McGinnis, L. M., M. R. Widmer, C. L. Wright, T. M. Parr, and H. H. Stein. 2007. Effects of a Pichia-expressed phytase on performance and P excretion of growing pigs. J. Anim. Sci. 85(Suppl. 1):438 (Abstr.) Link to abstract (.pdf)
McGinnis, L. M., M. R. Widmer, C. L. Wright, T. M. Parr, and H. H. Stein. 2007. Effects of feeding an evolved E.coli-derived phytase to weanling and growing pigs. J. Anim. Sci. 85(Suppl. 2):112 (Abstr.) Link to abstract (.pdf)