Table 3. Effect of reducing SID Lys: NE ratios on growth performance in finishing pigs (phase 2)

Items CON TRT1 TRT2 SE
Initial BW (kg) 54.311) 54.19 53.99 1.42
42 d BW (kg) 88.12 87.58 86.96 1.28
Final BW (kg) 119.06 118.35 117.80 1.13
0–42 day
 ADG (g) 805 795 785 33
 ADFI (g) 2,120 2,202 2,131 71
 G:F ratio 0.380 0.361 0.368 0.011
42–77 day
 ADG (g) 884 879 881 37
 ADFI (g) 2,732 2,676 2,652 98
 G:F ratio 0.324 0.328 0.332 0.019
0–77 day
 ADG (g) 841 833 829 26
 ADFI (g) 2,398 2,418 2,368 65
 G:F ratio 0.351 0.345 0.350 0.011
Each mean represents 4 pens with 6 pigs each per treatment. CON (CP: 17.0%, SID Lys: 0.84%, NE: 10.38 MJ/kg, SID Lys: NE: 0.79 g/MJ); TRT1 (CP: 15.8%, SID Lys: 0.80%, NE: 10.38 MJ/kg, SID Lys: NE: 0.75 g/MJ); TRT2 (CP: 14.8%, SID Lys: 0.70%, NE: 10.38 MJ/kg, SID Lys: NE: 0.65 g/MJ).
SE, standard error; BW, body weights; ADG, average daily gain; ADFI, average daily feed intake; G:F, gain to feed; CP, crude protein; SID Lys, standardized ileal digestible lysine; NE, net energy.