Table 7.

Effects of dietary treatments on ileal bacterial populations (log₁₀ cfu/g).

Item		Lactobacilli	Coliforms
Organic acid, g/kg	Fiber source1
0	No fiber	10.35b	7.64
	SF	11.35b	7.63
	IF	9.33b	8.68
1	No fiber	15.06a	11.46
	SF	8.61b	8.41
	IF	15.96a	11.03
Organic acid, g/kg
0		10.34b	7.98
1		13.21a	10.30
Fiber source
No fiber		12.71a	9.55
SF		9.98b	8.02
IF		12.65a	9.85
Pooled SEM		1.33	1.95
P-value
Organic acid		0.002	0.002
Fiber source		0.021	0.029
Organic acid × fiber source		<0.001	0.021

SF = soluble fiber; IF = insoluble fiber.

^{a, b, c} Values in the same column not sharing a common superscript differ significantly (P < 0.05).

¹Rice hull as IF or sugar beet pulp as SF was supplemented at 30 g/kg to replace silica sand in the basal diet.