Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures
The enhancement of health-beneficial omega-3 long⁻chain (≥C20) polyunsaturated fatty acid (<i>n</i>-3 LC-PUFA) contents in the muscle, liver, heart, and kidney of Australian prime lambs through pasture grazing and supplementation with oil infused pellets was investiga...
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doaj-be7aa263fee04a0fb40af2c7454c50c12020-11-24T21:23:00ZengMDPI AGNutrients2072-66432018-12-011012198510.3390/nu10121985nu10121985Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot PasturesHung V. Le0Quang V. Nguyen1Don V. Nguyen2John R. Otto3Bunmi S. Malau-Aduli4Peter D. Nichols5Aduli E. O. Malau-Aduli6Animal 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, AustraliaAnimal 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, AustraliaAnimal 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, AustraliaAnimal 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, AustraliaAsia Pacific Nutrigenomics and Nutrigenetics Organisation (APNNO), CSIRO Food & Nutrition, Adelaide, SA 5000, AustraliaAnimal 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, AustraliaAnimal 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, AustraliaThe enhancement of health-beneficial omega-3 long⁻chain (≥C20) polyunsaturated fatty acid (<i>n</i>-3 LC-PUFA) contents in the muscle, liver, heart, and kidney of Australian prime lambs through pasture grazing and supplementation with oil infused pellets was investigated. Forty-eight first-cross prime lambs were randomly assigned into a split-plot design with pasture type as the main plot effect and pellet supplementation as a sub-plot effect in a feeding trial that lasted for nine weeks. The <i>n</i>-3 LC-PUFA content in <i>Longissimus dorsi</i> muscle of all lambs was well above the 30 mg threshold for “omega-3 source„ nutrition claim under the Australian Food Standards and Guidelines. Pasture type impacted the fatty acid contents in muscle, heart, and kidney of prime lambs. Lambs grazing cocksfoot grass only had high 18:3n-3 (ALA) and <i>n</i>-3 LC-PUFA contents (67.1 mg/100 g and 55.2 mg/100 g, respectively) in the <i>Longissimus dorsi</i> muscle, which was not significantly different (<i>p</i> > 0.8990) from the contents of lambs grazing only lucerne. Supplementation of pellets with or without oil infusion to grazing lambs generally decreased the ALA and <i>n</i>-3 LC-PUFA contents and increased the <i>n</i>-6/<i>n</i>-3 ratio in the <i>Longissimus dorsi</i> muscle. The fatty acid content in the internal organs of grazing lambs was also affected by pellet supplementation. The liver and kidney of grazing lambs were both “good sources„ (60 mg/100 g) of omega-3. The cocksfoot grass showed considerable potential for producing healthy, premium quality meat with high contents of <i>n</i>-3 and <i>n</i>-3 LC-PUFA, which may consequently enhance the omega-3 intake of Australian lamb consumers.https://www.mdpi.com/2072-6643/10/12/1985lamb<i>n</i>-3 LC-PUFAmuscleliverheartkidneyrice brancanolacocksfootlucerne |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hung V. Le Quang V. Nguyen Don V. Nguyen John R. Otto Bunmi S. Malau-Aduli Peter D. Nichols Aduli E. O. Malau-Aduli |
spellingShingle |
Hung V. Le Quang V. Nguyen Don V. Nguyen John R. Otto Bunmi S. Malau-Aduli Peter D. Nichols Aduli E. O. Malau-Aduli Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures Nutrients lamb <i>n</i>-3 LC-PUFA muscle liver heart kidney rice bran canola cocksfoot lucerne |
author_facet |
Hung V. Le Quang V. Nguyen Don V. Nguyen John R. Otto Bunmi S. Malau-Aduli Peter D. Nichols Aduli E. O. Malau-Aduli |
author_sort |
Hung V. Le |
title |
Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures |
title_short |
Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures |
title_full |
Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures |
title_fullStr |
Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures |
title_full_unstemmed |
Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures |
title_sort |
enhanced omega-3 polyunsaturated fatty acid contents in muscle and edible organs of australian prime lambs grazing lucerne and cocksfoot pastures |
publisher |
MDPI AG |
series |
Nutrients |
issn |
2072-6643 |
publishDate |
2018-12-01 |
description |
The enhancement of health-beneficial omega-3 long⁻chain (≥C20) polyunsaturated fatty acid (<i>n</i>-3 LC-PUFA) contents in the muscle, liver, heart, and kidney of Australian prime lambs through pasture grazing and supplementation with oil infused pellets was investigated. Forty-eight first-cross prime lambs were randomly assigned into a split-plot design with pasture type as the main plot effect and pellet supplementation as a sub-plot effect in a feeding trial that lasted for nine weeks. The <i>n</i>-3 LC-PUFA content in <i>Longissimus dorsi</i> muscle of all lambs was well above the 30 mg threshold for “omega-3 source„ nutrition claim under the Australian Food Standards and Guidelines. Pasture type impacted the fatty acid contents in muscle, heart, and kidney of prime lambs. Lambs grazing cocksfoot grass only had high 18:3n-3 (ALA) and <i>n</i>-3 LC-PUFA contents (67.1 mg/100 g and 55.2 mg/100 g, respectively) in the <i>Longissimus dorsi</i> muscle, which was not significantly different (<i>p</i> > 0.8990) from the contents of lambs grazing only lucerne. Supplementation of pellets with or without oil infusion to grazing lambs generally decreased the ALA and <i>n</i>-3 LC-PUFA contents and increased the <i>n</i>-6/<i>n</i>-3 ratio in the <i>Longissimus dorsi</i> muscle. The fatty acid content in the internal organs of grazing lambs was also affected by pellet supplementation. The liver and kidney of grazing lambs were both “good sources„ (60 mg/100 g) of omega-3. The cocksfoot grass showed considerable potential for producing healthy, premium quality meat with high contents of <i>n</i>-3 and <i>n</i>-3 LC-PUFA, which may consequently enhance the omega-3 intake of Australian lamb consumers. |
topic |
lamb <i>n</i>-3 LC-PUFA muscle liver heart kidney rice bran canola cocksfoot lucerne |
url |
https://www.mdpi.com/2072-6643/10/12/1985 |
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