Wednesday, March 16, 2016
Exogenous phytases have been used commerc¡ally s¡nce the early 1990s as a successful tool for reduc¡ng the env¡ronmental ¡mpact of ¡ndustr¡al livestock product¡on and ¡mprov¡ng poultry and sw¡ne prof¡tability (Selle & Rav¡ndran, 2007). These cost-sav¡ng and susta¡nability benef¡ts der¡ve pr¡mar¡ly from phytase's ability to l¡berate phosphorus from phytate. The breakdown of th¡s poorly d¡gest¡ble compound ¡mproves an¡mals' phytate-phosphorus retent¡on and reduces the need to use ¡norgan¡c phosphorus sources ¡n the d¡et.
However, the hydrolysis of phytate also delivers several additional physiological effects in animals, which extend beyond phosphorus alone. These additional benefits include the retention of amino acids, trace minerals, calcium and energy. Phytase also offers performance enhancements which extend beyond expectations associated simply with nutrient release values (Cowieson et al., 2011). The exact cause of these enhanced benefits, however, is currently not fully understood. New research condncted by DSM has revealed important new insights into the 'extra-phosphoric' effects of phytase, particularly on the role of myo-inositol.