Robust GMACE for young bulls – application to data

Authors

  • Jette H. Jakobsen Interbull Centre, SLU, Uppsala
  • Peter G. Sullivan Canadian Dairy Network, Guelph, ON

Keywords:

genomics, international evaluation, MACE, GMACE

Abstract

A robust GMACE method was applied to genomically enhanced breeding values (GEBVs) of young bulls for the five key traits protein, stature, somatic cell score, longevity and female fertility (cc1). Eleven countries participated with GEBVs and conventional breeding values of progeny tested bulls were included from all countries currently subscribing to International Genetic Bull Evaluations. The robust GMACE procedure constrained ratios of genomic standard deviation relative to traditional standard deviation (SD-ratio) to be in the range of 0.80 to 1.20. This restriction changed the bull rankings and number of genomically tested young bulls on the top-100 lists especially for country-trait combinations far from the constraint of 0.80 to 1.20.

Downloads

Published

2012-07-18

Issue

No. 45 (2012): Proceedings of the 2012 Interbull technical workshop

Section

Articles

License

Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

 

    1. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

 

    1. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).