Journal
MEAT SCIENCE
Volume 90, Issue 1, Pages 145-151Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2011.06.014
Keywords
Zilpaterol; Vitamin D-3; Modified atmosphere packaging; Colour; Oxidation; Meat tenderness
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Funding
- THIRIP
- RMRDT
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In this study, 10 young steers received no beta agonist (C), 50 animals all received zilpaterol hydrochloride (Z), with 1 group receiving Z while the other 4 groups received Z and vitamin D-3 at the following levels (IU/animal /day) and durations before slaughter: 7 million for 3 days (3D7M) or 6 days (6D7M), 7 million for 6 days with 7 days no supplementation (6D7M7N) and 1 million for 9 days (9D1M). LD samples were vacuum-aged 14 days post mortem, and repacked in high-oxygen modified atmosphere (70% D-2/30% CO2) for a further 7 days. Parameters included Warner Bratzler shear force (WBSF), myofibril fragment length, thiobarbituric acid reactive substances, free thiol levels, muscle fat, and instrumental colour parameters. When allowing for a conversion period of vitamin D-3 to its active metabolites, supplementing the zilpaterol treated steers with a high dosage of vitamin D-3 (6D7M7N) resulted in improved colour stability, higher stability towards protein oxidation and lower stability towards lipid oxidation. (C) 2011 Elsevier Ltd. All rights reserved.
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