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Effect of diet, sex and age on fatty acid metabolism in broiler chickens : SFA and MUFA

Poureslami, R., Turchini, G. M., Raes, K., Huyghebaert, G. and De Smet, S. 2010, Effect of diet, sex and age on fatty acid metabolism in broiler chickens : SFA and MUFA, British journal of nutrition, vol. 104, no. 2, pp. 204-213.

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Title Effect of diet, sex and age on fatty acid metabolism in broiler chickens : SFA and MUFA
Author(s) Poureslami, R.
Turchini, G. M.
Raes, K.
Huyghebaert, G.
De Smet, S.
Journal name British journal of nutrition
Volume number 104
Issue number 2
Start page 204
End page 213
Publisher Cambridge University Press
Place of publication Cambridge, England
Publication date 2010
ISSN 0007-1145
1475-2662
0954-4224
Keyword(s) fatty acid metabolism
broiler chickens
elongation
desaturation
oxidation
Summary The present study was conducted to evaluate the effect of different dietary lipid sources, age and sex on the SFA and MUFA metabolism in broiler chickens using a whole body fatty acid balance method. Four dietary lipid sources (palm fat, Palm; soyabean oil, Soya; linseed oil, Lin; and fish oil, Fish) were added at 3% to a basal diet containing 5% Palm. Diets were fed to female and male chickens from day 1 to either day 21 or day 42 of age. The accumulation (percentage of net intake and ex novo production) of SFA and MUFA was significantly lower in broilers fed on Palm than in broilers fed on the other diets (85·7 v. 97·4 %). Conversely, β-oxidation was significantly higher in Palm-fed birds than the average of the other dietary treatments (14·3 v. 2·6 %). On average, 33·1% of total SFA and MUFA accumulated in the body were elongated, and 13·8% were Δ-9 desaturated to longer chain or more unsaturated metabolites, with lower proportions being elongated and desaturated for the Palm and Fish diets than for the Soya and Lin diets. Total in vivo apparent elongase activity decreased exponentially in relation to the net intake of SFA and MUFA, while it increased with age. Total in vivo apparent Δ-9 desaturase activity was not significantly affected by dietary treatment or age. Total ex novo production and β-oxidation of SFA and MUFA showed a negative and positive curvilinear relationship with net intake of SFA and MUFA, respectively. Sex had no effect on SFA and MUFA 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:30029487

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Tue, 03 Aug 2010, 14:57:02 EST by Teresa Treffry