Table 6.
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.
Particle size: coarse corn (800–900 μm), and fine corn (400–500 μm).
Ronozyme HiStarch CT to supply 80 (133 g ton-1) and 160 (266 g ton-1) kilo-Novo alpha amylase units (KNU).
Adjusted feed conversion ratio (FCR) with body weight of mortality for this period.