Effect of lipid supplementation on growth performance, carcass and meat quality and fatty acid composition of intramuscular lipids of lambs fed dehydrated lucerne or concentrate

Bessa, Rui J. B.; Portugal, P.V.; Mendes, I.A.; Santos‐Silva, José

doi:10.1016/j.livprodsci.2005.01.017

Cited by 113 publications

(141 citation statements)

References 32 publications

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“…It has been shown that 18:1 trans-10 is produced in an alternate biohydrogenation route when high-concentrate diets are used (Bessa et al 2005) and our data are fully consistent with this. The occurrence of elevated 18:1 trans-10 concentrations in meat is characteristic of intensive finishing systems for beef cattle and the putative negative health effects of 18:1 trans-10-enriched meats are currently under discussion (Aldai et al 2013).…”

Section: Discussionsupporting

confidence: 90%

“…Both 18:2 cis-9, trans-11 and 18:1 trans-11 have received attention in recent years because of their potential benefits for human health (Gebauer et al 2011), thus increasing their amount in ruminant meat is desirable. Ruminants fed with high forage/pasture in the diets generally have higher proportion of 18:2 cis-9, trans-11 in their lipids, and supplementing forage-based diets (but not concentrate-based diets) with unsaturated fat sources clearly increases the level of CLA in meat (Bessa et al 2005). However, finishing beef cattle on pasture can result in very low IMF content, which would limit the absolute amount of CLA (mg/100 g fresh meat).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Differences in intramuscular fatty acid profiles amongBos indicusand crossbredBos taurus × Bos indicusbulls finished on pasture or with concentrate feed in Brazil

Bressan

Rodrigues

Paula

et al. 2016

Italian Journal of Animal Science

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Bos indicus (n ¼ 67) and crossbred Bos taurus Â Bos indicus (n ¼ 67) bulls were finished in extensive or intensive conditions to evaluate the effect of genetic differences and finishing system on the fatty acid (FA) composition of intramuscular fat. Finishing system had a more pronounced effect on FA profiles than the genetic group, but the two factors often interacted for both individual and groups of FA. When compared with animals finished intensively, those finished on pasture produced meat with higher concentration of CLA and polyunsaturated n-3 FA, in particular of 18:3, 20:5 and 22:5. Meat from animals finished intensively had higher amounts of 14:0, 16:0, 18:1 trans-10, 18:1 trans-11, monounsaturated trans FA and 18:2. When the two genetic groups were compared under intensive finishing, B. indicus animals showed lower amounts of 20:4 (synthesised from 18:2) and 20:5 (synthesised from 18:3), suggesting that they may have a lower ability in biochemical pathways involved in the metabolism of n-6 and n-3 long chain fatty acids. Overall, meat from animals finished on pasture had a higher amount of the FA considered desirable for human health. ARTICLE HISTORY

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Differences in intramuscular fatty acid profiles amongBos indicusand crossbredBos taurus × Bos indicusbulls finished on pasture or with concentrate feed in Brazil

Bressan

Rodrigues

Paula

et al. 2016

Italian Journal of Animal Science

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“…Haddad & Younis (2004) não detectaram diferenças no ganho de peso e na conversão alimentar de cordeiros consumindo dietas com alta proporção de concentrado sem inclusão de gordura e com inclusão de 2,5 ou 5,0% de gordura protegida. Bessa et al (2005) suplementaram com óleo de soja a dieta de cordeiros e não detectaram diferenças no ganho de peso. Todavia, outros autores relataram redução no ganho de peso quando incluíram óleo na dieta desses animais (Santos-Silva et al, 2004;Yamamoto et al, 2005).…”

Section: Resultsunclassified

Grãos de girassol ou gordura protegida em dietas com alto concentrado e ganho compensatório de cordeiros em confinamento

et al. 2010

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RESUMO -Avaliaram-se os efeitos de três dietas e dois regimes alimentares sobre o desempenho e as características de carcaça de cordeiros em confinamento. Trinta e seis cordeiros com peso inicial de 18,7 ± 2,4 kg foram distribuídos em delineamento inteiramente casualizado em esquema fatorial 3 × 2 e receberam dietas sem inclusão de lipídio e com inclusão de grãos de girassol ou gordura protegida. Seis cordeiros de cada dieta foram submetidos a restrição alimentar e posterior ganho compensatório, enquanto a outra metade foi alimentada à vontade por todo o período de confinamento. Foram avaliados o consumo de matéria seca, o ganho de peso e a conversão alimentar, os níveis de ureia e colesterol sanguíneos, as características Sunflower grains or protected fat in high concentrate diets and compensatory gain for feedlot lambsABSTRACT -The effects of three diets and two feeding managements were assessed on feedlot lamb performance and carcass. Thirty six lambs with initial 18.7 ± 2.4 kg weight were distributed in a randomized complete block design in a 3 × 2 factorial arrangement and were fed a free-lipid diet, and a sunflower grains-added diet or a protected fat-added diet. Six lambs on each diet were submitted to feeding restriction management and later compensatory gain, while the other half was fed ad libitum throughout the feedlot period. Dry matter intake, weight gain and feed conversion ratio, urea and blood cholesterol, carcass characteristics and slaughter by-products were evaluated. During realimentation period the intake of lambs that underwent feeding restriction did not differ from the freely-fed animals. It was not affected by the diet but at the end of this period, the accumulated intake was 11.8% smaller for those lambs previously submitted to feeding restriction. Feed intake to slaughter weight was not influenced by the feeding management. In the restriction period, the blood cholesterol levels were 24% higher than those without restriction, but there was no difference during the realimentation period. The lipids in the diets increased the cholesterol blood levels in both the restriction and realimentation periods and reduced urea blood levels during the realimentation period. The performance, evaluated at slaughter weight, was damaged by the restriction management. There were no effects of feeding management or diet on the carcass parameters. Lipid sources increased the total fat proportion and decreased the gastrointestinal tract content. The feeding management with restriction damages weight gain and feed conversion ratio in lambs up to slaughter.

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“…The impact of supplementation with vegetable oils on sheep milk and meat FA composition has been extensively studied in recent years (Bessa et al, 2005;Bouattour et al, 2008;Gó mez-Cortes et al, 2008a, 2008bManso et al, 2009). Suckling lamb meat is a delicacy in Mediterranean countries, and as such, there is an elevated demand for this high-quality product by consumers.…”

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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Effect of lipid supplementation on growth performance, carcass and meat quality and fatty acid composition of intramuscular lipids of lambs fed dehydrated lucerne or concentrate

Cited by 113 publications

References 32 publications

Differences in intramuscular fatty acid profiles amongBos indicusand crossbredBos taurus × Bos indicusbulls finished on pasture or with concentrate feed in Brazil

Differences in intramuscular fatty acid profiles amongBos indicusand crossbredBos taurus × Bos indicusbulls finished on pasture or with concentrate feed in Brazil

Grãos de girassol ou gordura protegida em dietas com alto concentrado e ganho compensatório de cordeiros em confinamento

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

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