Table 4. Effect of xylanase addition on the body weight of broilers from day 8 to 35 (g)

Treatment	NC-1¹⁾	NC-2	NC-3	NCX-1	NCX-2	NCX-3	PC	SEM	p-value
Day 8	134.24	133.63	134.7	133.89	134.06	134.43	134.96	0.952	0.827
Day 14	348.29^ab	348.86^ab	331.95^a	346.04^ab	359.21^b	363.96^b	359.88^b	8.285	0.004
Day 21	635.64	618.30	626.55	651.68	675.88	672.70	657.13	21.989	0.068
Day 24	838.72^ab	808.66^a	809.55^a	843.10^b	867.22^b	873.48^b	862.91^b	25.694	0.036
Day 28	1,180.82^abc	1,129.82^ab	1,120.54^a	1,168.33^abc	1,192.33^bc	1,211.19^c	1,207.28^c	34.989	0.037
Day 35	1,703.23	1,673.24	1,659.35	1,726.64	1,730.48	1,750.60	1,725.47	52.052	0.494

NC-1, −40 kcal/kg ME reduced from PC diet; NC-2, −80 kcal/kg ME reduced from PC diet; NC-3, −120 kcal/kg ME reduced from PC diet; NCX-1, NC-3 diet with 1,500 U/kg xylanase; NCX-2, NC-3 diet with 3,000 U/kg xylanase; NCX-3, NC-3 diet with 4,500 U/kg xylanase; PC, energy sufficient diet.
Values in a row with different superscripts differ significantly (p < 0.05).