Table 2.
Effects of lesions to the cPAGl,vl (PAG-x) carried out prepartum (gestation day 15–17) or postpartum (day 7) on rat dams’ weight, body temperature, and behavior (means ± SEM) during a 60 or 45 min (respectively) interaction with pups
| Measure | Prepartum experiment: mean of days 1–6 | Postpartum experiment: mean of days 8–13 | ||||
|---|---|---|---|---|---|---|
| Sham | PAG-x | F(1,19) | Sham | PAG-x | F(1,19) | |
| Body weight (gm) | 341 ± 8 | 350 ± 8 | 0.59 | 337 ± 6 | 334 ± 5 | 0.13 |
| Body temperature (°C) | 38.5 ± 0.1 | 38.6 ± 0.8 | 0.14 | 38.6 ± 0.1 | 38.6 ± 0.1 | 0.001 |
| Latency (sec) | ||||||
| Hover over | 87 ± 3 | 149 ± 42 | 2.48 | 79 ± 8 | 107 ± 6 | 8.9* |
| Quiescence | 682 ± 72 | 1416 ± 84 | 44.12-160 | 461 ± 44 | 1013 ± 61 | 50.62-160 |
| Behavior duration (sec) | ||||||
| Mouth pups | 6.0 ± 1.0 | 5.8 ± 1.0 | 0.02 | 5.3 ± 1.1 | 9.9 ± 1.8 | 5.72* |
| Nest, burrow | 108 ± 22 | 67 ± 10 | 2.67 | 111 ± 28 | 41 ± 11 | 5.53* |
| Self-groom | 182 ± 18 | 181 ± 20 | 0.04 | 95 ± 27 | 93 ± 11 | 0.01 |
| Walk, rear | 160 ± 17 | 184 ± 37 | 0.38 | 108 ± 22 | 66 ± 12 | 2.22 |
| Hover over | 1283 ± 75 | 1536 ± 101 | 4.15† | 908 ± 79 | 934 ± 64 | 0.05 |
| All nursing | 1868 ± 102 | 1588 ± 107 | 3.58† | 1409 ± 129 | 1461 ± 85 | 0.08 |
| Over + nursing | 3151 ± 70 | 3124 ± 67 | 0.07 | 2317 ± 79 | 2396 ± 39 | 0.64 |
| Partial kyphosis | 96 ± 31 | 265 ± 76 | 4.61* | 3.8 ± 2.9 | 11.6 ± 5.5 | 1.34 |
ANOVA values of data from postpartum experiment include the presurgery baseline data (day 6).
†
p < 0.10;
*
p ≤ 0.05;
F2-160: p ≤ 0.001.