Table 1.
Baseline differences in prandial intake of genetically selected DR and DIO rats
| Parameter | Dark phase | Light phase | 23 h | |||
|---|---|---|---|---|---|---|
| DR | DIO | DR | DIO | DR | DIO | |
| Feeding | ||||||
| Intake (g) | 19.4 ± 1.1 | 20.1 ± 0.6 | 4.5 ± 0.5 | 4.4 ± 0.5 | 24.0 ± 1.3 | 24.5 ± 0.9 |
| Duration (min) | 85.4 ± 8.8 | 77.0 ± 6.9 | 21.6 ± 3.4 | 16.9 ± 1.6 | 106.9 ± 11.8 | 93.9 ± 7.4 |
| Drinking | ||||||
| Intake (ml) | 19.5 ± 2.3 | 21.2 ± 2.0 | 4.7 ± 1.0 | 3.1 ± 0.5 | 24.2 ± 3.3 | 25.0 ± 2.2 |
| Duration (min) | 35.5 ± 4.1 | 72.0 ± 10.0** | 10.7 ± 1.5 | 9.2 ± 1.3 | 46.3 ± 4.2 | 81.2 ± 10.2** |
Spontaneous prandial feeding and drinking of genetically selected diet-induced obesity-resistant (DR) and susceptible (DIO) rats. Data express the mean ± s.e.m. quantity or duration of food and water intake within meals of male DR (n = 9) and DIO (n = 8) rats during the dark cycle, light cycle or 23 h period and were calculated from the average of two consecutive 23 h sampling periods measured at 77–78 days of age.
**
P < 0.01 compared to DR rats (Student's t test).