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Effect of diet, sex and age on fatty acid metabolism in broiler chickens : n-3 and n-6 PUFA

Poureslami, R, Raes, K, Turchini, G. M., Huyghebaert, G. and De Smet, S. 2010, Effect of diet, sex and age on fatty acid metabolism in broiler chickens : n-3 and n-6 PUFA, British journal of nutrition, vol. 104, no. 2, pp. 189-197.

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Title Effect of diet, sex and age on fatty acid metabolism in broiler chickens : n-3 and n-6 PUFA
Formatted title Effect of diet, sex and age on fatty acid metabolism in broiler chickens : n-3 and n-6 PUFA
Author(s) Poureslami, R
Raes, K
Turchini, G. M.
Huyghebaert, G.
De Smet, S.
Journal name British journal of nutrition
Volume number 104
Issue number 2
Start page 189
End page 197
Publisher Cambridge University Press
Place of publication Cambridge, England
Publication date 2010
ISSN 0007-1145
1475-2662
0954-4224
Keyword(s) PUFA
broiler chickens
elongation
desaturation
oxidation
Summary The PUFA metabolism in broiler chicken was studied through the whole body fatty acid balance method. Four dietary lipid sources (palm fat, Palm; soyabean oil, Soya; linseed oil, Lin; fish oil, Fish) were added at 3% to a basal diet containing 5% palm fat. Diets were fed to female and male birds from day 1 to either day 21 or day 42 of age. Birds fed the Lin diet showed a significantly higher 18 : 2n-6 accumulation compared with the other diets (85·2 v. 73·6% of net intake), whereas diet did not affect 18 : 3n-3 accumulation (mean 63% of net intake). Bioconversion of 18 : 2n-6 significantly decreased in the order Palm.> Lin > Soya > Fish (4·7, 3·9, 3·4 and 1% of net intake, respectively). The 18 : 3n-3 bioconversion on the Palm and Soya diets was similar and significantly higher than in broilers on the Lin diet (9·1 v. 5·8% of net intake). The β-oxidation of 18 : 2n-6 was significantly lower on the Lin diet than on the other diets (10·8 v. 23·3% of net intake), whereasβ-oxidation of 18 : 3n-3 was significantly higher on the Fish diet than on the other diets (41·5 v. 27·3% of net intake). Feeding fish oil suppressed apparent elongase and desaturase activity, whereas a higher dietary supply of 18 : 3n-3 and 18 : 2n-6 enhanced apparent elongation and desaturation activity on the PUFA involved in the n-3 and n-6 pathway, respectively. Accumulation of 18 : 2n-6 and 18 : 3n-3 increased andβ -oxidation decreased with age. Sex had a marginal effect on the PUFA metabolism.
Language eng
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
Socio Economic Objective 830309 Poultry
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30029488

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Tue, 03 Aug 2010, 16:27:23 EST by Teresa Treffry