Levels of crude protein (%)

Item

10

13

16

SEM

p-Value

Growth performance traits

Initial weight (kg)

12.10

13.40

12.40

3.290

0.840

Final weight (kg)

78.37

84.60

82.33

7.732

0.487

Total gain (kg)

66.24

71.22

69.91

6.772

0.527

ADG (kg/day)

0.29

0.34

0.33

0.027

0.295

ADFI intake (kg/day)

1.40

1.43

1.50

0.069

0.440

FCR

4.44

4.20

4.38

0.316

0.529

Back fat thickness (cm)

18.20

18.75

18.00

1.110

0.603

Age at puberty (day)

157.20

153.84

154.42

4.812

0.526

Weight at puberty (kg)

44.23

41.17

43.80

6.063

0.717