. 2014 Feb;27(2):237–246. doi: 10.5713/ajas.2013.13370

Table 5.

Effects of phytase on IP₆ concentration in digesta and apparent ileal digestibilities of nutrients in growing pigs (Exp. 2)

	Positive control	Phytase level (FTU/kg)				SEM	p-value

		0	500	1,000	20,000		Treat	Linear	Quadratic
DM (%)	72.3^ab	71.6^b	72.3^ab	72.6^ab	74.5^a	0.59	0.02	<0.01	0.31
GE (%)	74.4^b	74.0^b	74.3^b	74.8^b	76.8^a	0.50	<0.01	0.01	0.41
CP (%)	74.1^b	74.0^b	74.1^b	75.7^ab	78.1^a	1.05	0.04	0.01	0.34
Ca (%)	61.1^b	44.0^c	56.9^b	59.1^b	68.9^a	2.16	<0.01	<0.01	<0.01
P (%)	56.1^b	38.3^c	53.1^b	59.5^b	75.8^a	2.11	<0.01	<0.01	<0.01
IP₆ (%)¹	19.4^c	11.1^c	58.6^b	64.1^b	80.0^a	2.89	<0.01	<0.01	<0.01
IP₆ in free-dried digesta (mg/kg)	6.75^c	7.43^c	3.59^b	2.97^b	1.60^a	0.25	<0.01	<0.01	<0.01
Essential AA (%)
Arginine	87.9	89.3	88.9	89.3	89.4	0.58	0.39	0.86	0.97
Histidine	81.3	80.6	80.7	81.6	79.6	1.98	0.92	0.47	0.74
Isoleucine	82.4^b	83.4^ab	84.2^ab	85.0^ab	86.1^a	0.75	0.03	0.06	0.20
Leucine	82.7	83.6	84.5	84.6	86.0	0.74	0.06	0.06	0.41
Lysine	79.2^b	79.4^b	80.7^ab	81.6^ab	83.6^a	1.04	0.04	0.02	0.19
Methionine	88.4	87.9	87.6	87.8	89.8	0.86	0.49	0.09	0.83
Phenylalanine	82.6	82.9	82.9	84.3	84.7	0.79	0.25	0.18	0.24
Threonine	65.8^b	68.8^ab	71.1^a	70.4^a	73.5^a	1.16	<0.01	0.04	0.39
Tryptophan	68.6	68.2	71.8	69.9	72.2	1.64	0.30	0.30	0.52
Valine	76.0^b	77.1^b	79.6^ab	80.1^ab	81.4^a	1.15	<0.01	0.06	0.11
Nonessential AA (%)
Alanine	74.5	76.7	76.8	77.4	78.7	1.03	0.11	0.15	0.70
Aspartic acid	75.5^b	76.2^b	78.1^ab	78.9^ab	81.3^a	1.03	<0.01	0.01	0.12
Cystine	62.3	60.9	61.1	61.4	65.3	1.98	0.69	0.17	0.93
Glutamic acid	84.5	83.9	84.0	84.3	86.0	0.96	0.67	0.13	0.82
Glycine	60.8	62.4	64.3	65.1	69.5	2.29	0.14	0.06	0.47
Proline	73.7	73.9	71.4	76.6	77.8	2.04	0.27	0.16	0.44
Serine	75.5^b	77.5^ab	78.4^ab	79.1^ab	80.4^a	0.95	0.02	0.12	0.32
Tyrosine	81.1	78.4	80.7	82.4	81.0	1.12	0.17	0.77	0.02

IP₆ means inositol hexaphosphate.

^a–c

Means in the same row with different superscripts differ (p<0.05).