Table 7. Effect of xylanase addition on the feed conversion ratio of broilers from day 8 to 35 (g/g)

Treatment	NC-11)	NC-2	NC-3	NCX-1	NCX-2	NCX-3	PC	SEM	p-value
Day 8–14	1.26	1.22	1.30	1.32	1.27	1.27	1.20	0.077	0.737
Day 15–21	1.60	1.64	1.66	1.66	1.60	1.64	1.51	0.107	0.809
Day 22–24	1.31	1.36	1.37	1.33	1.34	1.34	1.24	0.081	0.750
Day 25–28	1.28	1.29	1.33	1.30	1.28	1.30	1.17	0.082	0.575
Day 29–35	1.45	1.44	1.48	1.40	1.44	1.46	1.34	0.089	0.757
Day 8–24	1.41	1.43	1.46	1.46	1.43	1.44	1.33	0.071	0.596
Day 25–35	1.37	1.37	1.40	1.36	1.38	1.40	1.27	0.082	0.719
Day 8–35	1.39	1.39	1.43	1.41	1.40	1.41	1.30	0.072	0.610

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.