Table 7.
Effect of dietary leucine supplementation on the concentration of amino acids on day −1 and day 7 of pregnancy in SD rats.
| Amino acid (ug/ml) | Control | Leucine | P value |
|---|---|---|---|
| Day −1 of pregnancy | |||
| Cysteine | 0.58 ± 0.14 | 0.41 ± 0.14 | 0.882 |
| Phenylalanine | 11.21 ± 0.49 | 13.17 ± 0.89 | 0.095 |
| Alanine | 32.99 ± 1.76 | 45.95 ± 3.88∗ | 0.027 |
| Glycine | 16.80 ± 1.52 | 21.06 ± 1.97 | 0.453 |
| Glutamic acid | 17.10 ± 0.73 | 21.54 ± 1.17 | 0.169 |
| Glutamine | 84.80 ± 4.82 | 89.30 ± 2.16∗ | 0.025 |
| Methionine | 5.60 ± 0.30 | 6.97 ± 0.46 | 0.217 |
| Arginine | 22.36 ± 1.94 | 24.51 ± 0.79∗ | 0.013 |
| Lysine | 106.49 ± 8.11 | 97.99 ± 5.88 | 0.353 |
| Tyrosine | 11.08 ± 1.03 | 12.10 ± 0.75 | 0.358 |
| Leucine | 15.89 ± 0.60 | 20.25 ± 1.42∗ | 0.017 |
| Proline | 15.24 ± 0.80 | 19.04 ± 0.86 | 0.810 |
| Tryptophan | 17.06 ± 0.77 | 19.62 ± 1.02 | 0.415 |
| Serine | 19.66 ± 1.26 | 23.99 ± 1.23 | 0.951 |
| Threonine | 30.58 ± 2.88 | 34.45 ± 2.90 | 0.981 |
| Aspartic acid | 0.54 ± 0.04 | 0.83 ± 0.15∗∗ | ≪0.001 |
| Asparagine | 6.91 ± 0.47 | 8.73 ± 0.41 | 0.728 |
| Valine | 18.79 ± 0.97 | 22.89 ± 1.27 | 0.427 |
| Isoleucine | 11.36 ± 0.47 | 14.09 ± 0.94 | 0.052 |
| Histidine | 6.87 ± 0.43 | 8.47 ± 0.74 | 0.118 |
| Day 7 of pregnancy | |||
| Cysteine | 0.24 ± 0.06 | 0.35 ± 0.05 | 0.827 |
| Phenylalanine | 11.57 ± 0.52 | 11.85 ± 0.53 | 0.861 |
| Alanine | 40.13 ± 2.45 | 40.26 ± 1.21 | 0.091 |
| Glycine | 20.24 ± 1.14 | 20.10 ± 1.13 | 0.891 |
| Glutamic acid | 16.68 ± 1.06 | 16.88 ± 0.77 | 0.485 |
| Glutamine | 77.50 ± 3.62 | 75.84 ± 2.04 | 0.174 |
| Methionine | 7.04 ± 0.23 | 7.13 ± 0.12 | 0.090 |
| Arginine | 20.77 ± 0.60 | 23.81 ± 0.81 | 0.358 |
| Lysine | 79.78 ± 12.21 | 108.21 ± 7.97 | 0.325 |
| Tyrosine | 10.34 ± 0.62 | 11.56 ± 0.74 | 0.549 |
| Leucine | 18.44 ± 0.88 | 19.97 ± 0.58 | 0.347 |
| Proline | 17.47 ± 0.63 | 17.40 ± 0.58 | 0.919 |
| Tryptophan | 18.98 ± 1.11 | 16.65 ± 0.54 | 0.086 |
| Serine | 21.26 ± 0.96 | 20.75 ± 0.65 | 0.374 |
| Threonine | 33.12 ± 2.70 | 30.72 ± 1.40 | 0.116 |
| Aspartic acid | 0.71 ± 0.09 | 0.67 ± 0.03∗ | 0.019 |
| Asparagine | 7.31 ± 0.36 | 7.52 ± 0.35 | 0.917 |
| Valine | 21.84 ± 0.94 | 24.45 ± 0.90 | 0.968 |
| Isoleucine | 13.01 ± 0.67 | 13.93 ± 0.60 | 0.858 |
| Histidine | 7.89 ± 0.52 | 7.90 ± 0.30 | 0.185 |
Value is the mean ± standard error of means of eight replicates; ∗ is means labeled with significant difference (P < 0.05); ∗∗ is means labeled with extreme difference (P < 0.01).