Influence of feeding soybean oil on conjugated linoleic acid content of beef
J. Agric. Food Chem
Forty-eight steers were used to study the influence of feeding soybean oil (SO) on the conjugated linoleic acid (CLA) content of beef. Steers were fed either a control diet containing 954 g/kg of dry matter (DM) corn-based concentrate (CTL) or a control diet supplemented with SO at 20 (SO2) or 40 g/kg (SO4) of diet DM for 105 days. Adipose tissue samples were collected from the M. longissimus dorsi (LD) and from the M. semitendinosus (ST) on days 0 and 63 of the experiment. Adipose and muscle tissue samples were collected from the LD and ST immediately after slaughter. Feeding 40 g/kg of DM as SO increased the proportions of trans-C18:1 in beef lipid as compared to CTL and SO2 treatments. The C18:2cis-9, trans-11 isomer of CLA as a proportion of total fat was not different in adipose and muscle across treatments. Supplementing SO increased C18:2trans-10, cis-12 CLA in adipose tissue of the LD. Supplementing high-grain finishing diets with SO is not an effective strategy to enhance the C18:2cis-9, trans-11 isomer of CLA in beef.
Dhiman, T. R., M. S. Zaman, K. C. Olson, H. R. Bingham, A. L. Ure, and M. W. Pariza. 2005. Influence of feeding soybean oil on conjugated linoleic acid content of beef J. Agric. Food Chem 53: 684-689.