title: The effect of vitamin D(3) supplementation on texture and oxidative stability of beef loins from steers treated with zilpaterol hydrochloride.
abstract: 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% O(2)/30% CO(2)) 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.
authors: Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
authors: Stine
authors: S
authors: Hansen
authors: Lorinda
authors: L
authors: Frylinck
authors: Phillip E
authors: PE
authors: Strydom
mesh_terms: D000273:Adipose Tissue / Q000187:drug effects / Q000502:physiology; D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D002762:Cholecalciferol / Q000494:pharmacology*; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D008297:Male; D008460:Meat / Q000592:standards*; D018482:Muscle, Skeletal / Q000187:drug effects / Q000502:physiology; D009210:Myofibrils; D017392:Thiobarbituric Acid Reactive Substances; D014297:Trimethylsilyl Compounds / Q000494:pharmacology*
chemical_list: D017392:Thiobarbituric Acid Reactive Substances; D014297:Trimethylsilyl Compounds; C475840:Zilpaterol; D002762:Cholecalciferol