Estimation of genetic parameters and evaluation of test-day milk production in sheep

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F12%3A56755" target="_blank" >RIV/60460709:41210/12:56755 - isvavai.cz</a>

Alternative codes found

RIV/00027014:_____/12:#0001692

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Estimation of genetic parameters and evaluation of test-day milk production in sheep

Original language description

Genetic parameters and breeding values were estimated based on 11 708 daily milk yields from 2255 lactations (1351 sheep, 19 different flocks) between the years 2004 and 2010. The pedigree covered 2334 individuals, including both the recorded animals andtheir known ancestors. The fixed effects were estimated by the least-squares method, while the genetic parameters were estimated by the REML method. The data were tested by 49 models, but on the basis of the coefficient-of-determination value and the significance of the effects, only 10 models were used for REML analysis. The most suitable model was chosen on the basis of the breeding values distribution and the heritability of daily milk production, which was estimated at 0.28. The fixed effects of the flock parity number, the flock test day, and the linear and quadratic coefficients of flock's days-in-milk in the chosen model were all highly significant (P < 0.0001) for the test-day milk yield. The breeding values had a normal distri

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GI - Farm animal breeding and farm animal pedigree breeding

OECD FORD branch

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Project

<a href="/en/project/QH91271" target="_blank" >QH91271: Designing of breeding programmes for dairy sheep with special impact on morphological and functional characteristics of udders.</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2012

Confidentiality

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

Name of the periodical

Czech Journal of Animal Science

ISSN

1212-1819

e-ISSN

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Volume of the periodical

57

Issue of the periodical within the volume

11

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

522-528

UT code for WoS article

000311401100004

EID of the result in the Scopus database

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