Table 6.
Effect of different energy level diets on the fatty acid composition in the longissimus lumborum of Tibetan sheep (mg/100 g tissue).
| Items | Groups | SEM | P-value | ||
|---|---|---|---|---|---|
| HS | MS | LS | |||
| ∑SFA | 301.02 | 306.82 | 483.16 | 107.09 | 0.13 |
| 6:0 | 0.00 | 0.00 | 0.01 | 0.00 | 0.65 |
| 10:0 | 0.10 | 0.11 | 0.23 | 0.07 | 0.09 |
| 11:0 | 0.00 | 0.00 | 0.01 | 0.00 | 0.05 |
| 12:0 | 0.39 | 0.43 | 0.79 | 0.22 | 0.10 |
| 13:0 | 0.02 | 0.03 | 0.06 | 0.02 | 0.10 |
| 14:0 | 13.01 | 11.92 | 24.47 | 7.67 | 0.18 |
| 15:0 | 1.22 | 1.30 | 2.68 | 0.74 | 0.09 |
| 16:0 | 156.01 | 162.51 | 243.58 | 54.25 | 0.14 |
| 17:0 | 4.90 | 5.16 | 9.49 | 2.28 | 0.09 |
| 18:0 | 123.74 | 123.74 | 199.51 | 41.95 | 0.12 |
| 20:0 | 0.87 | 0.83 | 1.48 | 0.35 | 0.13 |
| 21:0 | 0.36 | 0.38 | 0.35 | 0.03 | 0.70 |
| 22:0 | 0.15 | 0.14 | 0.22 | 0.05 | 0.20 |
| 23:0 | 0.09 | 0.09 | 0.10 | 0.01 | 0.44 |
| 24:0 | 0.16 | 0.18 | 0.20 | 0.02 | 0.10 |
| ∑MUFA | 283.92 | 288.99 | 400.68 | 84.11 | 0.19 |
| c9-14:1 | 0.44 | 0.37 | 0.64 | 0.22 | 0.39 |
| c10-15:1 | 0.35 | 0.34 | 0.63 | 0.16 | 0.12 |
| c9-16:1 | 13.00 | 12.17 | 19.69 | 5.67 | 0.27 |
| c10-17:1 | 4.02 | 4.25 | 6.80 | 1.29 | 0.07 |
| c9-18:1 | 263.03 | 269.05 | 368.89 | 76.21 | 0.19 |
| c11-20:1 | 2.25 | 2.06 | 2.86 | 0.51 | 0.28 |
| c13-22:1 | 0.83 | 0.75 | 1.17 | 0.32 | 0.32 |
| ∑PUFA | 85.84 | 79.72 | 86.36 | 6.56 | 0.94 |
| ∑n-3 | 27.46 | 27.09 | 27.37 | 0.97 | 0.92 |
| 18:3n-3 | 2.65 | 2.42 | 3.40 | 0.48 | 0.19 |
| 20:3n-3 | 18.78a | 18.88a | 16.89b | 0.59 | 0.03 |
| 20:5n-3 | 1.44ab | 1.29b | 1.89a | 0.19 | 0.11 |
| 22:5n-3 | 3.91 | 3.95 | 4.47 | 0.34 | 0.13 |
| 22:6n-3 | 0.68 | 0.55 | 0.72 | 0.10 | 0.71 |
| ∑n-6 | 58.37 | 52.63 | 58.99 | 5.62 | 0.92 |
| 18:2n-6 | 52.01 | 46.67 | 53.89 | 5.42 | 0.75 |
| 18:3n-6 | 0.62 | 0.50 | 0.53 | 0.08 | 0.29 |
| 20:3n-6 | 1.87 | 1.68 | 1.89 | 0.13 | 0.88 |
| 20:4n-6 | 0.28 | 0.27 | 0.25 | 0.02 | 0.15 |
| 22:2n-6 | 0.04 | 0.04 | 0.03 | 0.02 | 0.67 |
| 22:4n-6 | 2.75a | 2.74a | 1.89b | 0.29 | 0.03 |
| 22:5n-6 | 0.80a | 0.74a | 0.51b | 0.06 | <0.01 |
a,b
means within a row with different subscripts differ when P-value < 0.05. c: cis. ∑SFA: sum of saturated fatty acids (6:0, 10:0, 11:0, 12:0, 13:0, 14:0, 15:0, 16:0, 17:0, 18:0, 20:0, 21:0, 22:0, 23:0, 24:0); ∑MUFA: sum of monounsaturated fatty acids (c9-14:1, c10-15:1, c9-16:1, c10-17:1, c9-18:1, c11-20:1, c13-22:1); ∑PUFA: sum of polyunsaturated fatty acids (∑n-3 + ∑n-6); ∑n-3: sum of omega-3 polyunsaturated fatty acids (18:3n-3, 20:3n-3, 20:5n-3, 22:5n-3, 22:6n-3); ∑n-6: sum of omega-6 polyunsaturated fatty acids (18:2n-6, 18:3n-6, 20:3n-6, 20:4n-6, 22:2n-6, 22:4n-6, 22:5n-6).