Age (d)

Empty body² (%)

Feather-free body (%)

Feathers³ (%)

Feather DM (% of empty body DM)

Male

Female

Male

Female

Male

Female

Male

Female

1

8

15

22

29

36⁴

21.43

25.38

27.20

28.64

30.28

30.62

21.37

26.15

29.08

30.21

32.10

33.46

19.62

24.70

26.86

28.16

29.69

29.79

20.02

25.62

28.56

29.68

31.33

32.31

76.78

56.72

40.85

42.39

47.34

52.07

65.98

45.74

43.62

43.81

50.39

60.38

11.32

4.67

3.70

5.00

5.20

6.30

9.09

4.57

5.13

5.40

6.41

7.41

Mean

SD⁵

27.98

2.64

29.65

3.38

27.33

2.82

28.91

3.35

49.68

9.44

49.86

7.86

5.37

1.86

5.99

1.32

ANOVA significance levels (p)

Age (A)

Gender (G)

A x G

<0.001

<0.001

=0.004

<0.001

<0.001

=0.074

<0.001

=0.205

<0.001

<0.001

=0.094

=0.001