From: Seasonal variation in body mass and energy budget in Chinese bulbuls (pycnonotus sinensis)
Category | Spring | Summer | Autumn | Winter | p value |
---|---|---|---|---|---|
Sample size (n) | 23 | 23 | 24 | 18 | Â |
Body masses (g) | 30.2 ± 0.4b | 27.9 ± 0.4a | 27.47 ± 0.8a | 30.8 ± 0.5b | <0.001 |
Body temperature (°C) | 41.3 ± 0.1b | 41.3 ± 0.2b | 41.6 ± 0.6b | 40.8 ± 0.2a | <0.05 |
Carcass wet mass (g) | 18.36 ± 0.50b | 16.55 ± 0.33a | 18.42 ± 0.66b | 22.04 ± 0.35c | <0.001 |
Carcass dry mass (g) | 5.72 ± 0.15b | 4.81 ± 0.14a | 5.65 ± 0.21b | 6.89 ± 0.18c | <0.001 |
Body fat mass (g) | 1.77 ± 0.08ab | 1.58 ± 0.08a | 1.91 ± 0.08b | 2.23 ± 0.09c | <0.001 |
Body fat content (%) | 6.12 ± 0.31ab | 5.46 ± 0.30a | 6.66 ± 0.01b | 7.61 ± 0.32c | <0.001 |
Body water content (%) | 76.26 ± 0.77 | 78.42 ± 0.77 | 77.53 ± 0.77 | 76.54 ± 0.89 | >0.05 |
GEI (kJ/day) | 183.93 ± 12.83b | 139.19 ± 8.13a | 151.72 ± 11.00a | 226.51 ± 13.35c | <0.001 |
FE (kJ/day) | 92.47 ± 8.74bc | 60.48 ± 4.58a | 74.78 ± 6.58ab | 108.80 ± 8.67c | <0.001 |
DEI (kJ/day) | 91.46 ± 8.36a | 78.71 ± 5.28a | 76.94 ± 6.71a | 117.70 ± 8.79b | <0.01 |
Digestibility (%) | 50.49 ± 2.86 | 56.44 ± 2.33 | 50.74 ± 2.17 | 52.03 ± 2.63 | >0.05 |