Alpha-tocopherol concentrations in serum and tissues of sheep fed different sources of vitamin E
Article Abstract:
Tissue uptake and retention in sheep supplemented with different forms of vitamin E supplement were evaluated. Peak serum concentrations of alpha-tocopherol were generally reached on day 3, although some preparations peaked earlier. Tissue concentrations in all experimental groups was higher than the controls, except for the pancreas and heart. The level of alpha-tocopherol was highest in the liver, followed by the pancreas. Alcohol forms of vitamin E produced higher serum concentrations than acetate products. Either form, however, is satisfactory for supplemental use.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Serum alpha-tocopherol concentration in sheep after intramuscular injection ofdl-alpha-tocopherol
Article Abstract:
The kinetics of alpha-tocopherol after a single intramuscular administration were investigated using four dosage levels. Time-to-peak concentration averaged 9.8 hours, and the increment of rise of the serum level was found to be dosage-dependent. After peaking, serum levels showed a linear, time-dependent decline to pretreatment values. The elevated serum levels were observed up to 77 hours after administration. The rates of elimination were similar for all dose levels. Whether this was due to tissue absorption or systemic elimination is uncertain.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Bioavailability of vitamin E compounds in lambs
Article Abstract:
The bioavailability of eight treatments of vitamin E supplementation were evaluated in lambs. The combination of d-alpha-tocopheryl acetate and d-alpha-tocopheryl polyethylene glycol-1,000 succinate (TPGS) produced the highest serum concentration, followed by d-alpha-tocopheryl acetate. TPGS is postulated to enhance the absorption of the acetate by facilitating emulsification and micellar formation.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
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