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.