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

Table 6.

Effect of corn drying temperature (T), particle size (P), and enzyme supplementation on live performance of Cobb 500 male broilers at 28 D raised in floor pens (Experiment 1).

Drying T (°C) Particle size1 Enzyme2 (g ton-1) BW
BWG
Feed intake
FCR3
28 D 0–28 D 0–28 D 0–28 D
--------(g)-------- -(g:g)-
35 1,826 1,781 2,517 1.414
120 1,824 1,778 2,498 1.398
SEM 5 5 8 0.003
Coarse 1,810 1,765 2,497 1.410
Fine 1,840 1,794 2,518 1.402
SEM 5 5 8 0.003
0 1,812b 1,767b 2,494 1.409
133 1,837a 1,791a 2,522 1.401
266 1,826a,b 1,780a,b 2,506 1.408
SEM 6 6 10 0.004
35 Coarse 1,803c 1,758c 2,502 1.421
Fine 1,849a 1,804a 2,531 1.407
120 Coarse 1,818b,c 1,772b,c 2,492 1.398
Fine 1,830b 1,785b 2,504 1.397
SEM 7 7 12 0.004
35 0 1,809 1,763 2,507 1.421
133 1,840 1,794 2,532 1.411
266 1,830 1,785 2,511 1.410
120 0 1,816 1,770 2,482 1.397
133 1,835 1,789 2,511 1.390
266 1,822 1,776 2,502 1.406
SEM 8 8 15 0.006
Coarse 0 1,784c 1,739c 2,476 1.425a
133 1,824b 1,778b 2,500 1.398b,c
266 1,823b 1,778b 2,516 1.406b,c
Fine 0 1,841a,b 1,795a,b 2,513 1.393c
133 1,850a 1,805a 2,543 1.403b,c
266 1,828a,b 1,783a,b 2,497 1.410a,b
SEM 8 8 15 0.006
Source of variation ----------P values---------
Drying T (°C) 0.714 0.733 0.136 0.001
Particle size (P) <0.001 <0.001 0.097 0.104
Enzyme 0.006 0.006 0.194 0.315
T (°C) × Particle size 0.008 0.009 0.503 0.168
T (°C) × Enzyme 0.584 0.586 0.854 0.193
Particle size × Enzyme 0.005 0.005 0.075 0.003
T (°C) × P Size × Enzyme 0.100 0.095 0.495 0.778

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.