Resilience, tolerance, robustness and genotype x environment interaction in Merino sheep breeding

Author(s)
Dominik, Sonja
Swan, Andrew
Publication Date
2014
Abstract
The concepts of environmental resilience, robustness and tolerance in domestic livestock species are discussed in general and illustrated using specific examples from the Australian Merino industry. It is discussed how these concepts relate to the more commonly known notion of genotype x environment (GxE) interaction. The Merino sheep breed consists of genetic strains that have been selected for suitability to specific environments and has reached a high level of pecification for quality wool production. At the same time Merino sheep produce across a wide range of climatic environments and next to wool contribute substantially to Australia's prime lamb production. By gathering scientific and anecdotal evidence, it is explored if the Merino sheep breed is resilient, robust or tolerant to environmental fluctuations, including the environmental differences that are generated by the stud and commercial sector. It is outlined how GxE interaction is currently considered in MERINOSELECT, the national genetic evaluation system for Merino sheep, and future opportunities to consider environmental resilience, robustness or tolerance in livestock breeding programs.
Citation
Breeding Focus 2014 - Improving Resilience, p. 115-127
ISBN
9781921597664
9781921597657
Link
Language
en
Publisher
University of New England, Animal Genetics and Breeding Unit
Edition
1
Title
Resilience, tolerance, robustness and genotype x environment interaction in Merino sheep breeding
Type of document
Book Chapter
Entity Type
Publication

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