Table 2.
Main fatty acids and CLA isomers (percentage of total fatty acids) and total CLA (percentage of total fatty acids) of diets with different CLA incorporation levels (0%, 1%, 2% or 4%)
| Fatty acids | Content (%) |
|||
| 0% CLA | 1% CLA | 2% CLA | 4% CLA | |
| C14:0 | 1.08±0.05a | 1.09±0.04a | 0.95±0.02b | 0.59±0.01c |
| C16:0 | 18.48±0.27a | 17.58±0.08b | 16.44±0.16c | 14.57±0.07d |
| C18:0 | 9.64±0.19a | 9.37±0.03ab | 9.24±0.11b | 9.09±0.03b |
| Other saturated | 2.67±0.06a | 2.65±0.15a | 2.50±0.04a | 2.19±0.07b |
| ∑saturated1 | 31.87±0.08a | 30.69±0.13b | 29.14±0.08c | 26.44±0.04d |
| C16:1 n-7 | 2.43±0.32a | 212±0.06a | 2.09±0.02a | 1.58±0.04b |
| C18:1 n-9 | 22.28±0.16 | 21.42±0.03 | 21.09±0.07 | 18.62±0.06 |
| C22:1 n-9 | 0.78±0.09a | 0.55±0.01b | 0.48±0.03b | 0.43±0.02b |
| Other monounsaturated | 1.30±0.02a | 1.62±0.03b | 1.57±0.08b | 1.30±0.05a |
| ∑monounsaturated2 | 26.78±0.37a | 25.72±0.07b | 25.24±0.01b | 21.92±0.12c |
| C18:2 n-6 | 3.48±0.04 | 3.42±0.08 | 3.45±0.01 | 3.45±0.02 |
| C18:2 cis-9, trans-11 | 0a | 2.42±0.03b | 4.87±0.03c | 9.73±0.02d |
| C18:2 trans-10, cis-12 | 0a | 2.42±0.03b | 4.89±0.02c | 9.67±0.02d |
| C20:4 n-6 | 1.03±0.01a | 1.00±0.05a | 0.85±0.01b | 0.82±0.02b |
| C20:5 n-3 | 6.87±0.10a | 6.41±0.06b | 5.74±0.07c | 5.14±0.09d |
| C22:3 n-6 | 0.57±0.09a | 0.59±0.10a | 0.45±0.01ab | 0.33±0.07b |
| C22:5 n-3 | 2.12±0.10 | 2.00±0.02 | 1.85±0.05 | 1.48±0.08 |
| C22:6 n-3 | 14.70±0.32a | 13.14±0.16b | 11.66±0.02c | 9.77±0.21d |
| Other polyunsaturated | 10.58±0.04a | 10.19±0.03b | 10.09±0.13b | 9.72±0.04c |
| ∑polyunsaturated3 | 41.35±0.45a | 43.59±0.14b | 45.73±0.25c | 51.64±0.16d |
| Total CLA4 | 0a | 4.84±0.04b | 9.77±0.03c | 19.40±0.03d |
The values are mean±SD (n=3). Different superscript letters in the same row denote significant differences (P<0.05) between diets as determined by one-way analysis of variance (ANOVA) with Tukey’s post-test;
Saturated: C14:0, C15:0, C16:0, C17:0, C18:0, C20:0;
Monounsaturated: C15:1 n-7, C16:1 n-7, C17:1 n-9, C18:1 n-9, C20:1 n-9, C22:1 n-9, C24:1 n-9;
Polyunsaturated: C16:2 n-4, C20:2 n-6, C16:2 n-6, C18:1 n-6, C18:2 n-6, C18:2 cis-9, trans-11, C18:2 trans-10, cis-12, C20:4 n-6, C22:3 n-6, C16:3 n-3, C18:3 n-3, C18:4 n-3, C20:5 n-3, C22:5 n-3, C22:6 n-3;
Sum of CLA isomers cis-9, trans-11 and trans-10, cis-12