Document Detail


Feeding co-extruded flaxseed to pigs: effects of duration and feeding level on growth performance and backfat fatty acid composition of grower-finisher pigs.
MedLine Citation:
PMID:  20374827     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
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:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-10-20
Journal Detail:
Title:  Meat science     Volume:  84     ISSN:  1873-4138     ISO Abbreviation:  Meat Sci.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-04-08     Completed Date:  2010-07-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101160862     Medline TA:  Meat Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  578-84     Citation Subset:  IM    
Copyright Information:
Crown Copyright 2009. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C & E Trail, Lacombe, Alberta, Canada.
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MeSH Terms
Descriptor/Qualifier:
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:
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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