Multibreed genomic evaluation for sensory eating quality of lamb using consumer assessments

Title
Multibreed genomic evaluation for sensory eating quality of lamb using consumer assessments
Publication Date
2025-06
Author(s)
Brown, D J
( author )
OrcID: https://orcid.org/0000-0002-4786-7563
Email: dbrown2@une.edu.au
UNE Id une-id:dbrown2
Guy, S Z Y
( author )
OrcID: https://orcid.org/0000-0002-5553-1808
Email: sguy6@une.edu.au
UNE Id une-id:sguy6
Mortimer, S I
Pannier, L
McGilchrist, P
( author )
OrcID: https://orcid.org/0000-0003-3265-1134
Email: pmcgilc2@une.edu.au
UNE Id une-id:pmcgilc2
Pethick, D
Swan, A A
( author )
OrcID: https://orcid.org/0000-0001-8048-3169
Email: aswan@une.edu.au
UNE Id une-id:aswan
Editor
Editor(s): Sue Hatcher
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
Association for the Advancement of Animal Breeding and Genetics
Place of publication
Armidale, Australia
UNE publication id
une:1959.11/71581
Abstract

This paper reports updated genetic parameter estimates for correlations between consumer eating quality and carcase traits for Australian sheep. Seven consumer sensory-assessment traits (tenderness, flavour, juiciness, smell, overall liking, star rating and MQ4 index) were collected on loin and topside cuts (n ~ 6,500). Heritability estimates (2) were low to moderate for these traits (0.09 < 2 < 0.26), with the topside cut having slightly more genetic variation than the loin. Genetic correlations (𝑟̂ g) between sensory traits were high within cuts (𝑟̂ g > 0.96) and across cuts (𝑟̂ g > 0.73). There were moderate to high genetic correlations between the consumer sensory and the objective eating quality traits (intramuscular fat and shear force), and low to weakly negative correlations between the sensory traits and carcase lean meat yield. These estimates will be used to revise selection indexes and develop breeding values for consumer eating quality.

Link
Citation
Proceedings of the AAABG 26th Conference, p. 343-346
ISSN
1328-3227
Start page
343
End page
346

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