Percentage contribution of fatty acids of cow and mare milk fat (%)
| Fatty acid | Cow milk | Mare milk | ||||
|---|---|---|---|---|---|---|
| Mean | ±SD | Range | Mean | ± SD | Range | |
| C4:0 | 3.27 | ±0.28 a | (2.78–3.76) | 0.17 | ±0.07 b | (0.05–0.28) |
| C6:0 | 2.22 | ±0.20 a | (1.81–2.43) | 0.31 | ±0.26 b | (0.01–1.02) |
| C8:0 | 1.41 | ±0.14 b | (1.16–1.59) | 2.84 | ±1.51 a | (0.05–5.45) |
| C10:0 | 3.21 | ±0.45 b | (2.49–3.82) | 7.09 | ±3.05 a | (1.79–13.69) |
| C11:0 | 0.05 | ±0.02 a | (0.03–0.08) | 0.02 | ±0.03 b | (0.00–0.09) |
| C12:0 | 3.57 | ±0.51 b | (2.73–4.25) | 6.1 | ±2.46 a | (2.13–10.42) |
| C13:0 iso | 0.07 | ±0.02 a | (0.05–0.09) | 0.07 | ±0.10 a | (0.0–0.35) |
| C13:0 | 0.20 | ±0.03 a | (0.14–0.24) | 0.11 | ±0.08 b | (0.02–0.33) |
| C14:0 iso | 0.21 | ±0.07 a | (0.07–0.28) | 0.05 | ±0.03 b | (0.03–0.17) |
| C14:0 | 11.01 | ±1.49 a | (8.16–12.83) | 6.60 | ±1.79 b | (4.02–9.36) |
| C15:0 iso | 0.43 | ±0.15 a | (0.18–0.58) | 0.06 | ±0.05 b | (0.0–0.20) |
| C15:0 aiso | 0.76 | ±0.31 a | (0.27–1.12) | 0.08 | ±0.09 b | (0.0–0.36) |
| C15:0 | 1.45 | ±0.46 a | (0.81–1.94) | 0.26 | ±0.16 b | (0.0–0.74) |
| C16:0 iso | 0.40 | ±0.11 a | (0.22–0.53) | 0.13 | ±0.04 b | (0.0–0.23) |
| C16:0 | 26.22 | ±2.91 a | (22.63–31.15) | 22.3 | ±1.69 b | (20.0–26.75) |
| C17:0 | 0.88 | ±0.07 a | (0.79–0.98) | 0.31 | ±0.15 b | (0.2–0.83) |
| C18:0 | 11.41 | ±1.88 a | (9.13–14.95) | 1.94 | ±0.48 b | (0.75–2.46) |
| C20:0 | 0.18 | ±0.07 a | (0.03–0.31) | 0.08 | ±0.04 b | (0.01–0.21) |
| C10:1 | 0.26 | ±0.04 b | (0.16–0.32) | 0.78 | ±0.65 a | (0.05–2.54) |
| C12:1 | 0.07 | ±0.03 a | (0.02–0.12) | 0.03 | ±0.03 b | (0.0–0.10) |
| C14:1 | 0.81 | ±0.12 a | (0.61–1.01) | 0.30 | ±0.21 b | (0.0–0.92) |
| C16:1 | 1.46 | ±0.5 b | (0.75–2.22) | 5.11 | ±1.51 a | (2.76–8.14) |
| C17:1 | 0.30 | ±0.10 a | (0.18–0.5) | 0.35 | ±0.13 a | (0.16–0.61) |
| C18:1 cis 9 | 19.61 | ±3.34 b | (15.30–25.24) | 22.46 | ±4.57 a | (14.51–30.0) |
| C18:1 cis 11 | 1.27 | ±2.29 a | (0.45–8.51) | 1.69 | ±0.44 a | (1.0–2.39) |
| C18:1 cis 12 | 0.14 | ±0.04 | (0.1–0.26) | 0.0 | ±0.0 | (ND) |
| C18:1 cis 13 | 0.11 | ±0.06 a | (0.05–0.23) | 0.18 | ±0.26 a | (0.01–1.07) |
| C18:1 trans6 | 0.15 | ±0.09 a | (0.00–0.28) | 0.01 | ±0.01 b | (0.0–0.04) |
| C18:1 trans9 | 0.28 | ±0.04 a | (0.20–0.33) | 0.05 | ±0.02 b | (0.02–0.12) |
| C18:1 trans10+trans11 | 3.55 | ±1.59 a | (0.87–5.63) | 0.27 | ±0.44 b | (0.0–1.57) |
| C18:1 trans12 | 0.21 | ±0.04 a | (0.16–0.27) | 0.01 | ±0.01 b | (0.0–0.03) |
| C18:1 trans16 | 0.32 | ±0.07 a | (0.23–0.45) | 0.02 | ±0.09 b | (0.0–0.43) |
| C20:1 | 0.13 | ±0.03 b | (0.09–0.19) | 0.39 | ±0.20 a | (0.01–0.94) |
| C18:2 cis9cis12 | 1.31 | ±0.17 b | (1.04–1.54) | 11.70 | ±4.18 a | (3.47–19.76) |
| C18:2 trans13cis9 | 0.19 | ±0.06 a | (0.14–0.32) | 0.01 | ±0.02 b | (0.0–0.08) |
| C18:2 trans12cis9 | 0.25 | ±0.07 a | (0.17–0.41) | 0.04 | ±0.04 b | (0.0–0.14) |
| C18:2 trans9cis12 | 0.07 | ±0.03 a | (0.03–0.12) | 0.01 | ±0.02 b | (0.0–0.08) |
| C18:2 trans11cis15 | 0.54 | ±0.27 a | (0.12–0.95) | 0.01 | ±0.02 b | (0.0–0.6) |
| C18:2 cis9trans11 CLA | 1.18 | ±0.69 a | (0.41–2.51) | 0.02 | ±0.02 b | (0.0–0.05) |
| C18:3 | 0.85 | ±0.10 b | (0.73–1.05) | 8.11 | ±3.43 a | (1.5–13.3) |
| ΣSFA | 66.93 | ±4.85 a | (58.39–71.65) | 48.51 | ±8.97 b | (35.96–66.56) |
| ΣMUFA | 28.65 | ±4.63 a | (23.97–38.30) | 31.65 | ±5.58 a | (22.86–41.31) |
| ΣPUFA | 4.42 | ±1.08 b | (3.22–6.45) | 19.90 | ±6.27 a | (8.05–28.05) |
Content of chlorinated hydrocarbons in cow and mare milk fat (μg/kg of fat)
| Chlorinated hydrocarbons | Cow milk | Mare milk | ||||
|---|---|---|---|---|---|---|
| Mean | ±SD | Range | Mean | ±SD | Range | |
| γ-HCH | 0.46 | ±0.32 b | (0.13–1.05) | 4.61 | ±1.16 a | (2.9–6.62) |
| DDE | 4.65 | ±1.65 a | (2.96–7.92) | 3.90 | ±2.6 a | (1.52–10.56) |
| DDD | BDL | ±ND | (BDL) | 0.21 | ±0.25 | (BDL–0.62) |
| DDT | 4.56 | ±3.06 b | (0.27–10.31) | 11.06 | ±1.57 a | (8.23–13.15) |
| ΣDDT | 9.20 | ±4.06 b | (3.47–15.69) | 15.17 | ±3.2 a | (10.71–22.24) |
Correlation between chlorinated hydrocarbons content and fatty acid composition in cow and mare milk fat
| Fatty acid | Cow milk | Mare milk | |||||||
|---|---|---|---|---|---|---|---|---|---|
| γ-HCH | DDE | DDT | Σ DDT | γ-HCH | DDE | DDD | DDT | Σ DDT | |
| C4:0 | NS | −0.52 correlation significant at P < 0.01 | NS | NS | NS | NS | NS | NS | NS |
| C6:0 | 0.37 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | NS | NS | NS |
| C8:0 | 0.43 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | NS | NS | NS |
| C10:0 | 0.47 correlation significant at P < 0.01 | NS | 0.35 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | NS |
| C11:0 | 0.56 correlation significant at P < 0.001 | 0.49 correlation significant at P < 0.01 | NS | 0.34 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| C12:0 | 0.49 correlation significant at P < 0.01 | NS | 0.49 correlation significant at P < 0.01 | 0.43 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| C13:0 iso | NS | NS | 0.36 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | NS |
| C13:0 | NS | 0.59 correlation significant at P < 0.001 | NS | NS | −0.80 correlation significant at P < 0.01 | NS | NS | NS | NS |
| C14:0 iso | NS | 0.71 correlation significant at P < 0.001 | NS | 0.39 correlation significant at P < 0.01 | 0.73 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C14:0 | 0.46 correlation significant at P < 0.01 | NS | 0.66 correlation significant at P < 0.001 | 0.61 correlation significant at P < 0.001 | −0.72 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C15:0 iso | NS | 0.68 correlation significant at P < 0.001 | NS | 0.47 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| C15:0 aiso | NS | 0.70 correlation significant at P < 0.001 | NS | 0.48 correlation significant at P < 0.01 | NS | NS | NS | NS | NS |
| C15:0 | NS | 0.71 correlation significant at P < 0.001 | NS | 0.51 correlation significant at P < 0.01 | NS | NS | NS | NS | NS |
| C16:0 iso | NS | 0.69 correlation significant at P < 0.001 | NS | 0.43 correlation significant at P < 0.05 | NS | −0.72 correlation significant at P < 0.05 | NS | NS | −0.64 correlation significant at P < 0.05 |
| C16:0 | NS | −0.41 correlation significant at P < 0.05 | 0.36 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | NS |
| C17:0 | NS | 0.56 correlation significant at P < 0.001 | NS | NS | NS | NS | NS | NS | −0.64 correlation significant at P < 0.05 |
| C18:0 | NS | 0.36 correlation significant at P < 0.05 | −0.40 correlation significant at P < 0.05 | NS | NS | NS | NS | −0.69 correlation significant at P < 0.05 | NS |
| C20:0 | NS | NS | NS | NS | NS | NS | NS | NS | NS |
| C10:1 | NS | 0.54 correlation significant at P < 0.001 | 0.74 correlation significant at P < 0.001 | 0.79 correlation significant at P < 0.001 | −0.67 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C12:1 | NS | 0.68 correlation significant at P < 0.001 | NS | 0.43 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| C14:1 | NS | NS | NS | NS | NS | NS | NS | NS | NS |
| C16:1 | −0.47 correlation significant at P < 0.01 | −0.57 correlation significant at P < 0.001 | NS | −0.39 correlation significant at P < 0.05 | 0.71 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C17:1 | −0 55 correlation significant at P < 0.001 | −0.46 correlation significant at P < 0.01 | −0.46 correlation significant at P < 0.01 | −0.54 correlation significant at P < 0.001 | 0.63 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C18:1 c9 | −0.49 correlation significant at P < 0.01 | NS | −0.39 correlation significant at P < 0.05 | −0.43 correlation significant at P < 0.01 | 0.64 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C18:1 c11 | NS | NS | −0.47 correlation significant at P < 0.01 | −0.49 correlation significant at P < 0.01 | 0.75 correlation significant at P < 0.05 | NS | NS | NS | NS |
| C18:1 c12 | NS | NS | −0.41 correlation significant at P < 0.05 | NS | ND | ND | ND | ND | ND |
| C18:1 c13 | NS | −0.41 correlation significant at P < 0.05 | −0.63 correlation significant at P < 0.001 | −0.64 correlation significant at P < 0.001 | NS | NS | NS | NS | NS |
| C18:1 t6 | NS | 0.68 correlation significant at P < 0.001 | NS | 0.47 correlation significant at P < 0.01 | NS | NS | NS | NS | NS |
| C18:1 t9 | NS | NS | NS | NS | NS | NS | NS | NS | NS |
| C18:1 t10+t11 | NS | NS | 0.42 correlation significant at P < 0.05 | NS | NS | NS | NS | NS | |
| C18:1 t12 | NS | 0.55 correlation significant at P < 0.001 | NS | NS | NS | NS | NS | NS | NS |
| C18:1 t16 | 0.36 correlation significant at P < 0.05 | 0.62 correlation significant at P < 0.001 | NS | NS | NS | NS | NS | NS | NS |
| C20:1 | NS | 0.62 correlation significant at P < 0.001 | NS | 0.49 correlation significant at P < 0.01 | NS | NS | NS | NS | NS |
| C18:2 c9c12 | −0.39 correlation significant at P < 0.05 | −0.67 correlation significant at P < 0.001 | NS | NS | NS | 0.70 correlation significant at P < 0.05 | NS | NS | 0.73 correlation significant at P < 0.05 |
| C18:2 t13c9 | NS | 0.48 correlation significant at P < 0.01 | NS | 0.36 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| C18:2 t12c9 | NS | NS | NS | NS | NS | NS | NS | NS | NS |
| C18:2 t9c12 | NS | 0.39 correlation significant at P < 0.05 | NS | 0.41 correlation significant at P < 0.05 | NS | NS | NS | 0.87 correlation significant at P < 0.001 | NS |
| C18:2 t11c15 | NS | 0.64 correlation significant at P < 0.001 | NS | 0.42 correlation significant at P < 0.05 | NS | 0.65 correlation significant at P < 0.05 | NS | NS | NS |
| C18:2 c9t11 | NS | 0.47 correlation significant at P < 0.01 | 0.36 correlation significant at P < 0.05 | 0.47 correlation significant at P < 0.01 | NS | NS | NS | NS | NS |
| C18:3 | NS | NS | NS | NS | NS | −0.77 correlation significant at P < 0.01 | NS | NS | −0.81 correlation significant at P < 0.01 |
| ΣSFA | 0.55 correlation significant at P < 0.001 | NS | 0.39 correlation significant at P < 0.05 | 0.36 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |
| ΣMUFA | −0.52 correlation significant at P < 0.01 | NS | −0.48 correlation significant at P < 0.01 | −0.46 correlation significant at P < 0.01 | 0.67 correlation significant at P < 0.05 | NS | NS | NS | NS |
| ΣPUFA | NS | 0.41 correlation significant at P < 0.05 | NS | 0.42 correlation significant at P < 0.05 | NS | NS | NS | NS | NS |