%0 Journal Article %T The effects of phytase and root hydroalcoholic extract of Withania somnifera on productive performance and bone mineralisation of laying %A Tahmasbi, Abdol Mansour %A Mirakzehi, Mohammad Taher %A Hosseini, Seyed Javad %A Agah, Mohammad Javad %A Kazemi Fard, Mohammad %J British Poultry Science %@ 0007-1668 %D 2012