Perfil lipídico da gordura intramuscular de cortes e marcas comerciais de carne bovina

The objective of this study was to evaluate the effect of whole raw soybean (WRS) in the finishing diet of Nellore cattle on productive performance, carcass traits, meat quality, fatty acid profile of meat, and blood parameters. In a completely randomized design, 52 Nellore bulls (mean body weight ± SD: 380 ± 34 kg) were allotted for 84 days. The animals received the following diets with a forage: concentrate ratio of 40/60: (i) WRS0: control diet without soybean grains; (ii) WRS8: diet containing 8% WRS in dry matter basis; (iii) WRS16: diet containing 16% WRS, and (iv) WRS24: diet containing 24% WRS. At intervals of 28 days, the animals were weighed, muscle and adipose tissue was analysed by ultrasound, and blood samples were collected. The animals were slaughtered on day 85 and liver weight and hot carcass weight were measured during slaughter. The pH and carcass dressing were calculated at 24 h after slaughter. Longissimus dorsi muscle samples were collected for the determination of fatty acid profile of meat, ether extract, tenderness and sensory analysis of meat aged for 14 days. Blood cholesterol content increased linearly with increasing proportion of whole raw soybean grains. The diet did not affect performance or carcass attributes. The WRS8 had the highest shear force values. In fatty acid profile, C14:0 decreased (p = 0.05), whereas 16:1, 20:0 and 20:1 fatty acids increased linearly with increasing proportion of WRS (p < 0.05). However, concentration of conjugated linoleic acid cis 9, trans 11 and 17:0 increased with WRS24 and WRS16. In the sensory analysis, WRS24 was more tender with respect to the other treatments (p < 0.05). Finally, the inclusion of WRS in the finishing diet of feedlot Nellore bulls only evidenced little changes in fatty acid profile and tenderness, in animals fed diets containing 16 or 24% soybean.

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“…According to Pinho et al. (), the myristic acid content of bovine longissimus dorsi muscle is approximately 2.5 g/100 g.…”

Section: Resultsmentioning

confidence: 99%

High levels of whole raw soybean in diets for Nellore bulls in feedlot: effect on growth performance, carcass traits and meat quality

Cônsolo

Gardinal

Gandra

et al. 2014

Animal Physiology Nutrition

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“…The observed values of IMF ranged from 0.8% to 7.8%, with an average of 3.1%, and there was wide variation around the mean (coefficient of variation > 50%; Table 1), which reflected the reality of beef cuts usually sold in Brazil (PINHO et al, 2011).…”

Section: Resultsmentioning

confidence: 97%

Predictive efficiency of distinct color image segmentation methods for measuring intramuscular fat in beef

et al. 2015

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“…A result similar to that of the present study was obtained by Aldai et al (2010), in which diets based on distillery dry grains (DDGs) of wheat had a higher content of α-linolenic acid than diets based on corn DDGs, which led to a decrease in the omega-6/ omega-3 ratio. The adequate ratio between omega-6 and omega-3 fatty acids should preferably be less than 4:1 (Pinho et al, 2011). Therefore, only the rice grain diet was close to the desired reference value.…”

Section: Resultsmentioning

confidence: 99%

Nutritional management and sexual condition in cattle determine differentiation in the fatty acid profile of meat

Cattelam¹,

Argenta²,

Filho³

et al. 2021

Semina: Ciênc. Agrár.

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This study aimed at evaluating the fatty acid profile of meat from feedlot finished heifers and steers fed with high-grain diets. It was used 45 Charolais and Nellore crossbred cattle, 21 of them were heifers with an initial age of 32 ± 2 months and 359.9 ± 6.7 kg of body weight, and 24 were steers with an initial age of 20 ± 2 months and 337.6 ± 6.2 kg of body weight. The animals were distributed in the treatments according to the energy source used in the diet, being them: rice, white oats or corn, using seven heifers and eight steers for each diet. The experimental design was completely randomized, with factorial arrangement 3 x 2 (three treatments and two sexual conditions). The diet based on corn provided higher levels of pentadecylic and margaric fatty acids. Excepting elaidic fatty acid, beef from steers and heifers was similar for the different saturated and monounsaturated fatty acids evaluated. A rice-based diet is advantageous when meat production is recommended with greater participation of fatty acids from the omega-3 group. When finished in feedlot with high-grain diets, the heifers produce meat with higher conjugated linoleic acid (CLA) content and a better ratio between omega-6/omega-3 fatty acids compared to steers. These findings indicate that it is possible to modify undesirable characteristics in meat through the nutritional management of animals, searching for a product that meets the requirements of a modern population, which is redefining its principles regarding food.

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Perfil lipídico da gordura intramuscular de cortes e marcas comerciais de carne bovina

Cited by 6 publications

References 18 publications

High levels of whole raw soybean in diets for Nellore bulls in feedlot: effect on growth performance, carcass traits and meat quality

High levels of whole raw soybean in diets for Nellore bulls in feedlot: effect on growth performance, carcass traits and meat quality

Predictive efficiency of distinct color image segmentation methods for measuring intramuscular fat in beef

Nutritional management and sexual condition in cattle determine differentiation in the fatty acid profile of meat

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