Abstract
Study on stability of fungal phytase as poultry feed additive
Highlights
IntroductionPhytic acid (myo-inositol hexakiphosphate), or phytate, is a major storage form of phosphorus in plants (Mitchell et al, 1997)
Phytic acid, or phytate, is a major storage form of phosphorus in plants (Mitchell et al, 1997)
These problems can be circumvented by supplementation of the feed with a naturally and a recombinantly produced phytase that has a stability to digestive tract enzymes and has a pH activity profile ideally suited for maximal activity in the digestive tract of monogastric animals (Wodzinski and Ullah, 1996; Pandey et al, 2001)
Summary
Phytic acid (myo-inositol hexakiphosphate), or phytate, is a major storage form of phosphorus in plants (Mitchell et al, 1997). Most the phytate phosphorus ingested by these animals is excreted in the manure, causing environmental phosphorus pollution in areas of intensive livestock production (Bedford, 2000; Mullaney et al, 2000) These problems can be circumvented by supplementation of the feed with a naturally and a recombinantly produced phytase that has a stability to digestive tract enzymes and has a pH activity profile ideally suited for maximal activity in the digestive tract of monogastric animals (Wodzinski and Ullah, 1996; Pandey et al, 2001). Determination the resistance of the enzyme activities in potential feed additives to gastric and pancreatic proteolytic activity, and to investigate means of enhancing their resistance to proteolytic breakdown and determination the effect of phytase on dietary phosphorus bioavailability and performance of broilers
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