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Updated: May 27, 2026
Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
Published on: July 12, 2024
Tenderness and oxidative stability of post-mortem muscles from mature cows of various ages
Youling L Xiong1, Oliver E Mullins, John F Stika
1Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA; College of Food Science, Southern Yangtze University, Wuxi, Jiangsu 214036, China.
Abstract:
Two experiments were conducted to investigate the influence of age of mature cows (2-4yr, 6-8yr, and 10-12yr cows; n=6 in each) on beef quality. In Experiment 1, Longissimus dorsi (LD) steaks were stored at 3°C for 0-10d. Steaks from more mature cows had an increased (P<0.05) Warner-Bratzler shear force (WBSF) and a slower troponin-T post-mortem degradation. Storage reduced WBSF in all steak samples regardless of animal age. In Experiment 2, Semitendinosus (ST) and Semimembranosus (SM) patties were stored at 3°C for 0-7d simulating retail display. The rate of lipid oxidation during storage increased with animal age (P<0.05) and was greater in ST than in SM patties. However, myoglobin oxidation was minimally affected by animal age. Thus, advanced maturation not only intensified cow meat toughness but also lowered its oxidative stability.
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