Table 2 Least square means of the impact of decreasing energy intake through feed restriction on barrow and gilt performance from 25 to 120 kg

Initial wt., kg

24.7

24.7

24.7

24.7

24.7

Final wt., kg

120.0

118.9

118.7

119.0

119.6

0.2

0.320

0.107

0.001

Daily gain, kg/d

1.00

0.92

0.76

0.78

0.66

0.01

0.001

0.001

0.952

Daily feed, kg/d

2.64

2.44

2.25

2.06

1.87

0.02

0.001

0.001

0.829

Feed conversion

0.40

0.40

0.40

0.41

0.38

0.01

0.046

0.169

0.033

Loin, mm

61.6

55.6

55.3

57.1

57.1

0.6

0.047

0.824

0.409

Backfat, mm

16.7

14.8

13.5

12.7

12.3

0.3

0.001

0.001

0.832

Daily DE intake, Mcal/d

8.67

8.01

7.41

6.77

6.15

Protein accretion, g/d

145.6

135.8

140.8

131.8

112.9

6.3

0.014

0.012

0.184

Lipid accretion, g/d

294.8

246.6

213.6

183.3

144.2

9.7

0.001

0.001

0.874

Ash accretion, g/d

27.1

26.7

28.6

23.2

19.3

1.8

0.010

0.005

0.085

Lipid:protein ratio

2.05

1.89

1.57

1.43

1.30

0.12

0.001

0.001

0.746

Ash:protein ratio

0.10

0.11

0.14

0.13

0.14

0.01

0.086

0.002

0.737