Table 5. Effect of xylanase addition on the average daily gain of broilers from day 8 to 35 (g/d)

Treatment	NC-1¹⁾	NC-2	NC-3	NCX-1	NCX-2	NCX-3	PC	SEM	p-value
Day 8−14	30.72^ab	30.96^b	28.46^a	30.31^ab	32.16^b	32.7^9b	32.13^b	1.146	0.007
Day 15−21	41.05	38.49	42.09	43.66	45.24	44.11	42.46	2.789	0.279
Day 22−24	67.69	62.46	59.67	63.81	63.78	66.93	68.59	3.425	0.124
Day 25−28	85.53	80.04	77.25	81.31	81.28	84.43	86.09	4.431	0.118
Day 29−35	75.06	77.77	76.97	79.76	76.88	77.06	74.03	4.430	0.909
Day 8−24	42.26	40.47	40.64	41.72	43.13	43.47	42.82	1.500	0.292
Day 25−35	79.68	80.05	78.71	80.32	78.48	79.74	78.41	3.370	0.995
Day 8−35	56.80	56.02	56.88	56.96	57.02	57.72	55.59	1.851	0.942

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).