Table 5.
Effect of dietary leucine supplementation on plasma hormones in primiparous SD rats.
| Items | Control | 0.6% leucine | P value |
|---|---|---|---|
| Day −1 of pregnancy | |||
| Insulin (uIU/mL) | 18.44 ± 2.95∗ | 14.82 ± 1.25 | 0.017 |
| IGF-1 (ng/mL) | 157.90 ± 10.73 | 206.43 ± 33.99∗∗ | ≪0.01 |
| Estradiol (pg/mL) | 9.95 ± 0.97 | 10.76 ± 2.12∗ | 0.040 |
| Progesterone (pg/mL) | 406.24 ± 0.02 | 431.58 ± 0.01 | 0.493 |
| LH (uIU/mL) | 5.32 ± 0.10 | 5.87 ± 0.21∗ | 0.038 |
| FSH (uIU/mL) | 4.78 ± 0.99 | 6.37 ± 1.22 | 0.542 |
| Day 7 of pregnancy | |||
| Insulin (uIU/mL) | 26.04 ± 1.79 | 16.40 ± 1.84 | 0.937 |
| IGF-1 (ng/mL) | 139.40 ± 8.39 | 229.70 ± 26.39∗∗ | ≪0.01 |
| Estradiol (pg/mL) | 5.91 ± 0.44 | 7.22 ± 1.35∗∗ | ≪0.01 |
| Progesterone (pg/mL) | 396.20 ± 0.01 | 412.97 ± 0.02∗ | 0.015 |
| LH (uIU/mL) | 5.14 ± 0.19 | 6.08 ± 0.13 | 0.369 |
| FSH (uIU/mL) | 6.84 ± 0.96 | 7.34 ± 1.44 | 0.305 |
| Day 20 of pregnancy | |||
| Insulin (uIU/mL) | 22.47 ± 1.70 | 15.63 ± 1.42 | 0.617 |
| IGF-1 (ng/mL) | 195.43 ± 13.64 | 252.33 ± 30.15∗ | 0.038 |
| Estradiol (pg/mL) | 39.83 ± 3.17 | 43.12 ± 7.21∗ | 0.032 |
| Progesterone (pg/mL) | 429.65 ± 0.01 | 412.68 ± 0.02 | 0.424 |
| LH (uIU/mL) | 5.30 ± 0.28 | 5.60 ± 0.32 | 0.671 |
| FSH (uIU/mL) | 11.01 ± 1.16 | 4.67 ± 0.55∗ | 0.049 |
Value is the mean ± standard error of means of ten replicates; ∗ is means labeled with significant difference (P < 0.05); ∗∗ is means labeled with extreme difference (P < 0.01).