Transcriptonal Analysis of Ovine M. Longissmus Thoracis Et Lumborum for Genes Involved in Carcass and Meat Quality Traits

T. Alam; V. de Campos; J.P. Hanrahan; P. Allen; T.W.J. Keady; R.M. Hamill; T. Sweeney

Transcriptonal Analysis of Ovine M. Longissmus Thoracis Et Lumborum for Genes Involved in Carcass and Meat Quality Traits

In: 63rd International Congress of Meat Science and Technology

Authors:

T. Alam

T. Alam ¹School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland

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V. de Campos

V. de Campos ¹School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland

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J.P. Hanrahan

J.P. Hanrahan ²Department of Food Quality and Sensory Science, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland

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P. Allen

P. Allen ²Department of Food Quality and Sensory Science, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland

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T.W.J. Keady

T.W.J. Keady ³Teagasc Animal & Grassland Research and Innovation Centre, Mellows Campus, Athenry, Co. Galway, Ireland; torres.sweeney@ucd.ie

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R.M. Hamill

R.M. Hamill ²Department of Food Quality and Sensory Science, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland

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, and

T. Sweeney

T. Sweeney ¹School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland

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Type:: Chapter

Pages:: 75–76

DOI:: https://doi.org/10.3920/9789086868605_022

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The identification of regulatory genetic polymorphisms robustly associated with carcass and meat quality traits has the potential to enhance the rate of genetic gain in lamb quality through genomic selection programmes. The objective of this experiment was to identify differentially expressed genes (DEGs) in the M. longissimus thoracis et lumborum (LTL) from twin lambs that had divergent fatness phenotypes. Carcass and meat quality traits were measured on 64 pairs of lambs that were sired by rams from terminal-sire breeds. An index of fatness, based on subcutaneous fat depth, carcass fat score, and the concentrations of fat and moisture in samples of LTL, was used to identify the 10 twin pairs exhibiting the greatest within-pair divergence in fatness. The expression profile of 34 genes known to be involved in fat metabolism was evaluated for this study. Five genes (ADIPOQ, MMP1, MSTN, LDLR, LPL) with within-litter differential expression profiles (P<0.05) were identified. The promoter region of each of these genes is currently being sequenced to identify functional SNPs for use in future breeding programmes.

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

E-Book ISBN:: 9789086868605

Publisher:: Wageningen Academic

Print Publication Date:: 15 Nov 2017

Subjects
- Life Sciences

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Transcriptonal Analysis of Ovine M. Longissmus Thoracis Et Lumborum for Genes Involved in Carcass and Meat Quality Traits

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

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