Table 3.

Growth performance of nursery pigs fed diets with increasing levels of xylanase

Item	Xylanase, XU per kg feed					SEM	P-value
	0	220	440	880	1,760		Linear	Quad1	0 vs. Xyl2
BW, kg
Days 0 to 1	6.9	6.9	6.8	6.9	6.9	0.6	0.923	0.929	0.842
Day 10	7.7	7.3	7.1	7.4	7.2	0.69	0.310	0.279	0.053
Day 24	12.5	12.5	11.9	12.4	12.4	1.05	0.929	0.536	0.704
Day 31	16.5	16.1	14.9	15.8	16.2	1.35	0.949	0.236	0.372
Day 38	20.7	20.8	19.9	20.7	21.4	1.58	0.566	0.464	0.944
ADG, g/d
Days 1 to 10	78	39	26	45	35	26	0.281	0.247	0.040
Days 11 to 24	342	371	343	357	374	34	0.491	0.867	0.544
Days 25 to 31	579	591	575	595	639	40	0.231	0.667	0.622
Days 31 to 38	596	675	715	702	746	52	0.057	0.337	0.038
Overall	361	364	345	363	383	22	0.397	0.558	0.817
ADFI, g/d
Days 1 to 10	152	106	105	111	119	32	0.589	0.172	0.070
Days 11 to 24	489	470	425	468	483	43	0.812	0.320	0.449
Days 25 to 31	943	1,007	1,019	1,031	1,102	79	0.057	0.770	0.120
Days 31 to 38	1,079	1,180	1,309	1,200	1,338	100	0.023	0.472	0.021
Overall	578	593	582	605	633	48	0.131	0.879	0.419
G:F
Days 1 to 10	0.52	0.35	0.25	0.41	0.30	0.13	0.421	0.530	0.135
Days 11 to 24	0.69	0.78	0.80	0.76	0.78	0.04	0.369	0.288	0.047
Days 25 to 31	0.61	0.60	0.57	0.58	0.58	0.04	0.478	0.432	0.331
Days 31 to 38	0.55	0.57	0.55	0.59	0.56	0.04	0.944	0.527	0.713
Overall	0.61	0.62	0.60	0.60	0.61	0.03	0.815	0.717	0.866

Quadratic.

Xylanase (220 + 440 + 880 + 1,760 XU per kg feed).