Table 4.
OPLS-DA coefficients derived from the NMR data of metabolites in plasma obtained from different treatments
| Metabolite | Correlation coefficienta | ||
|---|---|---|---|
| CON-d7 (vs CON-d0) | DLM-d7 (vs DLM-d0) | HMTBA-d7 (vs HMTBA-d0) | |
| 3-Hydroxybutyrate | - | 0.884 | - |
| Acetamide | 0.856 | 0.796 | 0.824 |
| Alanine | −0.792 | - | - |
| Allantoin | - | −0.757 | - |
| Asparagine | - | −0.899 | - |
| Betaine | - | −0.831 | - |
| Choline | 0.816 | - | - |
| Creatinine | −0.902 | −0.913 | - |
| Dimethylamine | - | 0.787 | 0.843 |
| Glycerol | - | −0.842 | - |
| Glycerophosphocholine | - | 0.851 | - |
| Lipid, CH 3-(CH2)n-(LDL) | 0.892 | 0.915 | - |
| Lipid, CH 3-(CH2)n-(VLDL) | - | 0.859 | - |
| Lipid, CH3-(CH 2)n-(LDL) | - | 0.837 | - |
| Lipid, =CH-CH 2-CH= | - | 0.825 | - |
| Lipid, −CH = CH- | - | 0.886 | - |
| Lysine | - | −0.822 | - |
| myo-Inositol | - | −0.874 | - |
| Phenylalanine | −0.780 | - | - |
| Succinate | - | −0.785 | - |
| Valine | - | 0.894 | - |
| α-Glucose | - | −0.888 | - |
| β-Glucose | - | −0.853 | - |
aCorrelation coefficients (r), positive and negative signs indicate positive and negative correlation in the concentrations, respectively. The correlation coefficient of│r│ > 0.755 was used as the cutoff value for the statistical significance based on the discrimination significance at the level of P = 0.05 and df (degree of freedom) = 5. “-” means the correlation coefficient│r│ is less than 0.755. The plasma sample at postpartum d0 of sows fed the control diet (CON-d0), the plasma sample at postpartum d7 of sows fed the DL-methionine diet (CON-d7), the plasma sample at postpartum d0 of sows fed the DL-methionine diet (DLM-d0), the plasma sample at postpartum d7 of sows fed the DL-methionine diet (DLM-d7), the plasma sample at postpartum d0 of sows fed the DL-2-hydroxy-4-methylthiobutanoic acid diet (HMTBA-d0), the plasma sample at postpartum d7 of sows fed DL-2-hydroxy-4-methylthiobutanoic acid diet (HMTBA-d7), low density lipoprotein (LDL), very low density lipoprotein (VLDL)