Ahmadi, A Performance and egg quality of laying hens affected by different sources of phytase. [electronic resource] - Pakistan journal of biological sciences : PJBS Sep 2008 - 2286-8 p. digital Publication Type: Journal Article ISSN: 1028-8880 Standard No.: 10.3923/pjbs.2008.2286.2288 doi Subjects--Topical Terms: 6-Phytase--administration & dosageAnimal Feed--analysisAnimalsChickens--physiologyDietary SupplementsFemaleOvum