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Table 8 Effects of dietary energy and protein levels on economical efficiency

From: Effect of dietary energy levels and phase feeding by protein levels on growth performance, blood profiles and carcass characteristics in growing-finishing pigs

Criteria Treatments SEM2 P-value
ME 3,265 ME 3,365 CON P4 P5 LP5 E P E×P
Feed cost per weight gain, won/kg
 0-3 weeks 778B 870A 851 847 831 768 17.2 0.01 0.33 0.63
 3-6 weeks 988 1,049 1,029 1,010 1,048 985 19.1 0.15 0.75 0.66
 6-9 weeks 1,035B 1,202A 1,124 1,120 1,180 1,050 41.1 0.02 0.60 0.34
 9-12 weeks 1,119 1,186 1,166 1,188 1,172 1,083 32.4 0.51 0.62 0.63
 12-13 weeks 1,110 1,177 1,318 1,136 998 1,121 54.2 0.98 0.14 0.38
 0-13 weeks 5,029B 5,484A 5,489 5,302 5,230 5,006 88.8 0.02 0.17 0.33
Total feed cost per pig, won/head
 0-3 weeks 13,640 14,912 14,438 13,830 15,107 13,729 383.7 0.11 0.58 0.68
 3-6 weeks 17,642 18,659 18,992 17,439 18,833 17,339 431.6 0.27 0.43 0.94
 6-9 weeks 20,343B 22,140A 22,286 20,744 21,280 20,655 432.2 0.04 0.54 0.98
 9-12 weeks 22,143B 24,288A 23,438 23,454 23,875 22,096 386.5 0.01 0.27 0.27
 12-13 weeks 7,663B 9,151A 8,431 8,762 8,232 8,204 186.6 0.01 0.47 0.80
 0-13 weeks 81,431B 89,150A 87,585 84,230 87,326 82,023 1469.7 0.01 0.55 0.92
Days to market weight (Day, reached 120 kg BW)
  105.5 102.4 106.8 103.9 102.2 102.9 1.60 0.36 0.77 0.40
 Carcass yield and price
 Carcass yield, % 76.7 76.7 77.2 76.0 76.2 77.4 0.270 0.95 0.23 0.99
 Carcass price, 1,000 won 377.6a 368.4b 368.3 376.2 365.6 381.8 2.641 0.08 0.12 0.90
  1. 1Standard error of mean
  2. ABmeans with different superscripts in the same row significantly differ (P < 0.05)
  3. abmeans with different superscripts in the same row significantly differ (0.05 ≤ P < 0.10)