750
Genomic Inbreeding Coefficients in a Sample of Canadian Beef Cattle Breeds

Monday, August 18, 2014
Posters (The Westin Bayshore)
Duc Lu , University of Alberta, Edmonton, AB, Canada
John Crowley , University of Alberta, Edmonton, AB, Canada
Changxi Li , Agriculture and Agri-Food Canada, Edmonton, AB, Canada
Colin Coros , Delta Genomics Centre, Edmonton, AB, Canada
Mary DePauw , University of Alberta, Edmonton, AB, Canada
Graham S. Plastow , University of Alberta, Edmonton, AB, Canada
Stephen S. Moore , The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, St Lucia, Australia
Stephen P Miller , Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
Paul Stothard , University of Alberta, Edmonton, AB, Canada
Abstract Text: Genomic inbreeding coefficients (Fi) were estimated for 1515 Angus (AN), 1387 Charolais (CH), 549 Simmental (SM), and 430 Hereford (HE). Fi in this sample of AN and CH remained relatively stable at around 12.48% and 11.95%, respectively, between 2001 and 2013. AN and CH from the research centres had slightly lower Fi compared to those from their respective breed associations. The SM animals born between 2001- 2013 had higher Fi (15.32%) than AN and CH year mates. The HE animals had the highest Fi at all times, averaged at 28.91%. Inbreeding depression for average daily gain (ADG) was also investigated in a multibreed and crossbred population of beef cattle. No statistically significant dependence between ADG and Fi was found.

Keywords: Beef cattle, Genomic inbreeding, Single nucleotide polymorphism

See more of: Posters: Beef Cattle Breeding (Group 3)
See more of: Species Breeding: Beef cattle
<< Previous Abstract | Next Abstract >>