Document Detail

Comparison of index selection and best linear unbiased prediction for simulated layer poultry data.
MedLine Citation:
PMID:  8559719     Owner:  NLM     Status:  MEDLINE    
The advantage of using best linear unbiased prediction (BLUP) of breeding value over different selection indexes was examined for a sex-limited trait in a simulated layer poultry population. The base breeding population consisted of 30 males and 300 females that were unrelated to each other. Heritability for different analyses was assumed to be either .1, .2, or .5. Each generation was reproduced from two hatches each year, with a hatch variance of 3.165% of the phenotypic variance, except for one simulation, in which it was assumed to be 40% to test the effect of a large fixed effect. Parents were selected on 1) BLUP of breeding value, 2) optimum selection index (individual, full-, and half-sibs), 3) classical selection index (as for optimum, but index weight constant across generations), 4) reduced selection index (individual and full-sibs only), or 5) combination of classical and BLUP. The relative selection response with the selection indices compared to the BLUP estimates (except for the reduced selection index) were from 94.5 to 99.4% of BLUP. Inbreeding was higher in the BLUP selected populations, which could offset any advantage of BLUP if the populations were structured so that inbreeding could rise too rapidly.
M G Jeyaruban; J P Gibson; R S Gowe
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  74     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1995 Oct 
Date Detail:
Created Date:  1996-02-28     Completed Date:  1996-02-28     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1566-76     Citation Subset:  IM    
Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.
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MeSH Terms
Chickens / genetics*
Genetic Variation / genetics*
Models, Genetic
Selection, Genetic*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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