Age (d)

Feathers² (% DM)

Feather-free body (% DM)

Empty body³ (% DM)

Male

Female

Male

Female

Male

Female

1

(100.2)

(102.4)

71.2

70.4

74.5

73.3

8

(100.7)

98.5

67.7

62.5

69.2

64.1

15

95.8

96.8

65.2

61.5

66.3

63.4

22

97.7

97.0

65.4

60.5

67.0

62.5

29

98.6

98.2

63.4

58.8

65.2

61.3

36⁴

99.3

99.0

64.0

56.3

66.2

59.5

Mean

98.7

98.7

66.2

61.7

68.1

64.0

SD

2.2

2.0

3.2

4.6

3.6

4.6

Significance levels (p) of two-way ANOVA

Age (A)

<0.001

<0.001

<0.001

Gender (G)

=0.886

<0.001

<0.001

A × G

=0.106

=0.026

=0.066