Table 3. Weight percentage of fatty acids of flat iron (INF) and petite tender (TM) from beef steers1)

Fat% and fatty acid Muscle SEM Fat% and fatty acid Muscle SEM
INF TM INF TM
Fat% 8.31a 5.56b 0.5921 C18:3 ω3 0.34 0.37 0.0164
C8:0 0.02 0.03 0.0090 C20:0 0.09 0.10 0.0115
C10:0 0.08 0.10 0.0167 CLA 18:2c9t11 0.33 0.32 0.0312
C12:0 0.10 0.12 0.0214 C20:3 ω6 0.20b 0.29a 0.0274
C14:0 3.01 2.92 0.0903 C20:4 ω6 0.51b 0.75a 0.0605
C14:1t ω5 0.08b 0.13a 0.0226 C22:4 ω6 0.03 0.05 0.0304
C14:1 ω5 0.66 0.65 0.0611 C20:5 ω3 0.12 0.16 0.0394
C15:0 0.56 0.57 0.0298 C22:5 ω3 0.13 0.14 0.0193
C16:0 24.53 24.33 0.2246 C22:6 ω3 0.02 0.02 0.0052
C16:1 ω7 2.80 2.59 0.1176 Total trans 4.23 4.71 0.2580
C17:0 1.47 1.43 0.0419 PUFA 5.71b 6.73a 0.3422
C17:1 ω5 1.01 0.95 0.0370 SFA 43.64 43.42 0.4637
C18:0 13.74 13.80 0.3934 ω6 4.77b 5.71a 0.3160
C18:1t2) 3.68 4.09 0.2538 ω3 0.61 0.70 0.0516
C18:1 ω9 36.38a 34.28b 0.7978 ω6:ω3 8.16 8.91 0.4855
C18:1d11 ω7 1.58b 1.74a 0.0618 Total 95.55a 94.59b 0.3233
C18:2 ω6 3.90b 4.45a 0.2652 Others 4.45b 5.41a 0.3233
C18:2t ω6 0.13 0.17 0.0267
Weight percentage values are relative percentage of all peaks observed by gas chromatography.
Includes transvaccenic ω7, elaidic ω9, and ricinelaidic ω9 isomers.
Means having different superscripts within row are significantly different.
TM, teres major.