Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/3719
Title: Neglecting genotype x environment interaction results in biased predictions from selection index calculations
Contributor(s): Dominik, Sonja  (author)orcid ; Kinghorn, Brian  (author)
Publication Date: 2008
DOI: 10.1016/j.livsci.2007.05.004
Handle Link: https://hdl.handle.net/1959.11/3719
Abstract: This study investigated effects of neglecting genotype × environment (G × E) interaction on the efficiency of index selection, genetic gain and dollar response. Two indices were established. Index P (P for practical) represents an index that would be used in practice. It assumed that no effects of G × E interactions were present. Index T (T for true) accounted for a prevailing level of G × E interactions in a real data set. Since the true underlying genetic parameters of the data set were unknown, different instances of possible G × E interaction levels for Index T were generated through a sampling procedure. The average difference between the genetic correlations used in Index P and T reduced the efficiency of Index P by between 1% and 24.8%. The total dollar response per year was on average 33% overpredicted, but this could be as high as 114%. Larger differences between the correlations resulted in higher variation in efficiency. Larger G × E interactions resulted in larger overpredictions in total dollar response. The effects of not accommodating or assuming the wrong extent of G × E interaction can be considerable in index calculations.
Publication Type: Journal Article
Source of Publication: Livestock Science, 114(2-3), p. 233-240
Publisher: Elsevier BV
Place of Publication: Netherlands
ISSN: 1871-1413
Fields of Research (FoR) 2008: 070201 Animal Breeding
Socio-Economic Objective (SEO) 2008: 830311 Sheep - Wool
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record

SCOPUSTM   
Citations

13
checked on Jul 6, 2024

Page view(s)

1,376
checked on Feb 4, 2024
Google Media

Google ScholarTM

Check

Altmetric


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.