Physicochemical characterization and lipid profile of meat from crossbred steers receiving different supplementation

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The aim of this study was to evaluate the carcass characteristics and the physicochemical parameters, centesimal composition, and fatty acid profile of the longissimus lumborum muscle of crossbred steers on a Brachiaria (Syn. Uruchloa) brizantha cv. Marandu pasture during the growing and finishing phases. Twenty-two uncastrated steers ½ Holstein/Zebu, with an average initial weight of 210 kg ± 8.2 kg and eight months of age, were distributed in a completely randomized design, in which the experimental period was fractionated in to three seasons associated with two nutritional plans (NP1 and NP2) and 11 animals by treatment: NP1– mineral mixture ad libitum in rainy seasons + nitrogen/energy supplement at 1–1 body weight (BW) in the dry season; and NP2 – nitrogen/energy supplement at 2–1 BW in rainy season 1 and in the dry season + nitrogen/energy supplement at 1–1 BW in rainy season 2, provided daily at 1000 h. Of the carcass measurements, differences were only observed (p>0.05) between the nutritional plans for loin-eye area corrected for 100 kg of hot carcass weight. Among the physicochemical parameters, only shear force was influenced (p>0.05) by the treatments, with higher values obtained in Nutritional Plan 1. The centesimal composition and fatty acid profile were not influenced (P<0.05) by supplementation. Nutritional plans used in the growing and finishing phases involving low levels of protein-energy supplementation do not lead to changes significant in carcass characteristics and meat. Nutritional Plan 1 is the most appropriate because it presents a lower cost.




Pimentel, L. R., da Silva, F. F., Silva, R. R., Rocha, W. J. B., de Souza, S. O., Costa, E. N., & Costa, E. G. L. (2019). Physicochemical characterization and lipid profile of meat from crossbred steers receiving different supplementation. Ciencia Rural, 49(11).

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