Table 3. Fecal nitrogen and phosphorus contents according to dietary crude protein and additional phytase levels

Phytase (ppm)	CP (%)	Nitrogen (%)	Phosphorus (%)
1,000	22	3.66^ab	1.18^a
	21	3.42^cd	1.20^a
	20	3.45^bcd	1.22^a
800	22	3.74^a	1.17^a
	21	3.57^abcd	1.17^a
	20	3.38^cd	1.09^b
500	22	3.77^a	0.99^c
	21	3.59^abc	1.00^c
	20	3.36^d	1.10^b
SEM¹		0.132	0.044
Phytase (ppm)
1,000		3.51	1.20^a
800		3.56	1.14^a
500		3.57	1.03^b
SEM²		0.191	0.089
CP (%)
22		3.72^a	1.11
21		3.52^b	1.12
20		3.40^c	1.14
SEM³		0.133	0.092
P-value
Phytase		0.70	<0.01
CP		<0.01	0.85
Phytase × CP		<0.01	<0.01

SEM, standard error of means (n=36).
SEM, standard error of means (n=12).
SEM, standard error of means (n=12).
Means in same rows with different superscripts are significantly different (P<0.05).