| Contributions of genetic and environmental components to changes in phenotypic variation between generations. | |
| | |
MedLine Citation:
|
PMID: 20646112 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
We evaluate the extent to which changes in phenotypic variation among generations of populations kept in the same environment are due to changes in genetic (V(A)) or in environmental (V(E)) variance. Data were available on body weight of adult poultry on a total of 89186 birds (mainly females) from six generations of each of seven lines of layers. There was substantial heterogeneity of variation between generations, shown to be in both V(A) and V(E) components. Based on the Akaike information criterion (AIC), the best fit was with both components changing, and a better fit was obtained if V(A)/V(E) (i.e. heritability) or V(E), rather than V(A), was assumed constant. In analyses of quantitative genetic data spanning environmental groups, attention should be paid to whether and how the variance components change among groups before undertaking detailed variance partition that may be sensitive to such changes. |
| | |
Authors:
|
A Wolc; I M S White; M Lisowski; W G Hill |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie Volume: 127 ISSN: 1439-0388 ISO Abbreviation: J. Anim. Breed. Genet. Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-07-21 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100955807 Medline TA: J Anim Breed Genet Country: Germany |
Other Details:
|
Languages: eng Pagination: 255-60 Citation Subset: IM |
Affiliation:
|
Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Poznan, Poland. awolc@jay.up.poznan.pl |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Dynamic methylation and expression of Oct4 in early neural stem cells.
Next Document: Comparison of repeatability and multiple trait threshold models for litter size in sheep using obser...