Uptake of α-tocopherol in porcine plasma and tissues

The effect of feeding α-tocopheryl acetate to pigs on the rate and extent of uptake of α-tocopherol in various tissues was investigated. The rate of iron ascorbate-induced lipid peroxidation was also studied. One hundred and eight Landrace × Large White pigs were assigned at random to one of the fol...

Full description

Saved in:
Bibliographic Details
Published in:Meat science 1996-12, Vol.44 (4), p.275-283
Main Authors: Morrissey, P.A., Buckley, D.J., Sisk, H., Lynch, P.B., Sheehy, P.J.A.
Format: Article
Language:English
Subjects:
animal organs
Animal productions
Biological and medical sciences
blood plasma
body fat
body parts
Feeding. Feeding behavior
Fundamental and applied biological sciences. Psychology
iron
kidneys
lipid peroxidation
skeletal muscle
subcutaneous fat
swine
Terrestrial animal productions
uptake
Vertebrates
Vertebrates: anatomy and physiology, studies on body, several organs or systems
vitamin e acetate
vitamin supplements
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of feeding α-tocopheryl acetate to pigs on the rate and extent of uptake of α-tocopherol in various tissues was investigated. The rate of iron ascorbate-induced lipid peroxidation was also studied. One hundred and eight Landrace × Large White pigs were assigned at random to one of the following barley-based diets: 20 mg α-tocopheryl acetate/kg feed for up to 126 days; 20 mg/kg feed to day 91, followed by 200 mg/kg feed to day 126, or 200 mg/kg feed for up to 126 days: Pigs from each group were slaughtered at specified intervals. For pigs fed the diet supplemented with 200 mg α-tocopheryl acetate/kg feed, α-tocopherol levels increased with increasing supplementation time up to day 126 in all tissues studied. The highest levels of α-tocopherol were observed in kidney fat and subcutaneous fat (inner layer) followed by subcutaneous fat (outer layer), liver, lung, heart, kidney, with muscle and brain containing approximately the same level. The α-tocopherol concentrations in all tissues examined, from pigs fed 200 mg α-tocopheryl acetate/kg feed from weaning to day 126 were greater than those fed the supplemented diet for 35 days. Iron-induced lipid peroxidation was reduced by dietary α-tocopheryl acetate supplementation, and muscle samples from pigs supplemented for 126 days were significantly ( p < 0.05) less susceptible to peroxidation compared to muscle from pigs fed the same supplemented diet for 35 days.
ISSN:0309-1740
1873-4138
DOI:10.1016/S0309-1740(96)00033-2