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Title: Genetic and environmental effects on the muscle structure response post-mortem
Contributor(s): Thompson, John Mitchell (author); Perry, Diana (author); Daly, Briana Louise (author); Gardner, G E (author); Johnston, David (author); Pethick, D W (author)
Publication Date: 2006
DOI: 10.1016/j.meatsci.2006.04.022
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Abstract: This paper reviewed the mechanisms by which glycolytic rate and pre-rigor stretching of muscle impact on meat quality. If muscle is free to shorten during the rigor process extremes in glycolytic rate can impact negatively on meat quality by inducing either cold or rigor shortening. Factors that contribute to variation in glycolytic rate include the glycogen concentration at slaughter and fibre type of the muscle. Glycolysis is highly sensitive to temperature, which is an important factor in heavy grain fed carcasses. An alternative solution to controlling glycolysis is to stretch the muscle pre-rigor so that it cannot shorten, thus providing an insurance against extremes in processing conditions. Results are presented which show a large reduction in variance (both additive and phenotypic) in tenderness caused by pre-rigor stretching. Whilst this did not impact on the heritability of shear force, it did reduce genotype differences. The implications of these results on the magnitude of genotype effects on tenderness is discussed.
Publication Type: Journal Article
Source of Publication: Meat Science, 74(1), p. 59-65
Publisher: Elsevier BV
Place of Publication: Netherlands
ISSN: 0309-1740
Field of Research (FOR): 070207 Humane Animal Treatment
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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