Skip to main content

Advertisement

Table 6 Effects of dietary energy and protein levels on nutrient digestibility and nitrogen retention in growing · finishing pigs1

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 Treatments3 SEM2 P-value
ME 3,265 ME 3,365 CON P4(P5) LP5 E P E×P
Nutrient digestibility, %
 Dry matter 90.33 90.44 90.63 90.21 90.31 0.233 0.84 0.79 0.78
 Crude protein 87.60 87.53 88.70 87.20 86.80 0.409 0.99 0.19 0.46
 Crude ash 60.52 59.35 59.55 58.19 62.06 1.078 0.61 0.38 0.64
 Crude fat 71.00B 76.80A 77.45 71.94 72.33 1.358 0.02 0.12 0.28
N-retention, g/d
 N-intake 116.99 117.37 127.04 114.70 109.82 1.832    
 N-feces 14.43 14.53 14.35 14.69 14.40 0.460 0.93 0.96 0.48
 N-urine 71.25 70.69 81.55A 71.69A 59.68B 2.628 0.89 0.01 0.58
 N-retention4 31.31 32.16 31.14 28.32 35.75 2.175 0.82 0.26 0.65
 N-retention5, % 27.02 27.49 24.51b 24.68ab 32.57a 1.747 0.88 0.08 0.67
  1. 1A total of 24 barrow and initial body weight 49.37 ± 2.97 kg
  2. 2CON: CP 18.0 %, P4(P5): CP 16.3 %, LP5: CP 15.6 %
  3. 3Standard error of mean
  4. 4N retention = N intake (g) - Fecal N (g) - Urinary N (g)
  5. 5N retention (%) = N retention/N intake × 100
  6. AB means with different superscripts in the same row significantly differ (P < 0.05)
  7. abmeans with different superscripts in the same row significantly differ (0.05 ≤ P < 0.10)