Table 7.

Inositol phosphate ester content of the ileum of broilers fed diets adequate or deficient in aP and Ca, with zero, 500, or 1,500 FTU/kg phytase, for 21 days.

			mg/g DM
Ileum		IP61,2 disappearance	IP61	IP51	IP4	IP3	Inositol
		Simple effect means
Negative control (NC)		0.788	8.4	1.89	1.61	0.62	1.72
NC + 500 FTU/kg		0.938	3.6	0.55	1.04	0.67	2.26
NC + 1,500 FTU/kg		0.951	2.4	0.41	1.31	0.49	2.86
Positive control (PC)		0.671	14.9	2.29	1.69	0.44	1.23
PC + 500 FTU/kg		0.902	5.9	0.98	1.72	0.58	1.90
PC + 1,500 FTU/kg		0.953	2.5	0.45	1.48	0.63	2.07
SEM		0.0177	0.930	0.16	0.178	0.121	0.135
		Main effect means
aP, %	0.35	0.892	4.79	0.95	1.32	0.59	2.28
	0.50	0.842	7.79	1.24	1.63	0.55	1.73
SEM		0.0102	0.537	0.094	0.126	0.070	0.078
Phytase3	0	0.730	11.67	2.09	1.65	0.53	1.47
	500	0.920	4.77	0.77	1.38	0.62	2.08
	1,500	0.952	2.44	0.43	1.39	0.56	2.47
SEM		0.0125	0.658	0.12	0.126	0.086	0.095
			P-values for main effects
aP, %		0.001	0.008	0.035	0.041	0.670	<0.001
Phytase		<0.001	<0.001	<0.001	0.257	0.734	<0.001
aP × phytase		0.003	0.105	0.106	0.199	0.410	0.276
			P-values for orthogonal contrasts
Phytase linear			<0.001	<0.001			<0.001
Phytase quadratic			0.013	<0.001			0.102
PC linear		<0.001
PC quadratic		<0.001
NC linear		<0.001
NC quadratic		<0.001

¹Log transformation prior to analysis.

²Coefficients of IP6 disappearance

³FTU/kg.

No IP2 detected.

8 replications per diet.

IP6-3: Inositol phosphate ester with 6-3 bound phosphate molecules.