Table 5.
Effect of sire breed on the fatty acid composition (%) of the longissimus muscle from purebred and crossbred Jersey steers
| Item | Sire breed | |||||
|---|---|---|---|---|---|---|
| Jersey (n = 20) |
Angus (n = 9) |
SimAngus (n = 10) |
Wagyu (n = 15) |
SEM* | P value | |
| Total fatty acids, mg/g | 64.6 | 92.8 | 72.1 | 74.3 | 11.0 | 0.09 |
| Total lipid, % | 6.46 | 9.28 | 7.21 | 7.43 | 1.10 | 0.09 |
| 14:0, % | 3.45 | 3.50 | 3.63 | 3.87 | 0.220 | 0.09 |
| 14:1, % | 1.21 | 1.25 | 1.23 | 1.08 | 0.149 | 0.56 |
| 16:0, % | 25.91 | 27.30 | 27.45 | 26.84 | 0.541 | 0.06 |
| 16:1, % | 5.00 | 4.37 | 4.88 | 5.34 | 0.407 | 0.26 |
| 18:0, % | 11.32 | 11.35 | 10.99 | 10.72 | 0.366 | 0.37 |
| 18:1 trans, % | 2.85 | 3.32 | 3.45 | 3.66 | 0.588 | 0.15 |
| 18:1 cis 9, % | 39.92 | 39.95 | 38.21 | 38.31 | 1.188 | 0.17 |
| 18:1 cis others, % | 2.66 | 2.56 | 2.36 | 2.66 | 0.250 | 0.46 |
| 18:2, % | 3.79 | 3.28 | 3.55 | 3.51 | 0.155 | 0.06 |
| 18:3, % | 0.14 | 0.09 | 0.11 | 0.12 | 0.030 | 0.23 |
| SFA, % | 40.69 | 42.08 | 42.07 | 41.38 | 0.732 | 0.28 |
| MUFA, % | 51.64 | 51.49 | 50.13 | 51.07 | 0.825 | 0.45 |
| PUFA, % | 3.93a | 3.38b | 3.66ab | 3.63ab | 0.156 | 0.04 |
| MUFA:SFA | 1.279 | 1.226 | 1.194 | 1.240 | 0.042 | 0.37 |
| PUFA:SFA | 0.097a | 0.080b | 0.087ab | 0.088ab | 0.004 | 0.02 |
| Desaturase index (14)† | 25.63 | 25.77 | 24.92 | 21.62 | 1.787 | 0.09 |
| Desaturase index (16)† | 16.12 | 13.80 | 15.00 | 16.50 | 1.004 | 0.12 |
| Desaturase index (18)† | 77.85 | 77.92 | 77.62 | 78.14 | 0.796 | 0.95 |
a–cSire breed lsmean estimates within a row with a different superscript differ (P ≤ 0.05).
*The reported standard error of the mean is the greatest between the sire breeds.
†Index of delta desaturase enzyme activity on the conversion of 14:0 to 14:1, 16:0 to 16:1, and 18:0 to 18:1 cis 9 [e.g., = 100 × (18:1 cis 9 / (18:0 + 18:1 cis 9))].