. 2021 Jul 13;99(8):skab211. doi: 10.1093/jas/skab211

Table 8.

Concentrations (g/kg) of apparent total tract digestible minerals in diets containing different concentrations of phytate and phytase dose¹ ^–3

	Apparent total tract digestible minerals, g/kg
Item	Ca	P	Na	Mg	K
0.23% phytate-bound P⁴
0 PhyG, FTU/kg	3.70^f	0.68^j	1.16^g	0.27^e	5.85^c
500 PhyG, FTU/kg	5.05^de	1.88^h	1.27^fg	0.28^e	6.22^ab
1,000 PhyG, FTU/kg	5.08^de	2.26^fg	1.39^de	0.37^abcde	6.36^a
2,000 PhyG, FTU/kg	5.54^bc	2.29^f	1.43^cde	0.38^abcde	6.41^a
4,000 PhyG, FTU/kg	5.95^a	2.63^de	1.52^bc	0.40^abcd	6.28^a
0.29% phytate-bound P⁵
0 PhyG, FTU/kg	3.66^f	0.94ⁱ	1.27^fg	0.31^de	5.89^bc
500 PhyG, FTU/kg	5.14^cde	2.07^g	1.27^fg	0.43^ab	5.69^c
1,000 PhyG, FTU/kg	4.92^de	2.52^e	1.48^bcd	0.37^abcde	5.89^bc
2,000 PhyG, FTU/kg	5.67^ab	2.90^bc	1.54^b	0.45^ab	6.48^a
4,000 PhyG, FTU/kg	5.61^ab	3.23^a	1.52^bc	0.42^abc	6.50^a
0.35% phytate-bound P⁶
0 PhyG, FTU/kg	3.88^f	1.12ⁱ	1.21^g	0.35^bcde	5.19^e
500 PhyG, FTU/kg	4.86^e	2.32^f	1.34^ef	0.39^abcd	4.90^e
1,000 PhyG, FTU/kg	5.07^de	2.76^cd	1.43^bcde	0.46^a	5.27^de
2,000 PhyG, FTU/kg	4.80^e	3.06^ab	1.69^a	0.35^bcde	5.56^cd
4,000 PhyG, FTU/kg	5.30^bcd	3.01^b	1.73^a	0.31^cde	5.20^e
SEM	0.179	0.102	0.047	0.065	0.153
P-value
Phytate-bound P	0.007	<0.001	<0.001	0.066	<0.001
PhyG	<0.001	<0.001	<0.001	0.041	<0.001
Phytate-bound P × PhyG	0.005	<0.001	0.004	0.050	0.017

¹FTU, phytase units.

²Data are least squares means of eight observations per treatment, except for 0.23% phytate-bound P with 4,000 FTU/kg PhyG diet, 0.35% phytate-bound P with 1,000 FTU/kg PhyG diet, 0.23% phytate-bound P with 1,000 FTU/kg PhyB diet, 0.29% phytate-bound P with 1,000 FTU/kg PhyB diet, and 0.35% phytate-bound P with 4,000 FTU/kg PhyG diet which represent seven observations per treatment.

³Concentrations of apparent total tract digestible minerals in the diets were calculated by multiplying values for the ATTD (%) of minerals by the analyzed concentration of minerals in the diets.

⁴Linear and quadratic increase for Ca, P, and Na: P < 0.05; Linear increase for Mg: P < 0.05; Quadratic increase for K: P < 0.05.

⁵Linear and quadratic increase for Ca, P, and Na: P < 0.05; Linear increase for K: P < 0.05.

⁶Linear and quadratic increase for Ca, P, and Na: P < 0.05; Quadratic increase for K: P < 0.05.

^a–jMeans within a column lacking a common letter are different (P ≤ 0.05).