individual publications academic article Efficacy of E. coli phytases expressed in yeast for releasing phytate-bound phosphorus in young chicks and pigs. Journal of Animal Science. 81:474-483. 2003 document part Efficacy of different phytase products for young chicks and pigs. 75. 2002 Phosphorus efficacy of E. coli phytase in young chicks. 11. 2002