Table 6 Growth performance and backfat thickness of pigs fed diets with low CP formulation (Exp. 2)

BW, kg

 Initial

34.2

34.2

34.3

4.2

0.988

 d 7

39.6

40.2

39.9

4.7

0.715

 d 14

47.5

49.6

48.5

4.8

0.866

 d 21

53.8

55.0

54.1

5.3

0.872

ADG, kg/d

 d 0 to 7

0.78

0.85

0.81

0.08

0.363

 d 7 to 14

1.06

1.10

1.04

0.08

0.687

 d 14 to 21

0.97

1.02

0.99

0.11

0.819

 d 0 to 21

0.94

0.99

0.94

0.06

0.588

ADFI, kg/d

 d 0 to 7

1.91

1.92

2.05

0.21

0.423

 d 7 to 14

2.15

2.26

2.31

0.15

0.331

 d 14 to 21

2.40

2.57

2.60

0.17

0.278

 d 0 to 21

2.15

2.25

2.32

0.17

0.320

 G/F

 d 0 to 7

0.41

0.44

0.40

0.02

0.169

 d 7 to 14

0.50^A

0.49^AB

0.45^B

0.03

0.071

 d 14 to 21

0.40

0.40

0.38

0.04

0.672

 d 0 to 21

0.43^a

0.44^a

0.41^b

0.02

0.015

Backfat thickness, mm

 d 21

5.08^b

6.04^a

6.29^a

0.64

0.021