Genetic parameters for fatty acid traits of beef in Australian Angus

Title
Genetic parameters for fatty acid traits of beef in Australian Angus
Publication Date
2022
Author(s)
Duff, C J
( author )
OrcID: https://orcid.org/0000-0002-3072-1736
Email: cduff2@myune.edu.au
UNE Id une-id:cduff2
Samaraweera, A M
( author )
OrcID: https://orcid.org/0000-0002-8644-8345
Email: asamara2@une.edu.au
UNE Id une-id:asamara2
McGilchrist, P
( author )
OrcID: https://orcid.org/0000-0003-3265-1134
Email: pmcgilc2@une.edu.au
UNE Id une-id:pmcgilc2
Clark, S A
( author )
OrcID: https://orcid.org/0000-0001-8605-1738
Email: sclark37@une.edu.au
UNE Id une-id:sclark37
Editor
Editor(s): R F Veerkamp and Y de Haas
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
Wageningen Academic
Place of publication
Wageningen, The Netherlands
DOI
10.3920/978-90-8686-940-4_654
UNE publication id
une:1959.11/55421
Abstract
Preliminary genetic and phenotypic parameters were estimated for fatty acid traits in feedlot finished Australian Angus cattle. This included the relationships between saturated fatty acids (SAT), monounsaturated fatty acids (MONO) and polyunsaturated fatty acids (PUFA), with carcase weight (CWT), carcase rump fat (CP8) and carcase intramuscular fat (CIMF). All fatty acid traits showed phenotypic variation, with a considerable portion attributed to genetics as shown by heritabilities for SAT, MONO and PUFA of 0.64±0.11, 0.67±0.12 and 0.25±0.09 respectively. SAT had moderate negative genetic correlation with CWT, CP8 and CIMF (-0.30±0.16, -0.21±0.17 and -0.38±0.14 respectively), while MONO and PUFA have moderate positive genetic correlation with CWT, CP8 and CIMF ranging from 0.14±0.17 to 0.46±0.22. The results show that the proportion of MONO and PUFA can be increased, and SAT decreased, in intramuscular fat through selection. Importantly, this can be achieved without being detrimental to carcase weight, carcase rump fat or total intramuscular fat.
Link
Citation
Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP), p. 2700-2703
ISBN
9789086869404
Start page
2700
End page
2703
Rights
Attribution 4.0 International

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