. 2019 Mar 31;61(2):87–97. doi: 10.5187/jast.2019.61.2.87

Table 6. AME and ileal digestibility coefficient of minerals of 24-d old broilers that consumed diets with different levels of Na with or without phytase.

Na level¹⁾	Phytase²⁾	AME (MJ/kg)	N	Ca	P	Na	K	Mg
Low	None	14.92^ab	0.75	0.47^a	0.50	–0.56	0.85	0.12^b
	Plus	14.92^ab	0.80	0.38^a	0.54	−0.45	0.89	0.30^a
Mid	None	14.95^ab	0.76	0.38^a	0.46	0.05	0.89	0.16^ab
	Plus	14.88^ab	0.79	0.33^a	0.47	−0.25	0.87	0.16^ab
High	None	14.06^c	0.71	0.16^b	0.31	0.19	0.87	−0.12^c
	Plus	15.22^a	0.78	0.39^a	0.50	0.13	0.90	0.17^ab
SEM		0.03	0.02	0.08	0.06	0.25	0.02	0.08
Na level
Low		14.9	0.78	0.43^a	0.52^a	–0.50^b	0.87	0.21^a
Mid		14.8	0.77	0.36^ab	0.47^ab	–0.10^b	0.88	0.16^ab
High		14.6	0.75	0.27^b	0.41^b	0.16^a	0.88	0.03^b
	Phytase
	None	14.6^b	0.74^b	0.37	0.43^b	–0.11	0.87	0.05^b
	Plus	14.9^a	0.79^a	0.34	0.51^a	–0.19	0.88	0.21^a
Source of variation
Na		ns	ns	*	*	***	ns	**
Phytase		*	***	ns	*	ns	ns	***
Na × phytase		***	ns	*	ns	ns	ns	*

Means were obtained from 6 replicates (2 birds per cage).

^a–c

Means within a column without common superscript are statistically different (p < 0.05).

¹⁾

Low, 1.5 g Na/kg; Mid, 2.5 Na/kg; High, 3.5 g Na/kg.

²⁾

None, without phytase; plus, with (500 U/kg) phytase.

^ns

p > 0.05; ^* p < 0.05; ^** p < 0.01; ^*** p < 0.001.

AME, apparent metabolizable energy.