| dc.description.abstract | Research has shown the M. Rhomboideus (Rho) from purebred Nellore (Bos indicus, BI) carcasses to be unique in its proximate chemical composition, indicated by increased lipid deposition. Thus, potential for the deposition of mono- (MUFA) and polyunsaturated (PUFA) fatty acids exists. The objective of this study was to assess the fatty acid composition of the lean portion and subcutaneous fat (SQF) of the Rho from BInfluenced cattle. Three replications of 4 USDA Choice (Ch) and 4 USDA Select (Se) Rho muscles were selected (n = 24). Total MUFA, PUFA, saturated fatty acid (SFA) percentages, and MUFA:SFA ratio of lean portion of the Rho muscle were not different (P > 0.05) between Ch Rho muscles (41.47, 7.17, 47.12%, 0.89, respectively) and Se Rho muscles (42.97, 6.34, 50.69%, 0.86, respectively). However, mean averages across both quality grades (QG) for total MUFA, PUFA, SFA, and MUFA:SFA (42.19, 6.76, 48.91%, 0.88, respectively) in the lean portion of the Rho were similar to reported fatty acid averages of Bos taurus (BT) longissimus dorsi lean portion (47.81, 4.35, 47.83%, 1.0, respectively).
The total MUFA percentage (49.35%) and MUFA:SFA ratio (1.07) in Ch SQF was significantly higher (P < 0.001) compared to Se SQF (45.40%, 0.92, respectively). Total PUFA (4.33 vs 3.69%) and SFA percentages (50.27 vs 46.95%) in Se SQF were higher (P < 0.02) compared to Ch SQF. Mean averages across both QG for total MUFA, PUFA, SFA, and MUFA:SFA (47.38, 4.01, 48.61%, 1.00, respectively) in Rho muscle SQF were similar to reported FAC averages of BT brisket SQF (56.58, 2.53, 35.87% 1.47, respectively). The Rho muscle poses potential, due to availability and fatty acid composition to be marketed as product that is beneficial to human health. | en |
