Table 4.
Fatty acid (FA) composition (% of all fatty acids analyzed) of the lipids in LD of male dairy cattle with AER in TMR diets.
| Fatty Acids, g/100 g | AER Supplemented, g/kg | SEM | Contrast | ||||
|---|---|---|---|---|---|---|---|
| of Total Fatty Acids | 0 | 20 | 40 | 60 | L | Q | |
| Saturated FA (SFA) | |||||||
| C14:0 | 2.88 | 2.28 | 3.36 | 2.47 | 0.370 | 0.92 | 0.71 |
| C15:0 | 0.05 | 0.14 | 0.15 | 0.11 | 0.055 | 0.44 | 0.24 |
| C16:0 | 23.50 | 22.48 | 24.13 | 20.80 | 0.844 | 0.11 | 0.19 |
| C17:0 | 0.52 | 0.53 | 0.50 | 0.48 | 0.045 | 0.47 | 0.72 |
| C18:0 | 16.18 | 16.88 | 16.48 | 16.81 | 1.080 | 0.76 | 0.86 |
| C20:0 | 0.18 | 0.21 | 0.17 | 0.27 | 0.048 | 0.31 | 0.45 |
| C22:0 | 0.19 | 0.21 | 0.21 | 0.30 | 0.038 | 0.06 | 0.37 |
| Other SFA | 0.49 | 0.59 | 0.49 | 0.60 | 0.101 | 0.58 | 0.95 |
| Total SFA | 43.99 | 42.79 | 45.49 | 41.14 | 1.595 | 0.42 | 0.34 |
| Monounsaturated FA (MUFA) | |||||||
| C16:1 cis-9 | 3.13 | 2.28 | 2.75 | 2.03 | 0.339 | 0.08 | 0.87 |
| C17:1 cis-10 | 0.81 | 0.82 | 0.65 | 0.84 | 0.076 | 0.81 | 0.24 |
| C18:1 cis-9 | 34.26 | 30.91 | 29.89 | 29.31 | 1.615 | 0.05 | 0.41 |
| C20:1 cis-11 | 0.20 | 0.20 | 0.21 | 0.21 | 0.036 | 0.88 | 0.94 |
| Other MUFA | 1.05 | 0.83 | 1.05 | 0.89 | 0.222 | 0.79 | 0.91 |
| Total MUFA | 39.44 | 35.04 | 34.56 | 33.27 | 2.144 | 0.06 | 0.46 |
| Polyunsaturated FA (PUFA) | |||||||
| C18:2 n-6 | 8.50 | 11.85 | 11.09 | 13.82 | 0.861 | <0.01 | 0.72 |
| C18:3 n-3 | 0.42 | 0.60 | 0.56 | 0.72 | 0.040 | <0.01 | 0.63 |
| C20:3 n-6 | 1.32 | 1.71 | 1.71 | 1.89 | 0.145 | 0.05 | 0.74 |
| C20:4 n-6 | 5.21 | 6.59 | 5.88 | 7.68 | 0.566 | 0.01 | 0.69 |
| C20:5 n-3 (EPA) | 0.21 | 0.34 | 0.31 | 0.38 | 0.035 | 0.01 | 0.49 |
| C22:6 n-3 (DHA) | 0.30 | 0.32 | 0.30 | 0.39 | 0.033 | 0.19 | 0.29 |
| Other PUFA | 0.60 | 0.66 | 0.38 | 0.69 | 0.172 | 0.99 | 0.23 |
| Total PUFA | 16.57 | 22.17 | 19.95 | 25.59 | 1.522 | <0.01 | 0.98 |
| Total PUFA n-3 | 0.94 | 1.26 | 1.18 | 1.50 | 0.091 | <0.01 | 0.96 |
| Total PUFA n-6 | 15.03 | 20.15 | 18.39 | 23.41 | 1.455 | <0.01 | 0.97 |
| Total UFA | 56.01 | 57.21 | 54.51 | 58.86 | 1.549 | 0.29 | 0.2 |
| UFA/SFA | 1.27 | 1.33 | 1.21 | 1.43 | 0.078 | 0.34 | 0.33 |
| PUFA/SFA ratio | 0.37 | 0.50 | 0.43 | 0.61 | 0.040 | <0.01 | 0.60 |
| MUFA/SFA ratio | 0.90 | 0.83 | 0.77 | 0.81 | 0.067 | 0.28 | 0.41 |
| n-6/n-3 ratio | 15.96 | 16.09 | 15.64 | 15.56 | 0.804 | 0.71 | 0.94 |
| Saturation index (SI) | 0.45 | 0.45 | 0.50 | 0.43 | 0.033 | 0.98 | 0.28 |
| D9-desaturase 16 | 11.66 | 9.39 | 10.24 | 9.13 | 1.171 | 0.22 | 0.63 |
| D9-desaturase 18 | 68.00 | 64.50 | 64.35 | 63.61 | 2.531 | 0.26 | 0.63 |
| IMF content (%) | 5.36 | 4.85 | 5.83 | 4.03 | 0.650 | 0.32 | 0.34 |
EPA: eicosapentaenoic acid; DHA: docosahexaenoic acid; SEM: standard error of means; L: linear; Q: quadratic; AER: anthocyanin extracted residue; LD: Longissimus dorsi; TMR: total mixed ration; IMF: intramuscular fat.