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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

From: A review of feed efficiency in swine: biology and application

Item Percent of ad libitum SEM P-values
  100 93 86 79 72   Treatment Linear Quadratic
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
  1. Source: [27]