Efficiency of extruded linseed for the finishing of grass-fed steers to counteract a decline of omega-3 fatty acids in the beef

Razminowicz, R.H.; Kreuzer, Michael; Leuenberger, Hans; Scheeder, M. R. L.

doi:10.1016/j.livsci.2007.04.019

Cited by 28 publications

(19 citation statements)

References 49 publications

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“…The live weight gain of genotypes did not change by linseed supplementation except for Holstein. Similar results were reported by Bartoň et al (2007b), Razminowicz et al (2008) Zahrádková et al (2010).…”

Section: P<005supporting

confidence: 91%

Comparison of fattening performance and slaughter value of local Hungarian cattle breeds to international breeds

et al. 2012

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The objective of the trial is to compare fattening performance, slaughter results and meat quality of bulls from international cattle breeds with local Hungarian breeds fattened under the same conditions. Altogether 62 growing bulls -Angus, Charolais, Holstein, Hungarian Grey, Hungarian Simmental, Charolais × Hungarian Grey -were fattened in small groups. The daily gain varied from 897 (Hungarian Grey) to 1 240 g/day (Angus). In general, the lower gain value is caused by the semi-intensive fattening system with low concentrate supplementation. The slaughter weight showed a similar tendency as final weight, there was a significant difference between Angus and Hungarian Grey. The killing out of Charolais (59.50 %), Angus (56.80 %) and Hungarian Simmental (57.84 %) was significantly higher than Hungarian Grey (55.13 %) and Holstein (55.03 %). Due to Charolais crossing the dressing percentage of Hungarian Grey was developed by about 1.5 %.The EU conformation scores of Charolais (9.50) and Hungarian Simmental (9.33) and the fatness scores of Angus (8.33) and Charolais × Hungarian Grey (7.33) were significantly higher than that of the other genotypes. The tissue composition of dissected carcass as well as ribs joint composition determined by X-ray computerised tomography method showed the lean meat of Hungarian Simmental and bone proportions of Holstein to be the highest, whilst Angus had the highest fat content. Charolais und Hungarian Simmental had significant higher longissimus muscle area in ribs joint compared to Angus, Holstein and Charolais × Hungarian Grey. Angus and Hungarian Grey had the highest intramuscular fat level of the three examined muscles.

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Section: P<005supporting

confidence: 91%

Comparison of fattening performance and slaughter value of local Hungarian cattle breeds to international breeds

et al. 2012

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“…A favourable effect of higher carcass fatness may therefore be explained by the insulating effect of the carcass fat cover and bigger-sized carcasses, both decelerating the chilling rate. Production factors influencing tenderness of grass-fed cattle by increasing fatness include gender (steers, as used here, generally deposit more body fat than bulls), supplementary feeding in the finishing period (varied in the present study and reported to affect carcass composition and meat quality in cattle and lambs 13,10,22 ) and breed. Meat quality characteristics of different cattle breeds have been investigated in various studies.…”

Section: Effects Of Production Factors On Beef Qualitymentioning

confidence: 93%

“…11,12 Reduced tenderness in relation to extensive feeding could therefore be at least partly the result of interactions with slaughter/chilling technology. Supplementation of grass with some concentrate may produce more tender meat, 13,14 although this was not always found, 15 and no difference between pasture beef and conventional beef obtained at the point of sale was found in a Swiss retail study. 16 Nevertheless, forage-only fattening, applied to make use of the ecological and economic merits of extensive (low-input) beef production on grasslands as well as for the potential health benefits associated with changes in the fatty acid composition of such beef, 16 bears the risk of increased toughness.…”

Section: Introductionmentioning

confidence: 88%

“…For this purpose, steers fattened in a controlled feeding experiment were employed. 13 By supplementation with concentrate during finishing of some of the animals, variation among carcasses in fat cover was obtained. The effects of the technologies applied were tested within animals, with one carcass side having been exposed to either electrical stimulation or delayed chilling and the other side acting as the conventionally treated control.…”

Section: Introductionmentioning

confidence: 99%

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Effect of electrical stimulation, delayed chilling and post‐mortem aging on the quality of M. longissimus dorsi and M. biceps femoris of grass‐fed steers

2008

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BACKGROUND: Roughage-based low-input beef production systems are gaining increasing interest owing to the perceived ecological advantages and potential health benefits associated with the favourable fatty acid composition of such beef. The low plane of nutrition may on the other hand yield less tender beef by affecting growth, carcass weight and fatness and therefore, indirectly, early post-mortem (p.m.) proteolytic enzyme activity and sarcomere shortening. This study aimed to examine delayed chilling and electrical stimulation as promising techniques to control early p.m. muscle metabolism in a way that improves the tenderness of beef from purely grass-fed steers in comparison with that from steers receiving a finishing diet with concentrates.

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“…It can be concluded that the incorporation of linseeds for finishing cattle has no effect or a slightly positive effect on performances. Although it has been shown that lipid supply in fattening diets generally increases carcass fat proportion (Clinquart et al, 1995), available data for linseed supply do not fully support this statement: linseeds may increase or not (Maddock et al, 2006;Normand et al, 2005;Razminowicz et al, 2008) carcass fatness. The reality of a difference between linseed and other lipid sources needs further research.…”

Section: Increasing the Use Of Linseed: Potential And Limitsmentioning

confidence: 99%

Linseed: a valuable feedstuff for ruminants

Doreau

Ferlay

2015

OCL

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-Linseeds are used in ruminant feeding for a long time, but this feedstuff knows now increasing interest. Linseeds are rich in alpha-linolenic acid, a fatty acid from the omega-3 series. Despite an extensive biohydrogenation of dietary alpha-linolenic acid in the rumen, its concentration in milk and beef meat increases with linseed incorporation in diets; this increase is accompanied by that of other fatty acids produced during biohydrogenation, especially conjugated linoleic acids and trans 18:1 fatty acids. The increase in cow fertility due to omega-3 fatty acids has not been demonstrated. Furthermore, linseed incorporation in ruminant diets is one of the most efficient ways to decrease enteric methane emissions. In addition to a global mitigating effect of all lipid sources on methane, linseeds have a specific effect due to changes in rumen microbial ecosystem. The practical use of linseeds in ruminant feeding at a large scale requires the absence of negative effect at any step of the ruminant production system. An excessive supply of lipids from linseeds can have deleterious effects on digestive efficiency, milk fat and protein content, beef susceptibility to oxidation, milk and beef fatty acid composition, but when linseed incorporation in the diet does not exceed ca. 3% of additional fat, only positive effects are remaining. A challenge is the increase in linseed cropping to meet increased needs for animal feeding.Keywords: Linseed / milk / beef / omega-3 fatty acids / methane Résumé -La graine de lin : un aliment de choix pour les ruminants. La graine de lin est utilisée depuis longtemps dans l'alimentation des ruminants, mais son emploi suscite un regain d'intérêt. Le lin est en effet riche en acide alpha-linolénique, un acide gras de la série des oméga 3. En dépit d'une biohydrogénation poussée dans le rumen, sa concentration dans le lait et la viande bovine est accrue lorsque la ration est enrichie en graines de lin ; cet accroissement va de pair avec celui d'autres acides gras intermédiaires de la biohydrogénation comme les acides gras monoinsaturés trans et les acides linoléiques conjugués. L'amélioration de la fertilité des vaches liée à cet apport d'oméga 3 n'a pas été démontrée. Par ailleurs, l'incorporation de lin dans la ration des ruminants est un des moyens efficaces pour réduire l'émission de méthane entérique. Outre un effet de toutes les sources de lipides pour réduire le méthane, le lin a un effet spécifique lié à son action sur le microbiote ruminal. L'utilisation de la graine de lin à grande échelle dans l'alimentation des bovins nécessite qu'il n'ait pas d'effet négatif à quelque niveau du système de production. Un apport excessif de lipides du lin peut diminuer la digestibilité de la ration, les taux butyreux et protéique du lait, modifier sensiblement la composition en acides gras du lait et de la viande, et augmenter la susceptibilité à l'oxydation des produits. Toutefois, lorsque l'incorporation de lipides du lin ne dépasse pas 3 % environ de la ration, seuls les effets pos...

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Efficiency of extruded linseed for the finishing of grass-fed steers to counteract a decline of omega-3 fatty acids in the beef

Cited by 28 publications

References 49 publications

Comparison of fattening performance and slaughter value of local Hungarian cattle breeds to international breeds

Comparison of fattening performance and slaughter value of local Hungarian cattle breeds to international breeds

Effect of electrical stimulation, delayed chilling and post‐mortem aging on the quality of M. longissimus dorsi and M. biceps femoris of grass‐fed steers

Linseed: a valuable feedstuff for ruminants

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