| Feeding co-extruded flaxseed to pigs: effects of duration and feeding level on growth performance and backfat fatty acid composition of grower-finisher pigs. | |
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MedLine Citation:
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PMID: 20374827 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To examine the effect of co-extrusion on subsequent n-3 fatty acids in pig tissues, 8 pigs (barrows and gilts) were assigned to either a control treatment or one of nine treatments arranged in a 3 x 3 factorial design with 3 levels of co-extruded flaxseed (5%, 10% and 15%) and 3 durations of feeding (4, 8 and 12 weeks). Feed conversion improved slightly (P=0.01) with increasing dietary flaxseed but feeding flax for more than 8 weeks reduced average daily gain (P=0.02). In general, the duration and level of co-extruded flaxseed feeding affected (P<0.05) most fatty acids except for 22:6n-3 (P>0.05). Increasing the duration of flax feeding led to significant quadratic effects in backfat 18:3n-3 (P<0.001) and total n-3 fatty acids (P=0.002) when feeding 5% co-extruded flaxseed. Those increases were linear (P<0.001) when feeding 10% and 15% co-extruded flaxseed. Consequently feeding higher levels of flax for shorter periods vs. lower levels for longer periods appears to be more efficient at increasing n-3 fatty acids in pig backfat, but increases appeared to be less consistent. Moreover the addition of a 50:50 mix of extruded flax/peas to pig diets provided a highly available source of 18:3n-3 yielding n-3 fatty acid enrichments in backfat comparable to studies where extracted flaxseed oil was fed. Feeding flax co-extruded with field peas can be used to optimize consistent enrichments of n-3 fatty acids in back fat and relatively small amounts of this fat could be used to manufacture pork products to meet Canadian standards for n-3 fatty acid enrichment. |
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Authors:
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M Juárez; M E R Dugan; N Aldai; J L Aalhus; J F Patience; R T Zijlstra; A D Beaulieu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-20 |
Journal Detail:
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Title: Meat science Volume: 84 ISSN: 1873-4138 ISO Abbreviation: Meat Sci. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-04-08 Completed Date: 2010-07-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101160862 Medline TA: Meat Sci Country: England |
Other Details:
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Languages: eng Pagination: 578-84 Citation Subset: IM |
Copyright Information:
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Crown Copyright 2009. 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, Alberta, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adipose Tissue* Animal Feed Animals Body Weight Castration Dietary Fats / metabolism* Fabaceae Fatty Acids, Omega-3 / metabolism* Female Flax* Male Meat* Plant Oils / metabolism* Seeds Swine / growth & development*, metabolism Weight Gain |
| Chemical | |
Reg. No./Substance:
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0/Dietary Fats; 0/Fatty Acids, Omega-3; 0/Plant Oils |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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