Table 2.
Body and interscapular brown adipose tissue (BAT) weights, lipid droplet size, lipid peroxidation (TBARS), and food intake in the bank voles raised under long (LP) and short (SP) photoperiod
| Age of animals (weeks) | Photoperiod exposure time (weeks) | Body weight (g) | BAT weight (mg) | Lipid droplet size (μm2) | TBARS (nmol/g) | Food intake (g/vole/day) |
|---|---|---|---|---|---|---|
| 12 | LP-12 | 24.5 ± 5.6a | 177 ± 86a | 107.1 ± 7.8a | 242 (176–451)a | 3.14 ± 0.25a |
| 15 | LP-15 | 25.0 ± 3.0a | 245 ± 84a | 128.3 ± 35.6a | 41 (30–107)b | 3.23 ± 0.59a |
| 18 | LP-18 | 26.6 ± 1.9a | 220 ± 73a | 266.1 ± 46.0b | 51 (34 – 86)b | 3.29 ± 0.51a |
| 15 | SP-3 | 21.2 ± 4.2ab | 136 ± 128a | 24.5 ± 20.2c | 163 (118–656)a | 3.28 ± 0.66a |
| 18 | SP-6 | 18.6 ± 2.0b | 54 ± 17b | 8.3 ± 3.0c | 131 (40–216)a | 2.70 ± 0.39b |
Values represent means ± SD for n = 6 (body and BAT weights, lipid droplet size, food intake) or median and min-max values (TBARS). Values in the same column marked with different superscript letters are significantly different (p < 0.05). All bank voles were housed under long photoperiod from the birth. After 12 weeks a part of them was transferred to short photoperiod (SP), the remaining ones were housed under long photoperiod (LP) to the end of experiment