effect of dietary copper supplementation on fatty acid profile and oxidative stability of adipose depots in Boer x Spanish goats

A feeding trial was designed to examine the effects of copper sulfate pentahydrate (CuSO₄.5H₂O) on the fatty acid composition and oxidative stability in muscle and adipose tissues of Boer x Spanish goat kids. Fifteen (n = 5 per treatment) goats were fed 0, 100, or 200 mg of supplemental Cu per day a...

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Bibliographic Details
Published in:Journal of animal science 2008-02, Vol.86 (2), p.390-396
Main Authors: Cummins, K.A, Solaiman, S.G, Bergen, W.G
Format: Article
Language:English
Subjects:
adipose tissue
Adipose Tissue - metabolism
Animal Feed
animal feeding
Animal Nutritional Physiological Phenomena
Animals
Animals, Newborn - growth & development
Animals, Newborn - metabolism
Body Composition - drug effects
Boer
carcass composition
copper
Copper - administration & dosage
Copper - pharmacology
copper sulfate
copper sulfate pentahydrate
crossbreds
Crosses, Genetic
dietary mineral supplements
Dietary Supplements
Dose-Response Relationship, Drug
fatty acid composition
Fatty Acids - analysis
Fatty Acids - metabolism
Gas Chromatography-Mass Spectrometry - veterinary
goats
Goats - growth & development
Goats - metabolism
lipid composition
lipid metabolism
malondialdehyde
muscle tissues
Muscle, Skeletal - metabolism
Oxidation-Reduction
oxidative stability
Random Allocation
Spanish (goat breed)
subcutaneous fat
Thiobarbituric Acid Reactive Substances - analysis
tissue analysis
tissue distribution
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Summary:A feeding trial was designed to examine the effects of copper sulfate pentahydrate (CuSO₄.5H₂O) on the fatty acid composition and oxidative stability in muscle and adipose tissues of Boer x Spanish goat kids. Fifteen (n = 5 per treatment) goats were fed 0, 100, or 200 mg of supplemental Cu per day as copper sulfate for 98 d. The animals were slaughtered, and LM, s.c. adipose from the sternal region, and mesenteric adipose tissues were collected. Total lipids were extracted with chloroform:methanol (2:1), methylated and isolated via GLC from all tissues. The subsequent peaks were then positively identified by mass spectrometry. Thiobarbituric acid-reactive substances were measured also. In s.c. adipose, dietary Cu significantly decreased C14:0 (P = 0.03) and C16:0 (P = 0.01). In muscle, C15:0 (P = 0.03) was linearly increased by Cu. Dietary Cu supplementation did not influence oxidative stability in goat muscle or s.c. adipose. Copper supplementation at 200 mg/d resulted in a significant increase in malondialdehyde in mesenteric adipose (P = 0.01) compared with the 0 or 100 mg/d groups. These results indicate that lipid composition may differ from depot to depot and that depending on the depot, dietary Cu seems to elicit a variable response on the fatty acid composition.
ISSN:0021-8812
1525-3163
DOI:10.2527/jas.2006-671