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Table 6 Effect of dietary increasing SID-Lys:ME ratio on performance of growing-finishing pigs (Experiments 4, 5 and 6)1

From: Effects of the standardized ileal digestible lysine to metabolizable energy ratio on performance and carcass characteristics of growing-finishing pigs

Item SID-Lys:ME ratio, g/Mcal SEM P value
        ANOVA Linear Quadratic
Experiment 4 (29 to 47 kg) 2.4 2.6 2.8 3.0 3.2     
   Weight gain, kg/d 0.62a 0.64ab 0.64ab 0.68b 0.66b 0.01 0.04 0.09 0.22
   Feed intake, kg/d 1.85 1.80 1.76 1.74 1.73 0.06 0.66 0.34 0.61
   Feed efficiency 0.34 0.36 0.37 0.39 0.38 0.02 0.24 0.04 0.09
Experiment 5 (54 to 76 kg) 2.1 2.3 2.5 2.7 2.9     
   Weight gain, kg/d 0.73a 0.77b 0.80b 0.80b 0.79b 0.01 < 0.01 0.01 0.01
   Feed intake, g/d 2.44 2.44 2.38 2.35 2.34 0.08 0.86 0.49 0.79
   Feed efficiency 0.30 0.32 0.34 0.34 0.34 0.01 0.16 0.05 0.10
Experiment 6 (84 to 109 kg) 1.8 2.0 2.2 2.4 2.6     
   Weight gain, kg/d 0.79ab 0.76a 0.88c 0.86c 0.84bc 0.03 < 0.01 0.03 0.06
   Feed intake, kg/d 3.26 3.20 3.34 3.35 3.15 0.10 0.24 0.86 0.57
   Feed efficiency 0.24 0.24 0.26 0.26 0.27 0.01 0.07 0.02 0.08
  1. a-cMeans in the same row with different superscripts are significantly different (P < 0.05).
  2. 1Value represent means of six pens with 11 to 15 pigs per pen during a 28-d period.