| Effects of vitamin E and flaxseed on rumen-derived fatty acid intermediates in beef intramuscular fat. | |
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MedLine Citation:
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PMID: 21345599 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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To elucidate the effects of dietary vitamin E with or without flaxseed on beef fatty acid composition, 80 feedlot steers were fed 4 diets: Control-E (451IUdl-α-tocopheryl acetate/head/day), Control+E (1051IUdl-α-tocopheryl acetate/head/day), Flax-E (10% ground) and Flax+E. Vitamin E had no effect on animal growth or carcass weight (p>0.05), while flaxseed-fed steers had greater average daily gain (p=0.007), final live weight (p=0.005) and heavier carcasses (p=0.012). Feeding flaxseed increased the total n-3 fatty acid content of beef and this response was further accentuated by the inclusion of high levels of vitamin E in the diet. Feeding flax increased levels of some 18:3n-3 partial hydrogenation products including c15- and t13/14-18:1 and several 18:2 isomers (p<0.001) but decreased t10-18:1 (p<0.001). Vitamin E enhanced intramuscular levels of 18:3n-3 and its biohydrogenation products leading to greater accumulations of total n-3 fatty acids in lean ground beef. The consequences of increasing the concentrations of partially hydrogenated products on human health have yet to be investigated. |
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Authors:
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Manuel Juárez; Michael E R Dugan; Jennifer L Aalhus; Noelia Aldai; John A Basarab; Vern S Baron; Tim A McAllister |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-2 |
Journal Detail:
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Title: Meat science Volume: - ISSN: 1873-4138 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101160862 Medline TA: Meat Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Crown Copyright © 2011. Published by Elsevier Ltd. All rights reserved. |
Affiliation:
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Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C & E Trail, Lacombe, AB, Canada T4L 1W1. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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