; +26.8; +9.6 days, respectively. While

Druh

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

CEP obor

GG - Chov hospodářských zvířat

OECD FORD obor

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Projekt

<a href="/cs/project/QI91A061" target="_blank" >QI91A061: Vliv rozdílné metabolické aktivity organismu na biologické a oplodňovací charakteristiky gamet dojeného skotu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Bulgarian Journal of Agricultural Science

ISSN

1310-0351

e-ISSN

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Svazek periodika

21

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

680-686

Kód UT WoS článku

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EID výsledku v databázi Scopus

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