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Table 1 Seasonal variations in body mass, body composition and energy budgets in Chinese Bulbuls

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

 

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

  1. Data are presented as mean ± SE, bold indicated statistical differences. The different superscripts in the same row indicate significant differences.