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 ab ...