Table 6.

Effect of dietary treatments on nutrient ileal apparent digestibility of broiler chickens at 24 d of age

Items	Level (g/kg)	Gross energy	Protein	Starch
Control	0.0	0.60	0.64b	0.92
Whole yeast	0.5	0.62	0.64b	0.93
	1.0	0.62	0.65b	0.93
	1.5	0.61	0.69ab	0.92
	2.0	0.64	0.72a	0.93
Yeast cell wall	0.5	0.60	0.64b	0.92
	1.0	0.61	0.65b	0.92
	1.5	0.64	0.72a	0.93
	2.0	0.64	0.73a	0.94
SEM		0.006	0.004	0.001
p-value		0.08	0.001	0.11
Probability levels of orthogonal contrasts
Control vs yeast		0.11	0.001	0.19
Control vs whole yeast		0.16	0.001	0.27
Control vs yeast cell wall		0.10	0.001	0.16
Whole yeast vs yeast cell wall		0.69	0.05	0.64

Values are means of 6 replicates.

SEM, standard error of the mean.

^a,bMeans in a column not sharing a common superscript differ(p<0.05).