Estimation of genetic parameters for litter size in Charollais, Romney, Merinolandschaf, Romanov, Suffolk, Sumava and Texel breeds of sheep

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F14%3A64377" target="_blank" >RIV/60460709:41210/14:64377 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00027014:_____/14:#0002019

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 litter size in Charollais, Romney, Merinolandschaf, Romanov, Suffolk, Sumava and Texel breeds of sheep

Popis výsledku v původním jazyce

The objective of this investigation was to estimate genetic parameters for litter size in Charollais, Romney, Merinolandschaf, Romanov, Suffolk, Sumava and Texel breeds of sheep. These breeds account for more than three quarters of the recorded sheep population in the Czech Republic. A total of 143,896 lambing records from 1990 to 2012 were analyzed. Variance components and genetic parameters for litter size were estimated separately for each breed using the animal model with repeatability. The model equation contained ewe age as a fixed effect and random effects of contemporary group, permanent environment and direct additive genetic effect of the animal. Estimates of phenotype variance (sigma(2)(P)) increased across breeds (0.236 for Sumava to 0.779for Romanov) with increasing breed average for number of lambs per litter. Variance component estimates for permanent environmental effect of the ewe were low (0.0001-0.0262). The variance of common environment of contemporary group (sigm

Název v anglickém jazyce

Estimation of genetic parameters for litter size in Charollais, Romney, Merinolandschaf, Romanov, Suffolk, Sumava and Texel breeds of sheep

Popis výsledku anglicky

The objective of this investigation was to estimate genetic parameters for litter size in Charollais, Romney, Merinolandschaf, Romanov, Suffolk, Sumava and Texel breeds of sheep. These breeds account for more than three quarters of the recorded sheep population in the Czech Republic. A total of 143,896 lambing records from 1990 to 2012 were analyzed. Variance components and genetic parameters for litter size were estimated separately for each breed using the animal model with repeatability. The model equation contained ewe age as a fixed effect and random effects of contemporary group, permanent environment and direct additive genetic effect of the animal. Estimates of phenotype variance (sigma(2)(P)) increased across breeds (0.236 for Sumava to 0.779for Romanov) with increasing breed average for number of lambs per litter. Variance component estimates for permanent environmental effect of the ewe were low (0.0001-0.0262). The variance of common environment of contemporary group (sigm

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/QJ1310184" target="_blank" >QJ1310184: Šlechtění na přežitelnost mláďat v chovu ovcí a masného skotu</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Small Ruminant Research

ISSN

0921-4488

e-ISSN

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Svazek periodika

119

Číslo periodika v rámci svazku

1-3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

33-38

Kód UT WoS článku

000336346600006

EID výsledku v databázi Scopus

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