Table 2.

Effect of dietary SBE on production performance of laying ducks^a.

Itemsb	SBE add levels, g/kg				SEM	P-value
		Control	0.5	1.0	1.5
ADFI, g/d	131.850	131.857	131.478	131.991	0.085	0.927
AEW, g	61.891b	63.743ab	64.110a	61.391b	0.402	0.033
LR	0.7373	0.7504	0.7385	0.7349	0.008	0.927
FCR	2.718a	2.585b	2.501bc	2.710ab	0.017	0.044

^aDifferent letters within a row denote significant differences (P < 0.05).

^bValues represent the mean of six replicates (n = 30).

^cADFI, average daily feed intake; AEW, average egg weight; LR, laying rate; FCR, feed conversion ratio.