Efficacy of Phytase Effect on Other Nutrients

The amount that fecal phosphorus levels decline with phytase supplementation will depend on the percentage of phosphorus that is available in the base ration (Yi, 1996b). With available phosphorus at 0.05% of the ration in this study, excretion of phosphorus was reduced by about 25% in pigs receiving phytase compared to the control animals. When the base diet in this study contained 0.16% available phosphorus, excretion was reduced by 50% in pigs receiving phytase but no inorganic phosphorus. 

Phytase addition can have other effects in addition to helping to release phosphorus from phytate (Denbow, 1995 Yi, 1996d)  

Heat stability is a critical issue for commercial phytase products. Since phytase can 

untreated fabric after biofinishing with cellulose 

In summary, the savings from reduced phosphorus costs can virtually offset the cost of phytase itself, which would make the significant environmental benefits remarkably inexpensive to achieve. 

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