Table 2.

Degradation (%) of phytic acid or myo-inositol hexakisphosphate (IP₆) throughout the gastro-intestinal tract of pigs.

References	Analyte	Phytase, U/kg	Stomach	Duodenum	Ileum	Total tract
Jongbloed et al. (1992, corn-soybean meal diet)	Phytic acid	0		21.5	9.6
		1,500		69.2	59.7
Jongbloed et al. (1992, Dutch diet)	Phytic acid	0		1.2	−1.4
		1,500		93.2	74.0
Kemme et al. (2006)	IP6	0		7	27
		150		22	43
		900		52	65
Schlemmer et al. (2001)	Phytic acid	0.2	16.8			97.4
		43.1	58.1			97.7
Rosenfelder-Kuon et al. (2020)	IP6	0			18.4	96.6
		750			76.3	97.5
		1,500			83.2	98.6
		3,000			85.0	97.4
Rosenfelder-Kuon et al. (2020)	IP6	0			30.1-31.2	98.5-98.9
		1,500			92.1-92.3	98.9