Skip to main content
. 2020 Aug 5;99(11):5681–5696. doi: 10.1016/j.psj.2020.07.010

Table 11.

Effect of grain drying temperature (T), particle size (P), and enzyme supplementation on nutrient ileal digestibility and energy utilization at 16 D for broilers raised in battery cages (Experiment 2).

Drying T (°C) Particle size1 Enzyme2 (g ton-1) Apparent ileal digestibility
 Total tract retention
DM CP Starch CP AMEn
-------(%)------- % kcal/kg DM
35 69.53 83.17 94.99 73.51 3,403
120 67.81 82.72 92.60 72.85 3,382
SEM 0.51 0.37 0.19 0.60 25
Coarse 68.11 82.93 93.74 72.64 3,373
Fine 69.23 82.96 93.85 73.72 3,412
SEM 0.51 0.37 0.19 0.59 25
0 69.86 83.44 94.03 71.70 3,294b
133 68.16 82.90 93.57 74.08 3,459a
266 67.98 82.50 93.79 73.76 3,424a
SEM 0.68 0.44 0.24 0.82 32
35 0 71.64 83.83 95.74a 72.80a,b 3,336
133 69.19 83.25 94.66a 75.51a 3,481
266 67.75 82.44 94.55a 72.23a,b 3,392
120 0 68.09 83.04 92.32b 70.60b 3,253
133 67.12 82.55 92.47b 72.66a,b 3,437
266 68.21 82.56 93.03b 75.29a 3,456
SEM 1.04 0.60 0.34 1.26 49
Coarse 0 69.43 83.23 93.94 72.25 3,290
133 66.95 82.44 93.43 72.63 3,425
266 67.95 83.11 93.84 73.04 3,402
Fine 0 70.30 83.65 94.11 71.15 3,299
133 69.37 83.35 93.71 75.53 3,493
266 68.01 81.88 93.74 74.48 3,446
SEM 1.04 0.60 0.34 1.26 49
35 Coarse 0 71.44 84.47a 95.66 74.87 3,369
133 67.50 82.43a,b,c 94.39 73.32 3,424
266 66.84 82.36a,b,c 94.51 72.02 3,391
Fine 0 71.85 83.20a,b,c 95.83 70.73 3,302
133 70.89 84.06a,b 94.94 77.70 3,539
266 68.65 82.52a,b,c 94.60 72.45 3,393
120 Coarse 0 67.42 81.99b,c 92.23 69.63 3,212
133 66.40 82.45a,b,c 92.46 71.95 3,427
266 69.06 83.87a,b 93.17 74.06 3,413
Fine 0 68.76 84.10a,b 92.40 71.57 3,295
133 67.85 82.65a,b,c 92.48 73.37 3,446
266 67.36 81.25c 92.88 76.52 3,500
SEM 1.52 0.82 0.49 1.86 71
Source of variation ----------P values----------
Drying T (°C) 0.061 0.328 <0.001 0.554 0.624
Particle size 0.221 0.944 0.689 0.335 0.343
Enzyme 0.185 0.259 0.421 0.176 0.005
T (°C) × Particle size 0.411 0.771 0.600 0.444 0.585
T (°C) × Enzyme 0.198 0.679 0.026 0.065 0.329
Particle size × Enzyme 0.555 0.145 0.857 0.344 0.850
T (°C) × Particle size × Enzyme 0.607 0.022 0.925 0.269 0.475

Means in a column not sharing a common superscript lowercase letter are significantly different (P < 0.05) by Student t or Tukey's test.

Values are means ± SEM of 8 pens per treatment combination with 3 male broiler chickens per pen.

1

Coarse corn (800–900 μm), and fine corn (400–500 μm).

2

Ronozyme HiStarch CT to supply 80 (133 g ton-1) and 160 (266 g ton-1) kilo-Novo alpha amylase units (KNU).