8Cromwell G L, T S Stahly, R D Cofffey, et al. Efficacy of phytase in improving the bioavailability of phophorus in soybean meal and corn--soybean meal diet for pigs. J Anim Sci , 1993; 71 (7):1831 - 1840.
9Perney KM, Cantor A H, StrawM L, et al. The effect ofdictary phytase on growth performance and phosphorus utilization of broiler chicks. Poult Sci, 1993, 72(11 )2106 -2114.
10L G Young, M Leunissen, J L Atkinson. Addition of microbial phytase to diets of young pigs. J Anim Sci, 1993, 71: 2147- 2150.
