Use of 25-hydroxyvitamin D3 and vitamin E to improve tenderness of beef from the longissimus dorsi of heifers

Thumbnail Image
Date
2008-07-01
Authors
Carnagey, Kristen
Trenkle, Allen
Wertz-Lutz, A.
Horst, Ronald
Beitz, Donald
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Organizational Unit
Animal Science

The Department of Animal Science originally concerned itself with teaching the selection, breeding, feeding and care of livestock. Today it continues this study of the symbiotic relationship between animals and humans, with practical focuses on agribusiness, science, and animal management.

History
The Department of Animal Husbandry was established in 1898. The name of the department was changed to the Department of Animal Science in 1962. The Department of Poultry Science was merged into the department in 1971.

Historical Names

Journal Issue
Is Version Of
Versions
Series
Department
Abstract

The objective of this trial was to determine whether a single bolus of 25-hydroxyvitamin D3 (25-OH D3), vitamin E, or a combination of the 2 would improve the tenderness of steaks from the LM of beef heifers. Forty-eight Angus crossbred heifers were allotted randomly to 8 pens. Six heifers were in each pen, and there were 2 pens per treatment. The 4 treatments included control (no 25-OH D3 or vitamin E); 25-OH D3 (500 mg of 25-OH D3 administered as a one-time oral bolus 7 d before slaughter); vitamin E (1,000 IU of vitamin E administered daily as a top-dress for 104 d before slaughter); or combination (500 mg of 25-OH D3administered as a one-time oral bolus 7 d before slaughter and 1,000 IU of vitamin E administered daily as a top-dress for 104 d before slaughter). Blood samples were obtained on the day that heifers were allotted to treatments, on the day 25-OH D3 was administered, and on the day before slaughter. Plasma calcium concentration was increased when 25-OH D3 was administered with or without vitamin E (P < 0.007). In LM, calcium concentration tended to increase (P = 0.10) when 25-OH D3 was administered alone but not when 25-OH D3 was administered with vitamin E. Concentrations of 25-OH D3 and 1,25-dihydroxyvitamin D3 in plasma were increased when 25-OH D3 was administered with or without vitamin E (P < 0.001). Steaks from heifers treated with 25-OH D3or vitamin E, but not both, tended to have lower Warner-Bratzler shear force than steaks in the control group at 14 d postmortem (P = 0.08). Postmortem protein degradation as measured by Western blot of the 30-kDa degradation product of troponin-T was increased with all treatments after 3 d postmortem (P ≤ 0.07), but not at 7 or 14 d postmortem. Unexpectedly, the use of 500 mg of 25-OH D3 fed as an oral bolus 7 d before slaughter or 1,000 IU of vitamin E administered daily for 104 d before slaughter alone, but not in combination, effectively decreased Warner-Bratzler shear force.

Comments

This article is from Journal of Animal Science 86 (2008): 1649–1657, doi:10.2527/jas.2007-0502. Posted with permission.

Description
Keywords
Citation
DOI
Copyright
Collections