Table 1.
g/100 g milka | Percent of total fatty acidsb | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Mean | n | SD | CV (%) | SE | Mean | n | SD | CV (%) | SE | |
Fat measured at farm | 4.237 | 1162 | 0.49 | 12 | 0.014 | |||||
Total triglyceride (calculated) | 3.881 | 1161 | 0.53 | 14 | 0.016 | |||||
Total fatty acids | 3.585 | 1161 | 0.48 | 13 | 0.014 | 99.996 | 1160 | 0.15 | 0.1 | 0.004 |
Saturated fatty acids | ||||||||||
4:0 butyric | 0.09202 | 1163 | 0.015 | 17 | 0.00045 | 2.572 | 1163 | 0.31 | 12 | 0.009 |
6:0 caproic | 0.06967 | 1158 | 0.013 | 18 | 0.00037 | 1.940 | 1158 | 0.21 | 11 | 0.006 |
8:0 caprylic | 0.04088 | 1160 | 0.009 | 21 | 0.00025 | 1.136 | 1160 | 0.16 | 14 | 0.005 |
10:0 capric | 0.0963 | 1163 | 0.022 | 23 | 0.0007 | 2.671 | 1163 | 0.42 | 16 | 0.012 |
12:0 lauric | 0.1106 | 1162 | 0.027 | 24 | 0.0008 | 3.066 | 1162 | 0.50 | 16 | 0.015 |
14:0 myristic | 0.3997 | 1160 | 0.07 | 18 | 0.0021 | 11.114 | 1160 | 1.1 | 10 | 0.032 |
15:0 pentadecanoic | 0.05619 | 1163 | 0.012 | 21 | 0.00034 | 1.567 | 1163 | 0.24 | 16 | 0.007 |
16:0 palmitic | 1.116 | 1162 | 0.24 | 21 | 0.007 | 31.00 | 1162 | 4.3 | 14 | 0.13 |
17:0 margaric | 0.0315 | 1163 | 0.007 | 21 | 0.00019 | 0.878 | 1163 | 0.13 | 15 | 0.004 |
18:0 stearic | 0.3738 | 1163 | 0.08 | 22 | 0.0024 | 10.455 | 1163 | 2.0 | 19 | 0.057 |
20:0 arachidic | 0.006756 | 1149 | 0.0016 | 24 | 0.000047 | 0.1878 | 1149 | 0.035 | 19 | 0.0010 |
22:0 behenic | 0.004552 | 1155 | 0.0016 | 34 | 0.000046 | 0.1269 | 1155 | 0.040 | 32 | 0.0012 |
24:0 lignoceric | 0.002443 | 1153 | 0.0007 | 28 | 0.000020 | 0.0682 | 1153 | 0.015 | 22 | 0.0004 |
Total saturatedc | 2.399 | 1163 | 0.39 | 16 | 0.011 | 66.71 | 1162 | 4.2 | 6 | 0.12 |
Monounsaturated fatty acids | ||||||||||
14:1 myristoleic | 0.03404 | 1160 | 0.0095 | 28 | 0.00028 | 0.944 | 1160 | 0.20 | 22 | 0.006 |
16:1 palmitoleic | 0.05643 | 1159 | 0.014 | 26 | 0.00043 | 1.571 | 1159 | 0.33 | 21 | 0.010 |
17:1 margaroleic | 0.01052 | 1157 | 0.0029 | 28 | 0.00009 | 0.295 | 1157 | 0.08 | 26 | 0.002 |
18:1 including oleic | 0.7258 | 1163 | 0.12 | 16 | 0.0034 | 20.36 | 1162 | 2.8 | 14 | 0.08 |
20:1 including gadoleic | 0.00724 | 1161 | 0.0020 | 28 | 0.00006 | 0.2024 | 1161 | 0.05 | 25 | 0.0015 |
Total cis‐monounsaturatedc | 0.8352 | 1163 | 0.12 | 15 | 0.0036 | 23.41 | 1162 | 2.6 | 11 | 0.08 |
ω‐3 fatty acids | ||||||||||
18:3 α‐linolenic, ALA | 0.04409 | 1163 | 0.011 | 25 | 0.00032 | 1.229 | 1163 | 0.26 | 21 | 0.008 |
18:4 stearidonic/moroctic | 0.002636 | 841 | 0.0010 | 37 | 0.000034 | 0.0729 | 844 | 0.025 | 35 | 0.0009 |
20:3 11,14,17‐eicosatrienoic | 0.001139 | 736 | 0.00036 | 32 | 0.000013 | 0.0306 | 747 | 0.009 | 31 | 0.0003 |
20:5 eicosapentaenoic, EPA | 0.004132 | 1157 | 0.0010 | 23 | 0.000029 | 0.1148 | 1157 | 0.021 | 18 | 0.0006 |
22:3 docosatrienoic | 0.00114 | 14 | 0.00036 | 32 | 0.00010 | 0.028 | 16 | 0.015 | 53 | 0.004 |
22:5 docosapentaenoic, DPA | 0.005432 | 1158 | 0.0012 | 23 | 0.000036 | 0.1519 | 1158 | 0.030 | 20 | 0.0009 |
22:6 docosahexaenoic, DHA | 0.001064 | 249 | 0.0005 | 50 | 0.000034 | 0.0266 | 258 | 0.018 | 67 | 0.0011 |
Total ω‐3d | 0.05645 | 1161 | 0.013 | 23 | 0.00038 | 1.573 | 1161 | 0.30 | 19 | 0.009 |
ω‐6 fatty acids | ||||||||||
18:2 linoleic, LA | 0.04469 | 1156 | 0.010 | 22 | 0.00029 | 1.254 | 1156 | 0.27 | 22 | 0.008 |
18:3 γ‐linolenic, GLA | 0.001100 | 649 | 0.00031 | 28 | 0.000012 | 0.0299 | 670 | 0.009 | 31 | 0.0004 |
20:2 eicosadienoic | 0.001031 | 717 | 0.00017 | 17 | 0.000006 | 0.0258 | 743 | 0.007 | 28 | 0.0003 |
20:3 8,11,14‐eicosatrienoic (γ) | 0.001964 | 1113 | 0.0006 | 32 | 0.000019 | 0.0548 | 1114 | 0.014 | 26 | 0.0004 |
20:4 arachidonic, AA | 0.003453 | 1131 | 0.0015 | 43 | 0.000045 | 0.0920 | 1132 | 0.043 | 46 | 0.0013 |
22:2 docosadienoic | 0.001803 | 969 | 0.0007 | 39 | 0.000023 | 0.0502 | 975 | 0.017 | 33 | 0.0005 |
22:4 docosatetraenoic | 0.00118 | 91 | 0.0005 | 47 | 0.00006 | 0.024 | 108 | 0.016 | 70 | 0.002 |
Total ω‐6d | 0.05250 | 1163 | 0.012 | 22 | 0.00034 | 1.467 | 1163 | 0.31 | 21 | 0.009 |
Total cis‐polyunsaturatedc | 0.10885 | 1161 | 0.022 | 21 | 0.00066 | 3.045 | 1161 | 0.5 | 17 | 0.015 |
trans fatty acids | ||||||||||
trans‐14:1 | 0.01335 | 1162 | 0.0029 | 22 | 0.00008 | 0.372 | 1162 | 0.07 | 17 | 0.002 |
trans‐16:1, trans‐palmitoleic | 0.01964 | 1159 | 0.0042 | 21 | 0.00012 | 0.551 | 1159 | 0.11 | 20 | 0.003 |
trans‐18:1 including elaidic | 0.1381 | 1160 | 0.05 | 39 | 0.0016 | 3.885 | 1160 | 1.5 | 39 | 0.045 |
trans‐18:2 octadecadienoic | 0.02203 | 1159 | 0.008 | 35 | 0.00022 | 0.618 | 1159 | 0.21 | 34 | 0.006 |
Total trans fatty acidsc | 0.1934 | 1163 | 0.06 | 31 | 0.0018 | 5.430 | 1163 | 1.7 | 31 | 0.049 |
Conjugated linoleic acid, CLA | ||||||||||
18:2 conjugated, total | 0.0498 | 1163 | 0.019 | 38 | 0.0006 | 1.403 | 1163 | 0.5 | 38 | 0.016 |
Sum | ||||||||||
ALA + CLA | 0.0939 | 1163 | 0.022 | 24 | 0.0006 | 2.633 | 1163 | 0.6 | 22 | 0.017 |
Ratios | ||||||||||
LA/ALA | 1.042 | 1156 | 0.21 | 21 | 0.006 | 1.042 | 1156 | 0.21 | 21 | 0.006 |
ω‐6/ω‐3 | 0.954 | 1154 | 0.18 | 19 | 0.005 | 0.947 | 1161 | 0.19 | 20 | 0.006 |
ω‐3/ω‐6 | 1.083 | 1154 | 0.20 | 18 | 0.006 | 1.131 | 1161 | 0.6 | 54 | 0.018 |
For FAs reported in units of g/100 g milk, means and the other statistics are based on quantified amounts ≥ 0.001 g/100 g (samples < 0.001 g/100 g not included). Hence, for minor FAs with n substantially <1,163, means are elevated, and other statistics are based on the distribution of samples ≥0.001 g/100 g.
For units of % of total FAs, means and other statistics have the same properties as noted above for units of g/100 g milk. For a few minor FAs, the laboratory quantified up to 26 more samples in units of % of total FAs than it did in units of g/100 g, increasing the n‐values shown here. In rare cases, the n‐values differ also by ± 1 due to differences in the number of outliers removed.
An average of sums reported by the laboratory for each sample. The laboratory sums include minor FAs reported in Table S1 but not tabulated here, so they usually slightly exceed the sum of means for the individual FAs listed here.
An average of sums of all 7 FAs for each sample. This average is slightly smaller than the sum of means shown for each FA, because some of the latter means are substantially elevated by exclusion of values < 0.001 mg/100 g milk (footnotea).