Main content

Opportunities for Carcass Trait Genetic Improvement of Canadian Heavy Lambs

Show full item record

Title: Opportunities for Carcass Trait Genetic Improvement of Canadian Heavy Lambs
Author: Massender, Erin
Department: Department of Animal Biosciences
Program: Animal and Poultry Science
Advisor: Schenkel, FlávioCánovas, Angela
Abstract: Carcass yield and quality have a major impact on the profitability of meat lamb production. This thesis presents the first genetic parameter estimates for carcass traits in a Canadian heavy lamb population, as well as their relationship with economically important growth and ultrasound traits. The impact of alternative slaughter end points was also evaluated. Finally, the value of including carcass traits in existing terminal sire selection indexes was assessed. Carcass yield and quality traits were found to be moderately heritable and substantial genetic improvement was expected through selection. Alternative slaughter end points had little impact on heritability estimates, but did have an effect on the magnitude and direction of genetic correlations. The inclusion of hot carcass weight in existing terminal sire selection indexes was found to increase the accuracy and efficiency of selection, but further research is needed to determine optimal methods to improve carcass quality traits.
URI: http://hdl.handle.net/10214/12979
Date: 2018-05
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.


Files in this item

Files Size Format View Description
Massender_Erin_201805_MSc.pdf 1.752Mb PDF View/Open Final Thesis

This item appears in the following Collection(s)

Show full item record