#$%^&*AU2015218557A120150917.pdf#####ABSTRACT A method of feeding is described. The method comprises feeding a mono-gastric animal with a feed, wherein said feed comprises a phytase, wherein said phytase results in an improvement in one or more of said animals biophysical characteristics, especially when compared to the equivalent use of Peniophora lycii phytase and/or an E. coli phytase. In particular, the method results in an improvement in said animals biophysical characteristics as a food source.