Table 7.
Female sexual maturation of rats fed synthetic diets (experiment 9).
| Treatment | Body weight at PND21 (g) | Body weight at PND41 (g) | Cumulative energy intake at VOa (kJ) | Age at VO (PND) | Body weight at VO (g) | No. |
|---|---|---|---|---|---|---|
| RM1 | 40.9 ± 4.0 | 137.5 ± 11.9 | 2,404 ± 108 | 36.1 ± 1.7 | 114.2 ± 9.1 | 20 |
| Diet B | 38.3 ± 4.2 | 147.8 ± 5.4** | 2,214 ± 151 | 34.8 ± 1.5* | 117.2 ± 9.9 | 20 |
| Diet D | 43.5 ± 4.1** | 166.1 ± 10.6** | 2,281 ± 208 | 30.9 ± 1.0**,# | 105.1 ± 8.5**, # | 20 |
| RM1/DES 30 μg/L | 39.7 ± 3.0 | 127.1 ± 12.8** | 479 ± 58** | 24.9 ± 0.7** | 55.7 ± 7.4** | 10 |
Values are mean ± SD. DES was administered in the drinking water.
a
Total energy intake was calculated from the amount of food (and the MEs of the diets) consumed per rat up to VO.
*p < 0.05,
**p < 0.01 compared with RM1 control.
#
p < 0.01 for age and body weight at VO for diets D and B; there were no statistically significant differences in energy intake at VO between RM1 and diets B and D when either RM1 or diet B was used as the control.