Table 3.

Mean body weight of laying hens fed different lignocellulose levels from 18 to 38 wk of age.

Age (wk)	Supplementation amount (kg/ton of feed)				Pooled SEM	P-values
	0	0.5	1	2		Fixed	Linear	Quadratic
Mean body weight (g)
16	1160.3	1155.8	1162.8	1157.3	23.32	0.974	0.933	0.905
18–20	1329.5	1342.5	1356.3	1327.3	16.61	0.099	0.784	0.056
21–23	1483.0c	1534.5b	1598.8a	1471.3c	22.60	<0.001	0.806	<0.001
24–26	1611.3b	1660.0a	1682.3a	1604.5b	22.8	0.001	0.578	<0.001
27–29	1627.5b,c	1654.5a,b	1676.3a	1617.5c	14.17	<0.001	0.462	<0.001
30–32	1635.0b,c	1668.8a,b	1687.3a	1617.8c	16.93	<0.001	0.296	<0.001
33–35	1643.8b,c	1681.3a,b	1704.5a	1630.8c	18.84	<0.001	0.430	0.001
36–38	1655.0c	1693.3b	1719.3a	1635.8c	9.45	<0.001	0.290	<0.001
Mean	1569.3c	1605.0b	1632.1a	1557.8c	9.78	<0.001	0.472	<0.001
Mean daily feed intake (g)
18–20	79.0b,c	80.8a,b	81.8a	78.0c	1.11	0.002	0.302	<0.001
21–23	90.0a,b	90.5a,b	92.0a	88.3b	1.56	0.031	0.193	0.016
24–26	95.3a,b	97.0a	97.3a	94.3b	1.58	0.041	0.276	0.007
27–29	97.5a,b	99.5a,b	101.0a	97.0b	1.81	0.028	0.623	0.003
30–32	100.8a,b	103.3a	103.5a	100.0b	1.46	0.007	0.347	0.001
33–35	103.8b	105.3a,b	107.8a	103.0b	1.48	0.002	0.601	0.001
36–38	107.5b	109.5a,b	111.0a	107.0b	1.60	0.016	0.609	0.002
Mean	96.3b	98.0a	99.2a	95.4b	0.63	<0.001	0.300	<0.001
Egg production (%)
18–20	21.8c	22.5b	23.5a	21.5c	0.21	0.001	0.614	<0.001
21–23	70.3c	72.6b	73.5a	70.3c	0.35	<0.001	0.701	<0.001
24–26	90.0b	91.8a	92.4a	89.5b	0.32	<0.001	0.362	0.001
27–29	92.1c	94.4b	95.6a	91.8c	0.32	<0.001	0.600	0.001
30–32	92.4c	94.5b	95.8a	92.0c	0.33	<0.001	0.536	<0.001
33–35	93.1c	94.7b	95.9a	92.6d	0.27	<0.001	0.415	<0.001
36–38	93.3c	95.2b	96.4a	92.7d	0.24	<0.001	0.390	<0.001
Mean	78.0c	80.8b	81.8a	78.6d	0.18	<0.001	0.494	<0.001
Mean egg weight (g)
18–20	45.0b,c	45.4a,b	45.8a	44.6c	0.21	<0.001	0.213	<0.001
21–23	50.3c	51.0b	51.7a	49.9c	0.35	<0.001	0.367	0.001
24–26	54.3c	55.6b	56.6a	53.9c	0.23	<0.001	0.501	<0.001
27–29	57.0c	58.3b	58.9a	56.1d	0.26	<0.001	0.156	<0.001
30–32	58.5c	59.9b	61.8a	57.4d	0.37	<0.001	0.318	<0.001
33–35	60.3c	61.8b	62.7a	58.9d	0.44	0.001	0.108	<0.001
36–38	61.5c	62.9b	63.8a	59.9d	0.37	<0.001	0.072	<0.001
Mean	55.3c	56.4b	57.3a	54.4d	0.27	<0.001	0.193	<0.001
EF
18–20	8.08a,b	7.91b	7.60c	8.12a	0.12	<0.001	0.596	<0.001
21–23	2.55a	2.45b,c	2.42c	2.52a,b	0.04	0.005	0.811	<0.001
24–26	1.95a	1.90a,b	1.86b	1.95a	0.03	0.003	0.795	<0.001
27–29	1.86a,b	1.81b	1.79b	1.88a	0.03	0.009	0.310	0.001
30–32	1.87a,b	1.82b	1.75c	1.89a	0.03	<0.001	0.504	<0.001
33–35	1.85a	1.80b	1.80b	1.89a	0.02	<0.001	0.080	<0.001
36–38	1.87a,b	1.83b	1.80b	1.93a	0.04	0.002	0.107	<0.001
Mean	2.86a	2.79b	2.72c	2.88a	0.02	<0.001	0.499	<0.001

^a,b,c Means bearing different superscripts within the same line are significantly different.

n: 4 replicate per treatment group (40 laying hen/pen).