Table 3.

Influence of dietary phytase, inositol and phosphorus (P) content on bone parameters of broilers at 21 d.¹

Item2	Inositol, g/kg	Phytase, FTU/kg	Strength, kg	Ash, %	Ca, %	P, %
P level
Low	0	0	3.57	48.23	34.70	16.59
Low	3	0	3.16	48.90	34.67	16.56
Low	0	1,500	3.89	50.50	33.10	17.72
Low	3	1,500	3.98	48.57	32.28	17.56
Medium	0	0	3.88	51.28	34.97	16.89
Medium	3	0	3.63	50.54	34.48	17.72
Medium	0	1,500	3.59	52.02	32.51	17.02
Medium	3	1,500	3.02	51.99	32.77	17.51
High	0	0	3.30	52.47	34.70	17.02
High	3	0	3.16	51.99	32.06	17.84
High	0	1,500	3.64	50.88	30.04	16.99
High	3	1,500	3.27	50.65	31.49	17.28
LSD 5%			0.40	2.57	2.89	0.78
Low			3.65	49.05	33.69	17.11
Medium			3.53	51.46	33.68	17.28
High			3.34	51.50	32.07	17.28
LSD 5%			0.20	1.28	1.44	0.39
	0		3.64	50.90	33.34	17.04
	3		3.37	50.44	32.96	17.41
LSD 5%			0.16	1.05	1.18	0.32
		0	3.45	50.57	34.26	17.10
		1,500	3.56	50.77	32.03	17.35
LSD 5%			0.16	1.05	1.18	0.32
P-value
P level			0.089	0.009	0.174	0.750
Inositol			0.018	0.524	0.638	0.092
P level × Inositol			0.640	0.985	0.969	0.314
Phytase			0.322	0.780	0.007	0.266
P level × Phytase			0.002	0.262	0.942	0.032
Inositol × Phytase			0.941	0.705	0.403	0.441
Inositol × Phytase × P level			0.268	0.593	0.447	0.924

LSD = least significant difference.

¹Means represent the average response of 5 chicks per treatment.

²Low, medium and high P levels were set as 3.2, 4.8 and 6.0 g/kg for starter, and 2.2, 3.8 and 5.0 g/kg for finisher phases, respectively.