Table 3. Effects of CSL on productive performance of laying hens¹

Items	Dietary treatment2			SEM3	P-value
	CON	CSL 0.5	CSL 3.0
Hen-day egg production (%)
week 44—45	82.162	82.147	82.216	0.208	0.990
week 45—46	81.729	81.944	82.193	0.246	0.748
week 46—47	81.498	81.791	82.221	0.251	0.340
week 47—48	80.635a	81.514ab	82.147b	0.251	0.013
week 44—48	81.506	81.849	82.194	0.230	0.316
Egg weight (g)
Week 44—45	60.79	61.26	61.98	0.518	0.644
Week 45—46	61.19	62.06	62.98	0.513	0.389
Week 46—47	61.32	62.88	63.84	0.476	0.128
Week 47—48	61.27a	63.25ab	65.00b	0.559	0.049
Week 44—48	61.14	62.36	63.45	0.504	0.208
Egg mass4 (g/d/hen)
Week 44—45	49.96	50.33	50.97	0.549	0.752
Week 45—46	50.03	50.87	51.77	0.563	0.468
Week 46—47	49.86	51.44	52.50	0.535	0.163
Week 47—48	49.30a	51.58ab	53.67b	0.606	0.033
Week 44—48	49.79	51.06	52.23	0.554	0.232
Feed conversion ratio5 (g feed/g egg)
Week 44—45	2.13	2.04	2.03	0.026	0.252
Week 45—46	2.08	2.05	2.02	0.029	0.696
Week 46—47	2.08	2.03	1.95	0.027	0.164
Week 47—48	2.18a	2.00a	1.96b	0.022	0.002
Week 44—48	2.12	2.03	1.99	0.023	0.098

Values are mean of six replicates per treatment.
CON: Basal diet meets the recommended nutritional requirements for Hy-Line Brown; CSL 0.5: CON + 5 g/kg CSL; CSL 3.0: CON + 30 g/kg CSL.
SEM = standard error of mean.
Egg mass = Average egg weight / Hen-day egg production.
Feed conversion ratio = Total feed intake / Total egg mass.
Means in a row with different letters are significantly different (P<0.05).