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. 2018 May 12;96(8):3249–3263. doi: 10.1093/jas/sky184

Table 9.

Effects of standardized ileal digestible (SID) lysine (Lys) and duration of feeding Cu on growth performance of finishing pigs, Exp. 21

SID Lys,2 % 92.5 100.0
Early added Cu3: − + − + − + − +
Late added Cu4: − − + + − − + + Probability, 5P <
Treatment: A B C D E F G H SEM Cu × SID Lys6 Cu7 SID Lys8
Weight, kg
 Day 0 26.4 26.4 26.4 26.4 26.4 26.4 26.4 26.4 0.662 0.913 0.998 0.987
 Day 60 78.1 78.5 78.2 78.3 79.1 79.7 79.1 79.5 1.002 0.833 0.567 0.031
 Day 120 129.4 129.8 130.8 129.2 132.3 132.4 132.1 133.4 1.202 0.428 0.527 0.001
Day 0 to 60
 ADG, kg 0.86 0.86 0.86 0.86 0.88 0.88 0.87 0.88 0.009 0.463 0.681 0.018
 ADFI, kg 2.08 2.12 2.06 2.05 2.05 2.06 2.08 2.12 0.031 0.023 0.391 0.461
 G:F 0.413 0.408 0.416 0.418 0.427 0.429 0.418 0.418 0.005 0.098 0.592 0.109
Day 60 to 120
 ADG, kg 0.90 0.92 0.92 0.90 0.93 0.93 0.94 0.93 0.010 0.951 0.931 0.007
 ADFI, kg 2.77 2.78 2.77 2.79 2.82 2.75 2.83 2.78 0.025 0.283 0.576 0.326
 G:F 0.326 0.329 0.332 0.325 0.331 0.337 0.333 0.336 0.004 0.338 0.591 0.032
Day 0 to 120
 ADG, kg 0.88 0.89 0.89 0.88 0.90 0.91 0.90 0.91 0.007 0.566 0.732 0.001
 ADFI, kg 2.42 2.43 2.40 2.40 2.42 2.39 2.44 2.44 0.022 0.365 0.900 0.235
 G:F 0.365 0.365 0.369 0.366 0.373 0.378 0.371 0.373 0.003 0.735 0.870 0.009
Caloric efficiency9
 ME 9.13 9.13 9.02 9.10 8.93 8.81 8.98 8.93 0.067 0.754 0.832 0.007
 NE 6.83 6.83 6.74 6.80 6.64 6.55 6.68 6.65 0.050 0.740 0.829 0.001

1A total of 1,267 pigs (PIC 337 × 1,050 PIC, Hendersonville, TN; initially 26.4 kg) were used in a 120 d study; six pens per treatment and 26 to 27 pigs per pen.

2SID Lys values are expressed as the percentage of estimated SID Lys requirement for these pigs in this environment and production stage.

3150 mg/kg copper from tribasic copper chloride (TBCC; Intellibond C; Micronutrients, Inc.) fed from day 0 to 60.

4150 mg/kg copper from TBCC fed from day 60 to 120.

5No Early Cu × Late Cu × SID Lys, Early Cu × SID Ly, Late Cu × SID Lys, or Early Cu × Late Cu interactions, or early Cu vs. late Cu main effects, were observed.

6Contrast between Treatments A and H vs. D and E.

7Contrast between Treatments A and E vs. D and H.

8Contrast between Treatments A and D vs. E and H.

9Caloric efficiencies were calculated by the following equation: sum of (ADFI × Mcal) ÷ (ADG) for each period.