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

Table 8.

Effect of corn drying temperature (T), particle size (P), and enzyme supplementation on live performance of Cobb 500 male broilers at 14 D raised in battery cages (Experiment 2).

Drying T (°C) Particle size1 Enzyme2 (g ton-1) BW
 BW
 BWG
 Feed intake
 FCR3
0 D 0–14 D 0–14 D 0–14 D 0–14 D
--------(g)-------- -(g:g)-
35 43.3 465 422 497 1.174
120 43.3 462 419 490 1.168
SEM 0.9 4 4 3 0.005
Coarse 43.2 458 415 493 1.188
Fine 43.3 470 426 493 1.154
SEM 0.9 4 4 3 0.005
0 43.4 463 419 496a 1.189a
133 43.2 465 422 500a 1.176a
266 43.3 463 420 484b 1.148b
SEM 0.9 4 4 3 0.006
35 Coarse 43.3 459 416 498 1.193
Fine 43.4 471 428 496 1.156
120 Coarse 43.2 457 413 489 1.182
Fine 43.3 468 424 491 1.153
SEM 0.9 5 5 4 0.006
35 0 43.5 460 416 500 1.205a
133 43.2 467 424 502 1.176b
266 43.3 469 426 488 1.142d
120 0 43.2 466 423 492 1.173b,c
133 43.2 463 420 499 1.177b
266 43.4 458 414 479 1.154c,d
SEM 0.9 6 6 5 0.008
Coarse 0 43.4 457 414 500a 1.211
133 43.1 463 420 505a 1.194
266 43.3 453 410 475b 1.159
Fine 0 43.3 468 425 492a,b 1.168
133 43.3 467 423 495a,b 1.159
266 43.4 474 430 492a,b 1.137
SEM 0.9 6 6 5 0.008
Source of variation ------------P values----------
Drying T (°C) 0.448 0.463 0.474 0.129 0.261
Particle size (P) 0.305 0.006 0.006 0.970 <0.001
Enzyme 0.225 0.912 0.897 0.009 <0.001
T (°C) × Particle size 0.687 0.868 0.861 0.679 0.478
T (°C) × Enzyme 0.131 0.208 0.194 0.863 0.009
Particle size × Enzyme 0.373 0.254 0.254 0.024 0.336
T (°C) × P Size × Enzyme 0.138 0.547 0.521 0.669 0.877

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 20 male broiler chickens per pen.

1

Particle size: 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).

3

Adjusted feed conversion ratio (FCR) with body weight of mortality for this period.