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Table IV.
Mean values and standard error of the mean (SEM) of daily milk yield (kg·cow−1·d−1), total fat (g·100 g−1 w/w), and fatty acid concentrations (g·100 g−1 FAME) in Alpine milk from cows grazing Festuca nigrescens (F) and Trifolium alpinum (T) pastures, and for experimental period (P1 and P2). (n = 12.)
F | T | P1 | P2 | SEM1 | Pasture2 | Period2 | |
---|---|---|---|---|---|---|---|
Daily milk yield | 15.31 | 14.17 | 15.23 | 14.16 | 0.50 | NS | NS |
Total fat | 4.24 | 4.00 | 4.32 | 3.92 | 0.04 | NS | NS |
C4:0 | 2.81 | 2.77 | 2.83 | 2.75 | 0.04 | NS | NS |
C6:0 | 1.77 | 1.59 | 1.73 | 1.63 | 0.03 | ** | + |
C8:0 | 1.04 | 0.91 | 1.03 | 0.91 | 0.06 | *** | ** |
C10:0 | 2.12 | 1.81 | 2.09 | 1.83 | 0.06 | *** | *** |
C12:0 | 2.59 | 2.26 | 2.54 | 2.31 | 0.01 | *** | *** |
C13:0 | 0.08 | 0.11 | 0.09 | 0.09 | 0.18 | + | NS |
C14:0 | 10.17 | 9.33 | 9.44 | 10.06 | 0.05 | *** | *** |
C14:1 | 1.72 | 1.53 | 1.50 | 1.74 | 0.11 | * | ** |
C15:0 | 1.31 | 1.78 | 1.31 | 1.77 | 0.40 | ** | ** |
C16:0 | 27.81 | 26.42 | 26.26 | 27.97 | 0.05 | * | ** |
C16:1 | 1.82 | 1.82 | 1.95 | 1.69 | 0.06 | NS | ** |
C17:0 | 0.77 | 1.14 | 0.88 | 1.02 | 0.02 | *** | ** |
C17:1 | 0.29 | 0.41 | 0.36 | 0.33 | 0.10 | *** | NS |
C18:0 | 10.82 | 11.21 | 11.07 | 10.96 | 0.04 | + | NS |
C18:1 n-9 | 24.34 | 26.89 | 26.73 | 24.49 | 0.00 | *** | *** |
t11-C18:1 | 3.66 | 3.54 | 3.57 | 3.63 | 0.01 | NS | NS |
Σ t-C18:1 without t11-C18:1 | 0.31 | 0.30 | 0.29 | 0.33 | 0.52 | NS | * |
C18:2 n-6 | 2.82 | 2.79 | 2.83 | 2.78 | 0.06 | NS | NS |
c9t11-CLA | 1.59 | 1.59 | 1.54 | 1.64 | 0.04 | NS | NS |
C18:3 n-6 | 0.25 | 0.26 | 0.24 | 0.27 | 0.01 | NS | NS |
C18:3 n-3 | 1.46 | 1.02 | 1.24 | 1.24 | 0.07 | *** | NS |
C20:1 | 0.19 | 0.22 | 0.18 | 0.23 | 0.01 | + | * |
C20:3 n-6 | 0.13 | 0.19 | 0.16 | 0.17 | 0.02 | + | NS |
C20:3 n-3 | 0.16 | 0.12 | 0.12 | 0.16 | 0.01 | + | + |
Σ SFA3 | 61.27 | 59.32 | 59.28 | 61.31 | 0.45 | *** | *** |
Σ MUFA4 | 32.32 | 34.71 | 34.58 | 32.44 | 0.50 | *** | *** |
Σ PUFA5 | 6.41 | 5.97 | 6.13 | 6.25 | 0.10 | * | NS |
Σ UFA6 | 38.73 | 40.68 | 40.72 | 38.69 | 0.45 | *** | *** |
Σ short chain FA | 10.32 | 9.33 | 10.22 | 9.43 | 0.53 | ** | ** |
Σ medium chain FA | 43.87 | 42.42 | 41.71 | 44.58 | 0.54 | * | *** |
Σ long chain FA | 45.73 | 48.14 | 47.98 | 45.89 | 0.50 | ** | ** |
Σ n-3 | 1.62 | 1.14 | 1.37 | 1.39 | 0.07 | *** | NS |
Σ n-6 | 3.20 | 3.24 | 3.22 | 3.22 | 0.06 | NS | NS |
Σ n-6/Σ n-3 | 1.99 | 2.87 | 2.41 | 2.45 | 0.15 | *** | NS |
C14:1/C14:0 | 0.17 | 0.16 | 0.16 | 0.17 | 0.21 | NS | * |