1. AOAC, 1990. Official Methods of Analysis, fifteenth edn., Association of Official Analytical Chemists. Washington, DC, USA
2. Phosphorus requirements of growing pigs and effect of steam pelleting on phosphorus availability;Bayley;J. Anim. Sci.,1969
3. Solubility and net exchange of calcium, magnesium and phosphorus in digesta flowing along the gut of the sheep;Ben-Ghedalia;Br. J. Nutr.,1975
4. Phytase and alkaline phosphatase activities in intestinal mucosae of rat, chicken, calf, and man;Bitar;Biochim. Biophys. Acta.,1972
5. Broderick, G.A., 1975. Factors affecting ruminant responses to protected amino acids and proteins. In: Friedman, M. (Ed.), Protein Nutritional Quality of Foods and Feeds, Vol. 1. Marcel Dekker, New York, pp. 211–259