Table 2.

Effects of hulless barley and β-glucanase on β-glucan molecular weight in the ileal content of broiler chickens aged 28 d.

Hulless barley (%)	β-glucanase (%)	Molecular weight (g/mol)
		Mp1	Mw	MW-10%
0	0	21,536	30,486a,b	9,414a
	0.01	18,276	22,427b,c	5,702b
	0.1	14,324	14,620c,d	2,342c
30	0	19,652	35,863a	5,584b
	0.01	13,255	22,217b,c	3,359c
	0.1	8,952	10,347d	2,025c
60	0	19,799	36,199a	6,099b
	0.01	14,893	16,948c,d	3,407c
	0.1	7,793	8,434d	1,955c
SEM2		746.8	1507.8	363.7
Main effects
Hulless barley (%)
0		18,045a	22,511	5,819
30		13,953b	22,809	3,656
60		14,162b	20,527	3,820
β-Glucanase (%)
0		20,329a	34,183	7,032
0.01		15,475b	20,531	4,156
0.1		10,356c	11,134	2,107
ANOVA P-value
Hulless barley		<0.001	0.363	<0.001
β-Glucanase		<0.001	<0.001	<0.001
Hulless barley × β-glucanase		0.206	0.035	0.001

^a–dMeans within a main effect or interaction not sharing a common superscript are significantly different (P ≤ 0.05).

¹Mp = peak molecular weight; Mw = weight average molecular weight; MW-10% = maximum molecular weight for the smallest 10% molecules.

²SEM = pooled SEM (n = 6 cages per treatment).