Bergman, E. L., Fredlund, K., Reinikainen, P. and Sandberg, A. S. 1999. Hydrothermal processing of barley (cv. Blenheim): optimisation of phytate degradation and increase of free myo-inositol. Journal of Cereal Science 29: 261–272.
Bergman, E. L., Fredlund, K., Reinikainen, P. and Sandberg, A. S. 2001. Development of predictive models for optimization of phytate degradation in wheat and rye during hydrothermal processing. Cereal Chemistry 78: 144–150.
Breves, G. and Schröder, B. 1991. Comparative aspects ofgastrointestinal phosphorus metabolism. Nutrition Research Reviews 4: 125–140.
Carlson, D. and Poulsen, H. D. 2003. Phytate degradation in soaked and fermented liquid feed effect of diet, time of soaking, heat treatment, phytase activity, pH and temperature. Animal Feed Science and Technology 103: 141–154.
Cromwell, G. L., Hays, V. W., Chaney, C. H. and Overfield, J. R. 1970. Effects of dietary phosphorus and calcium level on zperformance, bone mineralization and carcass characteristics of swine. Journal of Animal Science 30: 519–525.
Eeckhout, W. and De Paepe, M. 1994. Total phosphorus, phytatephosphorus and phytase activity in plant feedstuffs. Animal Feed Science and Technology 47: 19–29.
Engelen, A. J., Heeft van der, F. C., Randsdorp, P. H. G. and Smit, E. L. C. 1994. Simple and rapid determination of phytase activity. Journal of AOAC International 77: 760–764.
Finco, D. R. 1989. Kidney function. In Clinical biochemistry of domestic animals, fourth edition (ed. Kaneko, J. J.), pp. 496–542. Academic Press, Inc., San Diego, CA.
Fredlund, K., Asp, N. G., Larsson, M., Marklinder, I. and Sandberg, A. S. 1997. Phytate reduction in whole grains of wheat, rye, barley and oats after hydrothermal treatment. Journal of Cereal Science 25: 83–91.
Guéguen, L. and Perez, J. M. 1981. A re-evaluation of recommended dietary allowances of calcium and phosphorus in pigs. Proceedings of the Nutrition Society 40: 273–278.
Guyton, A. C. and Hall, J. E. 2000. Textbook of medical physiology, 10th edition. W. B. Saunders Company, Philadelphia, PA.
Helander, E. and Partanen, K. 1997. Effects of phosphorus level and microbial phytase supplementation on the performance and bone mineralization in pigs. Acta Agriculturæ Scandinavica. Section A, Animal Science 47: 159–167.
Irving, G. C. J. 1980. Phytases. In Inositol phytates (ed.Cosgrove, D. J.), pp. 85–127. Elsivier, Amsterdam.
Jongbloed, A. W. 1987. Phosphorus in the feeding of pigs, effect of diet on the absorption and retention of phosphorus by growing pigs. Ph. D. thesis, Wagening Agricultural University.
Jongbloed, A. W. and Everts, H. 1992. Apparent digestible phosphorus in the feeding of pigs in relation to availability, requirement and environment. 2. The requirement of digestible phosphorus for piglets, growing-.nishing pigs and breeding sows. Netherlands Journal of Agricultural Science 40: 123–136.
Jongbloed, A. W. and Kemme, P. A. 1990. Apparent digestible phosphorus in the feeding of pigs in relation to availability, requirement and environment. 1. Digestible phosphorus in feedstuffs from plant and animal origin. Netherlands Journal of Agricultural Science 38: 567–575.
Jongbloed, A. W., Kemme, P. A. and Top van den., A. M. 2001. The role of nutrition in reducing the accumulation of minerals in the environment by pigs. EAAP, 52nd annual meeting, Budapest, Hungary, p. 15.
Jongbloed, A. W., Mroz, Z. and Kemme, P. A. 1992. The effect of supplementary Aspergillus niger phytase in diets for pigs on concentration and apparent digestibility of dry matter, total phosphorus, and phytic acid in different sections of the alimentary tract. Journal of Animal Science 70: 1159–1168.
Kell, G. S. 1975. Density, thermal expansivity, and compressibility of liquid water from 0 deg. to 150 deg. Correlations and tables for atmospheric pressure and saturation reviewed and expressed on 1968 temperature scale. Journal of Chemical and Engineering Data 20: 97–105.
Kornegay, E. T., Thomas, H. R. and Baker, J. L. 1981. Phosphorus in swine. IV. In.uence of dietary calcium and phosphorus and protein levels on feedlot performance, serum minerals, bone development and soundness scores in boars. Journal of Animal Science 52: 1070–1090.
Larsen, T., Skoglund, E., Sandberg, A. S. and Engberg, R. M. 1999 Soaking and pelleting of pig diets alters the apparent absorption and retention of minerals. Canadian Journal of Animal Science 79: 477–483.
Liu, J., Bollinger, D. W., Ledoux, D. R., Ellersieck, M. R. and Veum, T. L. 1997. Soaking increases the efficacy of supplemental microbial phytase in a low-phosphorus corn-soybean meal diet for growing pigs. Journal of Animal Science 75: 1292–1298.
Moore, J. H. and Tyler, C. 1955. Studies on the intestinal absorption and excretion of calcium and phosphorus in the pig. 1. A critical study of the bergeim technique for investigating the intestinal absorption and excretion of calcium and phosphorus. British Journal of Nutrition 9: 63–83.
Mroz, Z., Jongbloed, A. W. and Kemme, P. A. 1994. Apparent digestibility and retention of nutrients bound to phytate complexes as influenced by microbial phytase and feeding regimen in pigs. Journal of Animal Science 72: 126–132.
Näsi, J. M., Helander, E. H. and Partanen, K. H. 1995. Availability for growing pigs of minerals and protein of a high phytate barleyrapeseed meal diet treated with Aspergillus niger phytase or soaked with whey. Animal Feed Science and Technology 56: 83–98.
Näsi, M., Partanen, K. and Piironen, J. 1999. Comparison of Aspergillus niger phytase and Trichoderma reesei phytase and acid phosphatase on phytate phosphorus availability in pigs fed on maize-soybean meal or barley-soybean meal diets. Archiv für Tierernährung 52: 15–27.
Nordic Committee on Food Analysis. 1991. Determination by atomic absorption spectrophotometry in foodstuffs. Metals, no. 139.
Nordic Committee on Food Analysis. 1998. Determination by atomic absorption spectrophotometry after wet digestion in a microwave oven. Metals, no. 161.
Nordic Committee on Food Analysis. 2003. Determination in foods and feeds according to Kjeldahl, fourth edition. Nitrogen, no. 6.
Peet-Schwering van der., C. M. C. and Hartog den., L. A. 2000. Manipulation of pig diets to minimize the environmental impact of pig production in the Netherlands. Nutrition Abstracts and Reviews. Series B, Livestock Feeds and Feeding 70: 913–917.
Pointillart, A. 1991. Enhancement of phosphorus utilization in growing pigs fed phytate-rich diets by using rye bran. Journal of Animal Science 69: 1109–1115.
Pointillart, A., Fontaine, N. and Tomasset, M. 1984. Phytate phosphorus utilization and intestinal phosphatases in pigs fed low phosphorus: wheat or corn diets. Nutrition Reports International 29: 473–483.
Pointillart, A., Fourdin, A. and Fontaine, N. 1987. Importance of cereal phytase activity for phytate phosphorus utilization by growing pigs fed diets containing triticale or corn. Journal of Nutrition 117: 907–913.
Poulsen, H. D. 1994. Reduceret fosfortildeling til slagtesvin: effekt pa produktion og fosforudnyttelse, Reduced dietary phosphorus for growing and. nishing pigs: effects on performance, retention and excretion. Forskningsrapport 28, pp. 1–29. Statens husdyrbrugsforsog, Forskningscenter Foulum, Tjele.
Poulsen, H. D. 2000. Phosphorus utilization and excretion in pig production. Journal of Environmental Quality 29: 24–27.
Poulsen, H. D., Jongbloed, A. W., Latimier, P. and Fernandez, J. A. 1999. Phosphorus consumption, utilisation and losses in pig production in France, The Netherlands and Denmark. Livestock Production Science 58: 251–259.
Reddy, N. R., Sathe, S. K. and Salunkhe, D. K. 1982. Phytates in legumes and cereals. Advances in Food Research 28: 1–92.
Sandberg, A. S., Larsen, T. and Sandstrom, B. 1993. High dietary calcium level decreases colonic phytate degradation in pigs fed a rapeseed diet. Journal of Nutrition 123: 559–566.
Simonsson, A. 1994. Näringsrekommendationer och fodermedelstabeller till svin. Swedish University of Agricultural Sciences Research Information. Husdjur, 71. SLU Info/Repro, Uppsala.
Skoglund, E., Carlsson, N. G. and Sandberg, A. S. 1997a. Determination of isomers of inositol mono- to hexaphosphates in selected foods and intestinal contents using high-performance ion chromatography. Journal of Agricultural and Food Chemistry 45: 431–436.
Skoglund, E., Larsen, T. and Sandberg, A. S. 1997b. Comparison between steeping and pelleting a mixed diet at different calcium levels on phytate degradation in pigs. Canadian Journal of Animal Science 77: 471–477.
Statistical Analysis Systems Institute. 1998. SAS/STAT users guide, version 8. 02. Statistical Analysis Systems Institute Inc., Cary, NC.
Teleni, E., Dean, H. and Murray, R. M. 1976. Some factors affecting the measurement of blood inorganic phosphorus in cattle. Australian Veterinary Journal 52: 529–533.
Underwood, E. J. and Suttle, N. F. 1999. The mineral nutrition of livestock, third edition. CABI Publishing, Oxon.