Conjugated linoleic acid in meat and meat products: A review

Schmid, Alexandra; Collomb, M.; Sieber, R.; Bee, Giuseppe

doi:10.1016/j.meatsci.2005.10.010

Cited by 282 publications

(221 citation statements)

References 97 publications

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“…However, this source should not be neglected, because ruminant meat and meat products are one of the main natural sources of c9,t11-CLA in human diets (Schmid et al, 2006). Moreover, the current data suggest that diets of ewes could be further improved to increase the t11-18:1 and c9,t11-CLA concentrations in milk and subsequently in the meat of suckling lambs.…”

Section: Milk Fatty Acid Compositionmentioning

confidence: 86%

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Nudda

Battacone

Bee

et al. 2015

Animal

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In this study, we investigated the effects of maternal gestation and/or lactation diets supplemented with extruded linseed (rich in 18:3n-3) on growth performance and long-chain polyunsaturated faaty acid (PUFA) accumulation in muscle tissues of suckling lambs. A total of 36 dairy ewes were fed a control diet (CON) and a diet containing linseed (LIN) during the last 8 weeks of gestation and/or the first 4 weeks of lactation. The four dietary treatments consisted of the following gestation/lactation feeding treatments: CON/CON, CON/LIN, LIN/LIN or LIN/CON. The lambs born from ewes fed the aforementioned diets were reared exclusively on milk and were slaughtered at 4 weeks of age. Profiles of ewes' milk fatty acids and that of intramuscular fat (IMF) of leg muscles from lambs were determined. Compared with the CON/CON, LIN/CON offspring tended to grow slower and to have reduced cold carcass weights. Moreover, the LIN supplementation only in the prepartum period (LIN/CON) resulted in greater PUFAn-3 accumulation in the IMF compared with the CON/CON offspring due to increased 20:5n-3 (1.20 v. 0.64 mg/100 mg of total FA), 22:5n-3 (1.91 v. 1.46;) and 22:6n-3 (1.25 v. 0.89) contents, respectively. Compared with the CON/CON diet, providing LIN only during lactation (CON/LIN) caused a greater PUFAn-3 content in the IMF mainly due to a greater 18:3n-3 (1.79 v. 0.75 mg/100 g total FA) concentration. Continuous PUFAn-3 exposure, both via the maternal gestation and lactation diet, had no additive effects on PUFAn-3 accumulation in tissues. The results suggest that linseed, as an 18:3n-3 source, seems to be more efficient in increasing long-chain PUFAn-3 in fetal than in suckling lamb tissues.

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Section: Milk Fatty Acid Compositionmentioning

confidence: 86%

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Nudda

Battacone

Bee

et al. 2015

Animal

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“…Conversely, during the hydrogenation of 18:3n-3 (which is more concentrated in LIN than in SOY) no cis-9, trans-11 CLA is formed, although it can be synthesised via trans-11 18:1 desaturation (Zhang et al, 2006). Schmid et al (2006) reported that using oil seeds instead of free oil may be preferred for enhancing the PUFA content of ruminant products. However, as described in this study and proposed by other authors, the addition of free oils instead of intact seeds seems to be more efficient for increasing the concentrations of healthy intermediaries in milk, such as cis-9, trans-11 CLA and trans-11 18:1 (Dhiman et al, 2000), as well as those FAs that are more plentiful in the different oils added to the ewe diets.…”

Section: Discussionmentioning

confidence: 99%

Feeding vegetable oils to lactating ewes modifies the fatty acid profile of suckling lambs

Manso

Bodas

Vieira

et al. 2011

Animal

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The objective of this study was to evaluate the effects of vegetable oil supplementation of ewe diets on the performance and fatty acid (FA) composition of their suckling lambs. Forty-eight pregnant Churra ewes (mean BW 64.3 6 0.92 kg) with their 72 newborn lambs (prolificacy 5 1.5) were assigned to one of four experimental diets, supplemented with 3% of hydrogenated palm (PALM), olive (OLI), soya (SOY) or linseed (LIN) oil. Lambs were nourished exclusively by suckling from their respective mothers. Ewes were milked once daily, and milk samples were taken once a week. When lambs reached 11 kg, they were slaughtered and samples were taken from musculus longissimus dorsi (intramuscular fat) and subcutaneous fat tissue. No changes were observed in milk yield, proximal composition or lamb performance (P . 0.10). Milk and lamb subcutaneous and intramuscular fat samples from the PALM diet had the highest saturated fatty acid concentration, whereas those of the OLI, SOY and LIN diets had the lowest (P , 0.05). The greatest monounsaturated fatty acid concentration was observed in milk from ewes fed OLI, and the least in milk and in lamb subcutaneous and intramuscular fat samples from LIN and PALM diets. Milk and lamb fat from ewes fed PALM displayed the highest 16:0 proportion and the lowest 18:0 (P , 0.05). There were higher concentrations of cis-9 18:1 in OLI samples (P , 0.05), more 18:2n-6 in SOY lambs and milk fat (P , 0.001) and the highest levels of 18:3n-3 and 20:5n-3 in LIN samples (P , 0.01). Milk and lamb subcutaneous and intramuscular samples from SOY and LIN diets contained the most cis-9, trans-11 conjugated linoleic acid, whereas PALM samples had the least (P , 0.01). Sheep diet supplementation with different oils, constituting up to 3% of their diets, resulted in changes in the FA composition of milk and the subcutaneous and intramuscular fat of suckling lambs, but did not affect either milk production or lamb performance.

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“…c9,t11 C18:2) have the same profitable effect on human health (Khanal & Dihman 2004). Among ruminant-origin meat, lamb meat can be characterised by comparatively high amounts of beneficial conjugated linoleic acids (Schmid et al 2006). Different factors influence lambs fatty acid profile.…”

Section: Introductionmentioning

confidence: 99%

The fatty acid composition of longissimus <i>lumborum</i> muscle of suckling and earlyweaned dual-purpose wool/meat lambs

et al. 2012

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Twenty-four dual purpose (wool/meat) suckling and early weaned ram lambs were used to study the fatty acid profile in intramuscular fat of longissimus lumborum muscle and lipid oxidation in blood serum. At 60 days of age 12 rams were slaughtered as suckling lambs. The other 12 early weaned and fed according to standards by grass hay and concentrate, and slaughtered at 90 days of age. Suckling lambs had more polyunsaturated fatty acids (P≤0.01) than early-weaned lambs. Younger lambs obtained also higher values of n-3 fatty acids (P≤0.01) and lower n-6/n-3 ratio (P≤0.01) appropriate in relation to their contribution to human health. Muscle tissue of early-weaned lambs compared to suckling group was characterised by significantly higher c9,t11C18:2 content (P≤0.01), which is desirable in human diet with regard to its peculiarities. The higher amount (P≤0.01) of vaccenic acid, which is the substrate for rumenic acid formation, has been observed in early-weaned lambs also.

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Conjugated linoleic acid in meat and meat products: A review

Cited by 282 publications

References 97 publications

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Feeding vegetable oils to lactating ewes modifies the fatty acid profile of suckling lambs

The fatty acid composition of longissimus <i>lumborum</i> muscle of suckling and earlyweaned dual-purpose wool/meat lambs

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Conjugated linoleic acid in meat and meat products: A review

Cited by 282 publications

References 97 publications

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Effect of linseed supplementation of the gestation and lactation diets of dairy ewes on the growth performance and the intramuscular fatty acid composition of their lambs

Feeding vegetable oils to lactating ewes modifies the fatty acid profile of suckling lambs

The fatty acid composition of longissimus &lt;i&gt;lumborum&lt;/i&gt; muscle of suckling and earlyweaned dual-purpose wool/meat lambs

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The fatty acid composition of longissimus <i>lumborum</i> muscle of suckling and earlyweaned dual-purpose wool/meat lambs