Table 4.

Effect of dietary inclusion of cassava starch extraction residue meal (CReM) on egg production variables of laying Longyan ducks aged from 21 to 36 wk.¹

Variables	Dietary CReM levels				SEM2	P-value
	Control (0)	5%	10%	15%		CReM	Linear	Quadratic
Egg production, %	93.59	95.47	93.80	94.57	0.59	0.709	0.963	0.304
Non-marketable eggs3, %	0.77	1.06	0.73	0.53	0.09	0.709	0.963	0.304
Egg weight, g	62.49	62.61	62.46	61.97	0.22	0.754	0.719	0.688
Daily egg mass, g/bird	59.09	59.74	58.61	59.09	0.36	0.803	0.573	0.494
Daily feed intake, g	154.79	155.35	154.00	150.92	0.43	<0.001	0.008	0.024
Feed conversion ratio, g feed: g egg	2.62	2.61	2.60	2.59	0.01	0.842	0.533	0.721

¹Each value is the mean of 6 replicates.

²Pooled standard error of mean.

³Non-marketable eggs (broken, small, large, or shell-less eggs).