Impacts of fat from ruminants' meat on cardiovascular health and possible strategies to alter its lipid composition

Vargas‐Bello‐Pérez, Einar; Larraín, Rafael

doi:10.1002/jsfa.8168

Cited by 24 publications

(16 citation statements)

References 83 publications

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“…In contrast with the other saturated fatty acids, stearic acid — a saturated fatty acid with 18 carbon atoms — is considered to not have a negative effect towards humans 25 . Research indicated that stearic acid had no effects on serum total cholesterol concentrations and increased intake of stearic acid reduces the risk of cardiovascular disease similar to intake of oleic acid (C18:1) 26 .…”

Section: Discussionmentioning

confidence: 99%

Diet selection and n-3 polyunsaturated fatty acid deposition in lambs as affected by restricted time at pasture

Zhang

Jin

Badgery

et al. 2017

Sci Rep

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This study investigates the effects of restricted grazing time on forage selectivity and meat fatty acid deposition of lambs compared to a traditional grazing system. Results showed that the animals preferred to graze pasture species that were more palatable and lower in fibre, while demonstrating a partial preference for species with high protein levels. Leymus chinensis was more preferentially selected by lambs grazing pasture for shorter periods than longer periods. Lambs that grazed for 4 h per day had a high LNA (α-linolenic acid) intake. The accumulation of LNA and its elongation products in tissue was closely related to the LNA level in diet. Therefore, allowing lambs to graze for at least 4 h per day resulted in a meat fatty acid profile that is richer in health-promoting fatty acids. In particular, the highest DHA (docosahexaenoic acid) was observed in meat from lambs which grazed pasture for 4-h versus 8- and 12-h. It can be concluded that, in grassland systems, a healthier meat fatty acid profile for humans and the potential for better pasture management is achieved by limiting the grazing of lambs to 4 h per day rather than grazing over longer time periods.

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Section: Discussionmentioning

confidence: 99%

Diet selection and n-3 polyunsaturated fatty acid deposition in lambs as affected by restricted time at pasture

Zhang

Jin

Badgery

et al. 2017

Sci Rep

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“…Humans can obtain n-3 LC-PUFA or their C 18 PUFA precursors from various sources including aquatic (fish, crustaceans, and mollusks), farm livestock products (meat, egg, and milk), oilseeds, fruits, herbs, cyanobacteria and microorganisms (bacteria, fungi, microalgae, and diatoms) 6 . Ruminant meat research has drawn considerable attention because ruminant meat contains some bioactive lipids (including n-3 LC-PUFA) and the fatty acid profiles of ruminant meat can be enhanced through dietary supplementation 7,8 . In this regard, the manipulation of fatty acid profiles in sheep meat via dietary n-3 LC-PUFA supplementation has yielded some promising results.…”

Section: Introductionmentioning

confidence: 99%

Fatty acid profiles of muscle, liver, heart and kidney of Australian prime lambs fed different polyunsaturated fatty acids enriched pellets in a feedlot system

Nguyen

Nguyễn

et al. 2019

Sci Rep

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We investigated the effect of various dietary polyunsaturated fatty acid (PUFA) sources on the fatty acid profiles of muscle, liver, heart and kidney of Australian prime lambs. Seventy-two White Suffolk x Corriedale first-cross lambs weaned at 6 months of age were randomly allocated to the following six treatments: (1) Control: Lucerne hay only; wheat-based pellets infused with 50 ml/kg dry matter (DM) of oil from (2) rice bran (RBO); (3) canola (CO); (4) rumen-protected (RPO), (5) flaxseed (FSO) and (6) safflower (SO) sources in a completely randomized experimental design. Lambs in CO, FSO, SO and RPO treatments achieved contents of eicosapentaenoic acid (EPA, 22:5n-3) plus docosahexaenoic acid (DHA, 22:6n-3) in the longissimus dorsi muscle ranging from 31.1 to 57.1 mg/135 g, over and above the 30 mg per standard serve (135 g) threshold for “source” claim under the Australian guidelines. There was no difference in n-3 LC-PUFA contents in longissimus dorsi muscle of lambs fed dietary oils of plant origin. The highest 18:3n-3 (ALA) contents achieved with FSO diet in the muscle, liver and heart were 45.6, 128.1 and 51.3 mg/100 g, respectively. Liver and kidney contained high contents of n-3 LC-PUFA (ranging from 306.7 to 598.2 mg/100 g and 134.0 to 300.4 mg/100 g, respectively), with all values readily exceeding the ‘good source’ status (60 mg per serve under Australian guidelines). The liver and kidney of PUFA fed lambs can be labelled as ‘good source’ of n-3 LC-PUFA based on EPA and DHA contents stipulated by the Food Standards of Australia and New Zealand guidelines. Therefore, if lamb consumers consider eating the liver and kidney as their dietary protein sources, they can adequately obtain the associated health benefits of n-3 LC-PUFA.

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“…concentrates rich in linoleic acid or feeding pasture-based diets (Vargas-Bello-Pérez and Larraín, 2017). These strategies are based on increasing ruminal synthesis of vaccenic acid, thereby increasing uptake of the respective fatty acid in duodenum resulting in greater endogenous synthesis of rumenic acid in the mammary gland (Vasta et al, 2009b).…”

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confidence: 99%

Influence of dietary supplementation with sunflower oil and quebracho tannins on growth performance and meat fatty acid profile of Awassi lambs

Kamel

Al-Dobaib

Salem

et al. 2018

Animal Feed Science and Technology

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A B S T R A C TThe influence of dietary supplementation with quebracho tannins (QT) or/and sunflower oil (SF) on growth performance and fatty acid profile in meat of Awassi lambs was studied. Seventy-two lambs were assigned randomly to nine diets (8 per group) in the experiment following a 3 2 factorial design with all possible combinations of two factors, SF and QT each at three levels i.e. 0 (control), 20 or 40 g/kg diet DM. A significant SF × QT interaction was observed on the conjugated linoleic acid content of intramuscular fat (P = 0.007), but not on average daily weight gain (P = 0.11). Addition of QT at 40 g/ kg DM significantly increased average daily gain comparing to control diet. The inclusion of QT in the diet increased the content of the conjugated linoleic acid in the lamb meat above that achieved with SF supplementation only. Addition of the combination of QT and SF to the diet enhanced the content of conjugated linoleic acid (C18:2 c9t11) of the lamb meat. This could be due to the reduction in the bio-hydrogenation of unsaturated fatty acids in the diet. The results suggest that inclusion the combination of QT and SF in lamb diets improved the healthy fatty acids content in the meat without an adverse effect on animal performance.

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Impacts of fat from ruminants' meat on cardiovascular health and possible strategies to alter its lipid composition

Cited by 24 publications

References 83 publications

Diet selection and n-3 polyunsaturated fatty acid deposition in lambs as affected by restricted time at pasture

Diet selection and n-3 polyunsaturated fatty acid deposition in lambs as affected by restricted time at pasture

Fatty acid profiles of muscle, liver, heart and kidney of Australian prime lambs fed different polyunsaturated fatty acids enriched pellets in a feedlot system

Influence of dietary supplementation with sunflower oil and quebracho tannins on growth performance and meat fatty acid profile of Awassi lambs

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