Alpha-tocopherol transfer efficiency and lipid oxidation in fresh and spray-dried eggs enriched with omega3-polyunsaturated fatty acids

Poult Sci. 2001 Oct;80(10):1496-505. doi: 10.1093/ps/80.10.1496.

Abstract

We evaluated the effect of supplementing a basal diet containing 5% linseed oil with 0, 50, 100, and 200 mg/kg of alpha-tocopheryl acetate (alpha-TA) on alpha-tocopherol content, fatty acid composition, and lipid oxidation in fresh and spray-dried eggs during storage. Alpha-tocopherol transfer efficiency from feed to egg was also studied. The alpha-tocopherol content of fresh egg increased in a dose-dependent manner (16.6, 49.8, 78.9, and 132.3 microg/g of egg for 0, 50, 100, and 200 mg/kg alpha-TA supplementation, respectively), but transfer efficiency decreased, from 41.8% to 26.7%, with increasing alpha-tocopherol content in the diet. Spray-drying significantly decreased the alpha-tocopherol content of eggs and increased lipid oxidation. Dietary supplementation with different levels of alpha-TA significantly reduced lipid oxidation in spray-dried eggs. Alpha-TA supplementation had no significant effect on the fatty acid composition of fresh eggs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animal Feed
  • Animals
  • Antioxidants / administration & dosage*
  • Antioxidants / metabolism
  • Chickens / physiology*
  • Dietary Supplements
  • Dose-Response Relationship, Drug
  • Eggs / analysis*
  • Fatty Acids, Omega-3 / analysis*
  • Female
  • Food Handling / methods
  • Linseed Oil
  • Lipid Metabolism*
  • Lipids / analysis
  • Oviposition
  • Oxidation-Reduction
  • alpha-Tocopherol / administration & dosage*
  • alpha-Tocopherol / metabolism

Substances

  • Antioxidants
  • Fatty Acids, Omega-3
  • Lipids
  • Linseed Oil
  • alpha-Tocopherol