Nutritional composition of the meat of Hereford and Braford steers finished on pastures or in a feedlot in southern Brazil

Freitas, Aline Kellermann de; Lobato, José Fernando Piva; Cardoso, Leandro Lunardini; Tarouco, Jaime Urdapilleta; Vieira, Renata Monteiro; Dillenburg, Denise Ruttke; Castro, Ícaro Rainyer Rodrigues de

doi:10.1016/j.meatsci.2013.07.021

Cited by 45 publications

(32 citation statements)

References 53 publications

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“…De Freitas et al (2014) reported similar results to ours when evaluating the IMF profile in LM of 60 purebred Hereford, 1/4 Braford and 3/8 Braford steers finished either in a feedlot or on improved pastures in the state of Rio Grande do Sul. They reported that beef produced exclusively on improved pastures had higher concentration of components that are considered beneficial to human health, such as n-3 FAs, and a lower n-6 : n-3 ratio.…”

supporting

confidence: 82%

“…Many studies have reported that grazing animals (Poulson et al, 2004;Fincham et al, 2009;Blanco et al, 2010;Duckett et al, 2013;De Freitas et al, 2014) or fed higher levels of forage than concentrate (75 : 25; Phillip et al, 2007) have greater concentrations of intramuscular CLA, and increased n-3 : n-6 ratio (Poulson et al, 2004;Blanco et al, 2010;Duckett et al, 2013;Guerrero et al, 2013;De Freitas et al, 2014;Lorenzo et al, 2014) probably due to higher amounts of PUFA in the diet. The levels of CLA observed in this experiment were slightly higher than those observed by Realini et al (2004) for grazing and confined animals and lower than those observed by Duynisveld et al (2006).…”

mentioning

confidence: 99%

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Productive performance, meat quality and fatty acid profile of steers finished in confinement or supplemented at pasture

Patiño

Medeiros²,

Pereira

et al. 2015

Animal

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Thirty Aberdeen Angus crossbred steers (281 ± 16 kg) were used to test the effect of finishing feeding system on growth performance, meat quality and fatty acid (FA) profile in intramuscular fat. Steers were fed in confinement (forage:concentrate ratio of 50 : 50; DM basis) or with different levels of energy supplementation (0, 0.4, 0.8 and 1.2% BW) at pasture (Avena strigosa Schreb and Lolium multiflorum L.). There were no differences between treatments for ADG (average = 1.60 kg/day), hot carcass weight (HCW) (average = 229 kg) and subcutaneous fat depth (average = 3 mm). Dressing % (P = 0.06; tendency) and carcass ADG (P = 0.02) linearly increased with level of supplementation for pasture steers. No differences were observed between treatments for tenderness, marbling, pH, color b*, or cooking loss and drip loss in samples of Longissimus dorsi. However L* increased linearly (P = 0.05) with level of supplementation. The concentrations of myristic, palmitic, estearic and linoleic FA did not differ among treatments. The concentration of n-3 FA increased (P < 0.001) in steers at pasture compared with confinement, but n-6 FA concentrations did not differ between feeding system. Supplementation up to 0.4% BW increase (P < 0.001) conjugated linoleic acid (CLA) and linolenic FA concentrations in intramuscular fat when compared with confinement. The level of supplementation on pasture linearly decreased (P < 0.001) n-3 and CLA and linearly increased (P = 0.001) the n-6 : n-3 ratio. Finishing of steers grazing winter pasture with energy supplementation or in confinement fed a medium-concentrate diet did not affect meat quality (tenderness, marbling, parameter b* on the CIE L*a*b* scale, cooking and drip losses) except for a* and L*. However, intramuscular fat of animals finished at pasture with moderate level of supplementation compared to animals fed in confinement had greater concentration of CLA, linolenic, and n-3, and lower n-6 : n-3 in intramuscular fat.

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confidence: 82%

mentioning

confidence: 99%

Productive performance, meat quality and fatty acid profile of steers finished in confinement or supplemented at pasture

Patiño

Medeiros²,

Pereira

et al. 2015

Animal

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“…Except for the fat content, dietary treatments did not change meat chemical composition, and the chemical deposition in the meat was almost constant. Animals in different groups deposited a similar amount of protein because of similar levels of dietary protein (Carvalho et al., ; Freitas et al., ). However, feeding condensed tannin changed the fatty acid profile in the tissues, reflecting changes in the ruminal BH.…”

Section: Discussionmentioning

confidence: 99%

Physicochemical Quality, Fatty Acid Composition, and Sensory Analysis of Nellore Steers Meat Fed with Inclusion of Condensed Tannin in the Diet

Gesteira

Oliveira

Silva

et al. 2018

Journal of Food Science

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Agriculture byproducts plays an important part in the diet of ruminant animals and consequently on food chain and has implications for the composition and quality of the livestock products (milk, meat, and eggs) that people consume. Feeding tannin to steers increases the amount of unsaturated fatty acids and meat tenderness, with a concomitant reduction on saturated fatty acids and the atherogenicity index in meat. Thus, we recommend adding tannin to steer diets to reduce the risk factors for cardiovascular diseases in red meat for human consumption.

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“…Nutritional characteristics of beef can be influenced by production factors such as animal age, feeding regime, growth enhancers and carcass condition at slaughter. There is abundant evidence that type of diet (grass-vs. grain-fed) influences the proximate and fatty acid composition of beef (Daley et al, 2010;De Freitas et al, 2014). Beef from grass-fed animals is often reported as a healthier product than grain-fed beef owing to its lower fat content and more desirable fatty acid profile.…”

Section: Introductionmentioning

confidence: 99%

“…Beef from grass-fed animals is often reported as a healthier product than grain-fed beef owing to its lower fat content and more desirable fatty acid profile. Most results show that grass-fed beef has a higher content of CLA, n-3 PUFAs, polyunsaturated to saturated ratio (P/S), and lower n-6/n-3 ratios, as well as lower content of saturated fatty acids (SFAs) and n-6 PUFAs than grain-fed beef (De la Fuente et al, 2009;Daley et al, 2010;Noviandi et al, 2012;De Freitas et al, 2014). Higher content of SFA in meat has traditionally been associated with deleterious human health effects (Whetsell, 2003), although a recent epidemiological study indicated that the association of SFAs with adverse health effects may be debateable (Ruiz-Núñez et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The effect of beef production system on proximate composition and fatty acid profile of three beef muscles

Moholisa¹,

Strydom²,

Hugo³

2018

SA J. An. Sci.

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In this study the effects of animal age combined with feeding regime and the utilisation of a betaagonist (within a grain-fed system) on proximate composition and fatty acid profile of M. longissimus lumborum (LL), M. biceps femoris (BF), and M. semitendinosus (ST) were determined. Eighty Bonsmara steers consisting of A-age (0 permanent incisors) grain-fed (AC) and grain-fed supplemented with a betaagonist, zilpaterol (AZ) (n = 20) grass-fed AB-age (1 -2 permanent incisors; AB) (n = 20), and B-age (3 -6 permanent incisors; B) (n = 20) animals were used. These four groups are representative of cattle slaughtered in South Africa and were treated as four production systems. The chemical composition of all three muscles showed that zilpaterol increased protein and reduced muscle fat contents of meat. All the muscles of both grass-fed groups (AB and B) had significantly higher content of certain desirable fatty acids (FAs) such as conjugated linoleic acid (CLA), omega-3 (n-3) FAs, branched chain saturated phytanic acid, and a lower omega-6/omega-3 (n-6/n-3) ratio than the two grain-fed groups (AC and AZ). The FA composition of grain-fed beef muscle was generally not influenced by the use of zilpaterol except for a tendency towards higher n-6 polyunsaturated fatty acid (PUFA) in beta-agonist produced beef. This was mainly due to higher levels of linoleic acid in LL and ST muscles and higher CLA in BF muscle of AZ animals. Phytanic acid was also higher in BF muscle of the AZ group compared to AC. Differences in animal age among grass-fed animals (AB vs. B) had minimal effect on FA composition of grass-fed beef. We can conclude that differences in FA composition of the three muscles are influenced mainly by feeding regime and less by differences in production factors within feeding regimes. ______________________________________________________________________________________

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Nutritional composition of the meat of Hereford and Braford steers finished on pastures or in a feedlot in southern Brazil

Cited by 45 publications

References 53 publications

Productive performance, meat quality and fatty acid profile of steers finished in confinement or supplemented at pasture

Productive performance, meat quality and fatty acid profile of steers finished in confinement or supplemented at pasture

Physicochemical Quality, Fatty Acid Composition, and Sensory Analysis of Nellore Steers Meat Fed with Inclusion of Condensed Tannin in the Diet

The effect of beef production system on proximate composition and fatty acid profile of three beef muscles

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