Skip to main content
. 2010 Feb 19;76(8):2549–2555. doi: 10.1128/AEM.02583-09

TABLE 2.

Effect of tannin supplementation on ruminal fatty acid composition

Fatty acid (name, group, or ratio) Value for indicated dietary treatmenta
 SEM Significance
Concentrate (n = 7) Concentrate plus tannins (n = 6)
C12:0 0.24 0.93 0.150 0.014
C13:0 0.16 0.33 0.035 0.005
C14:0 1.82 2.55 0.181 0.036
C15:0 2.25 2.38 0.187 0.746
C16:0 16.43 22.86 1.426 0.016
C17:0 1.25 1.17 0.114 0.735
C18:0 50.45 43.92 2.074 0.120
iso C12:0 0.09 0.05 0.011 0.082
iso C13:0 0.30 0.52 0.056 0.040
iso C14:0 0.67 0.44 0.071 0.115
iso C15:0 2.58 1.32 0.308 0.035
iso C16:0 1.06 0.75 0.192 0.448
iso C17:0 0.75 0.67 0.115 0.745
iso C18:0 0.26 0.14 0.055 0.282
    ∑iso BCFAb 5.71 3.90 0.493 0.063
anteiso C13:0 0.07 0.06 0.020 0.827
anteiso C15:0 1.97 1.67 0.142 0.319
anteiso C17:0 0.75 0.78 0.091 0.874
    ∑anteiso BCFAc 3.62 2.95 0.181 0.431
    ∑OBCFAd 9.75 8.06 0.636 0.197
C16:1c9 0.13 0.12 0.045 0.843
C17:1c9 0.23 0.12 0.028 0.036
C18:1c9 2.24 3.02 0.458 0.417
C18:1c11 0.49 0.49 0.111 0.990
C18:1c12 0.26 0.25 0.036 0.886
C18:1c15 0.88 0.57 0.122 0.214
C18:1t4 0.07 0.02 0.009 0.009
C18:1t6 to t8 0.67 0.28 0.115 0.091
C18:1t9 0.40 0.16 0.066 0.068
C18:1t10 3.52 1.21 0.679 0.089
C18:1t11 1.47 3.06 0.287 0.001
C18:1t12 0.50 0.31 0.053 0.077
C18:1t13 0.79 0.54 0.087 0.153
C18:1t15 0.67 0.61 0.085 0.773
C18:1t16 0.11 0.51 0.069 0.000
    ∑TFAe 8.19 6.71 0.853 0.412
C18:2c10c12 0.012 0.006 0.007 0.671
C18:2t10c12 0.06 0.01 0.020 0.288
C18:2c11t13 0.007 0.008 0.003 0.950
C18:2t11t13 0.03 0.03 0.006 0.918
C18:2t8t10 0.09 0.17 0.040 0.353
C18:2c9c11 0.01 0.03 0.010 0.213
    ∑CLAf 0.23 0.66 0.188 0.265
C18:2c9c12 1.17 1.83 0.296 0.285
C18:2t11c15 0.40 0.17 0.057 0.044
C18:2t9t12 0.05 0.02 0.015 0.424
C18:3c6c9c12 0.26 0.07 0.056 0.082
C18:3c9c12c15 0.21 0.28 0.046 0.491
C18:0 /C18:1t11 36.39 15.74 3.850 0.002
C15:0 /∑OBCFA 0.22 0.30 0.017 0.024
iso C15:0 /∑OBCFA 0.26 0.15 0.028 0.044
anteiso C15:0 /∑OBCFA 0.20 0.21 0.012 0.777
C17:0 /∑OBCFA 0.13 0.15 0.007 0.322
iso C17:0 /∑OBCFA 0.077 0.073 0.010 0.949
anteiso C17:0 /∑OBCFA 0.077 0.10 0.028 0.307
∑SFAg 83.10 82.29 1.472 0.797
∑MUFAh 12.72 11.84 1.058 0.699
∑PUFAi 2.30 3.01 0.367 0.359
a

In % of total fatty acids. n, number of sheep.

b

∑iso BCFA = iso C12:0 + iso C13:0 + iso C14:0 + iso C15:0 + iso C16:0 + iso C17:0 + iso C18.:0.

c

∑anteiso BCFA = anteiso C13:0 + anteiso C15:0 + anteiso C17:0.

d

∑OBCFA = C15:0 + iso C15:0 + anteiso C15:0 + C17:0 + iso C17:0 + anteiso C17:0.

e

∑TFA = C18:1 t4 + C18:1 t6 to t8 + C18:1 t9 + C18:1 t10 + C18:1 t11 + C18:1 t12 + C18:1 t13 + C18:1 t15 + C18:1 t16.

f

∑CLA = C18:2 c10c12 + C18:2 t10c12 + C18:2 c11t13 + C18:2 t11t13 + C18:2 t8t10 + C18:2 c9t11 + C18:2 c9c11. The average values for C18:2 c9t11 are not reported in the table but are reported in Fig. 1.

g

∑SFA = C10:0 + C11:0 + C12:0 + iso C12:0 + C13:0 + iso C13:0 + anteiso C13:0 + C14:0 + iso C14:0 + C15:0 + iso C15:0 + anteiso C15:0 + C16:0 + iso C16:0 + C17:0 + iso C17:0 + anteiso C17:0 + C18:0 + iso C18:0 + C20:0 + C21:0 + C22:0 + C24:0.

h

∑MUFA = C16:1 c9 + C17:1 c9 + C18:1 c9 + C18:1 c11 + C18:1 c12 + C18:1 c15 + C18:1 t4 + C18:1 t6 to t8 + C18:1 t9 + C18:1 t10 + C18:1 t11 + C18:1 t12 + C18:1 t13 + C18:1 t15 + C18:1 t16 + C18:1 c9, 12-OH.

i

∑PUFA = C18:2 c10c12 + C18:2 t10c12 + C18:2 c11t13 + C18:2 t11t13 + C18:2 t8t10 + C18:2 c9t11 + C18:2 c9c11 + C18:2 t11c15 + C18:2 t9t12 + C18:3 c6c9c12 + C18:3 c9c12c15.