Table 2.
Spectrum of free fatty acids (μg/μL) in blood serum of dairy cows under conditions of hyperthermia (HYP) or in the control group (CON), presented as median (25th and 75th percentile values in brackets).
| Fatty Acid | Group of Animals | |
|---|---|---|
| HYP (n = 8) | CON (n = 10) | |
| Saturated fatty acids (SFA) | ||
| Butyric acid (C4:0) | 0.083 (0.054; 2.945) a | 0.001 (0.001; 0.001) b |
| Caproic acid (C6:0) | 0.939 (0.056; 1.163) a | 0.049 (0.049; 0.049) a |
| Caprylic acid (C8:0) | 0.897 (0.464; 1.124) | BDL |
| Capric acid (C10:0) | 0.008 (0.005; 0.014) | BDL |
| Undecanoic acid (C11:0) | 0.007 (0.001; 0.007) | BDL |
| Lauric acid (C12:0) | 0.008 (0.004; 0.015) a | 0.006 (0.004; 0.027) a |
| Tridecanoic acid (13:0) | 0.002 (0.001; 0.003) a | 0.002 (0.001; 0.002) a |
| Myristic acid (C14:0) | 0.002 (0.001; 0.003) a | 0.007 (0.005; 0.010) b |
| Pentadecanoic acid (C15:0) | 0.010 (0.005; 0.182) a | 0.15 (0.058; 0.178) a |
| Palmitic acid (C16:0) | 0.013 (0.008; 0.019) a | 0.01 (0.007; 0.015) a |
| Margarinic acid (C17:0) | 0.203 (0.033; 0.555) a | 0.799 (0.195; 1.068) a |
| Stearic acid (C18:0) | 0.039 (0.027; 0.092) a | 0.036 (0.018; 0.078) a |
| Arachinic acid (C20:0) | 0.019 (0.016; 0.038) a | 0.043 (0.032; 0.061) a |
| Geneicosanoic acid (C21:0) | 0.054 (0.032; 0.070) a | 0.222 (0.101; 0.347) b |
| Monounsaturated fatty acids (MUFA) | ||
| Myristoleic acid (cis-9 C14:1) | 0.001 (0.001; 0.001) a | 0.002 (0.002; 0.004) a |
| Pentadecenoic acid (cis-10 C15:1) | 0.002 (0.001; 0.003) a | 0.001 (0.001; 0.001) a |
| Palmitoleic acid (cis-9 C16:1) | 0.003 (0.002; 0.005) a | 0.013 (0.012; 0.014) a |
| Heptadecenoic acid (cis-10 C17:1) | 0.002 (0.002; 0.002) a | 0.004 (0.002; 0.013) a |
| Elaidic acid (trans-9 C18:1) | 0.001 (0.001; 0.005) a | 0.002 (0.002; 0.004) a |
| Oleic acid (cis-9 C18:1) | 0.015 (0.010; 0.019) a | 0.028 (0.013; 0.038) a |
| Eicosanoic acid (cis-11 C20:1) | BDL | 0.036 (0.025; 0.043) |
| Polyunsaturated fatty acids (PUFA) | ||
| Linoleic acid (trans-9,12, cis-9,12 C18:2n-6) | 0.048 (0.016; 0.069) a | 0.009 (0.003; 0.023) a |
| γ-linolenic acid (cis-6,9,12 C18:3n-6) | 0.006 (0.003; 0.028) a | 0.014 (0.013; 0.018) a |
| α-linolenic acid (cis-9,12,15 C18:3n-3) | 0.257 (0.101; 0.616) a | 0.169 (0.126; 0.175) a |
BDL, below detection level. Different characters (a, b) in lines indicate significant differences between HYP and CON (p < 0.05) according to the Mann–Whitney U test.