Table 5.
Effects of Ucn 2 on the rate and regularity of food pellet consumption within meals
| Statistical parameter for inter–pellet interval | DR | DIO |
|---|---|---|
| Mean | ||
| ANOVA | — | ## |
| Linear contrast | — | ††† |
| 0 μg | 2.50 (12.18) ± 0.07 | 2.34 (10.38) ± 0.07 |
| 0.3 μg | 2.54 12.68) ± 0.08 | 2.35 (10.49) ± 0.09 |
| 1 μg | 2.56 (12.94) ± 0.08 | 2.47 (11.82) ± 0.10 |
| 3 μg | 2.58 (13.20) ± 0.06 | 2.59 (13.33) ± 0.12* |
| Standard deviation | ||
| ANOVA | — | — |
| Linear contrast | — | † |
| 0 μg | 0.35 ± 0.02 | 0.42 ± 0.02 |
| 0.3 μg | 0.36 ± 0.02 | 0.41 ± 0.03 |
| 1 μg | 0.37 ± 0.02 | 0.45 ± 0.03 |
| 3 μg | 0.39 ± 0.03 | 0.56 ± 0.07 |
| Kurtosis | ||
| ANOVA | — | — |
| Linear contrast | — | — |
| 0 μg | 5.20 ± 1.88 | 9.31 ± 1.84 |
| 0.3 μg | 7.72 ± 2.62 | 10.63 ± 2.58 |
| 1 μg | 4.54 ± 1.50 | 7.27 ± 1.88 |
| 3 μg | 3.86 ± 0.79 | 5.72 ± 2.02 |
| Entropy | ||
| ANOVA | # | ## |
| Linear contrast | †† | †† |
| 0 μg | 0.34 ± 0.01 | 0.34 ± 0.01 |
| 0.3 μg | 0.37 ± 0.01 | 0.35 ± 0.02 |
| 1 μg | 0.38 ± 0.02 | 0.40 ± 0.02 |
| 3 μg | 0.40 ± 0.01* | 0.47 ± 0.05** |
Effect of third ventricle Ucn 2 treatment on the rate and regularity of eating within meals in genetically selected diet-induced obesity-resistant (DR) and susceptible (DIO) rats. Statistical parameters (expressed as mean ± s.e.m.) describe the log-normal distribution of consecutive, nocturnal, within-meal interfeeding intervals (IFIs) of adult male DR (n = 9) and DIO (n = 8) rats during the first 7 h of the dark cycle following central Ucn 2 pretreatment. Parameters were calculated from the ln-transformed duration of interfeeding interval durations. Therefore, the mean and s.e.m. are expressed in ln (s) units; the parenthetical value for the ‘Mean’ parameter represents the back-transformed average (s) to facilitate interpretation. For entropy analysis, histograms were constructed from log-transformed IFI that fell from e1.66 to e5.66 s (∼5.26–287.15 s), with a bin width of e0.2. Symbols denote significant differences:
P < 0.05
P < 0.01 from the respective vehicle condition (within-subject Newman–Keuls test)
P < 0.05
P < 0.01 denote a significant dose effect of Ucn 2 (ANOVA)
P < 0.05
P < 0.01 denote a significant log-linear, dose-dependent effect of Ucn 2 (Linear contrast ANOVA).