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Nutrients 2017, 9(8), 893; doi:10.3390/nu9080893

Omega–3 Long-Chain Fatty Acids in the Heart, Kidney, Liver and Plasma Metabolite Profiles of Australian Prime Lambs Supplemented with Pelleted Canola and Flaxseed Oils

1
Animal Genetics and Nutrition, Veterinary Sciences Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
2
National Institute of Animal Science, Thuy Phuong, Bac Tu Liem, Hanoi 129909, Vietnam
3
College of Economics and Techniques, Thai Nguyen University, Thai Nguyen 252166, Vietnam
4
College of Medicine and Dentistry, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia
5
CSIRO Oceans & Atmosphere, P.O. Box 1538, Hobart, TAS 7001, Australia
*
Author to whom correspondence should be addressed.
Received: 5 June 2017 / Revised: 30 July 2017 / Accepted: 14 August 2017 / Published: 17 August 2017
(This article belongs to the Special Issue Meat Consumption and Human Health)
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Abstract

The objective of the study was to ascertain whether human health beneficial omega–3 long-chain (≥C20) polyunsaturated fatty acid (n-3 LC-PUFA) content in heart, kidney and liver can be enhanced by supplementing prime lambs with graded levels of canola and flaxseed oil. Health status of the lambs, as a consequence of the supplementation, was also investigated by examining their plasma metabolites. Sixty purebred and first-cross lambs were allocated to one of five treatments of lucerne hay basal diet supplemented with isocaloric and isonitrogenous wheat-based pellets without oil inclusion (Control) or graded levels of canola oil at 2.5% (2.5C), 5% (5C), flaxseed oil at 2.5% (2.5F) and 5% (5F) in a completely randomised design. Pre-slaughter blood, post-slaughter kidney, liver and heart samples were analysed for plasma metabolite and fatty acid profiles. Summations of docosapentaenoic acid and docosahexaenoic acid, and total n-3 LC-PUFA were enhanced in the liver and kidney of 5F supplemented lambs with a marked decrease in n-6/n-3 ratio and significant breed differences detected. There were generally no deleterious impacts on animal health status. A combination of 5% oil supplementation and lamb genetics is an effective and strategic management tool for enhancing n-3 LC-PUFA contents of heart, kidney and liver without compromising lamb health. View Full-Text
Keywords: Key words: prime lamb; oil supplementation; visceral organs; n-3 LC-PUFA; plasma metabolites Key words: prime lamb; oil supplementation; visceral organs; n-3 LC-PUFA; plasma metabolites
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Nguyen, D.V.; Le, V.H.; Nguyen, Q.V.; Malau-Aduli, B.S.; Nichols, P.D.; Malau-Aduli, A.E.O. Omega–3 Long-Chain Fatty Acids in the Heart, Kidney, Liver and Plasma Metabolite Profiles of Australian Prime Lambs Supplemented with Pelleted Canola and Flaxseed Oils. Nutrients 2017, 9, 893.

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