Cowieson, AJ, Hruby, M & Pierson, EEM (2006) Evolving enzyme technology: impact on commercial poultry nutrition. Nutr Res Rev 19, 90–103.
Selle, PH & Ravindran, V (2007) Microbial phytase in poultry nutrition. Anim Feed Sci Technol 135, 1–41.
Selle, PH, Ravindran, V, Caldwell, RA & Bryden, WL (2000) Phytate and phytase: consequence for protein utilisation. Nutr Res Rev 13, 255–278.
Nyachoti, CM, de Lange, CFM, McBride, BW & Schulze, H (1997) Significance of endogenous gut protein losses in the nutrition of growing pigs. Can J Anim Sci 77, 149–163.
Cowieson, AJ, Acamovic, T & Bedford, MR (2004) The effects of phytase and phytic acid on the loss of endogenous amino acids and minerals from broiler chickens. Br Poult Sci 45, 101–108.
Ravindran, V, Hew, LI, Ravindran, V & Bryden, WL (1999) A comparison of ileal digesta and excreta analysis for the determination of amino acid digestibility in feed ingredients for poultry. Br Poult Sci 40, 266–274.
Ravindran, V & Bryden, WL (1999) Amino acid availability in poultry – in vitro and in vivo measurements. Aust J Agric Res 50, 889–908.
Moughan, PJ, Darragh, AJ, Smith, WC & Butts, CA (1990) Perchloric and trichloraacetic acids as precipitants of protein in endogenous ileal digesta from the rat. J Sci Food Agric 52, 13–21.
Ravindran, V & Hendriks, WH (2004) Recovery and composition of endogenous protein collected at the terminal ileum as influenced by the age of broiler chickens. Aust J Agric Res 55, 705–709.
Ravindran, V, Hew, LI, Ravindran, G & Bryden, WL (2004) Endogenous amino acid flow in the avian ileum: quantification using three techniques. Br J Nutr 92, 217–223.
Association of Official Analytical Chemists (1994) Official Methods of Analysis, 16th ed. Washington, DC: Association of Official Analytical Chemists.
Sweeney, RA (1989) Generic combustion method for determination of crude protein in feeds: collaborative study. J Assoc Off Anal Chem 72, 770–774.
Short, FJ, Gorton, P, Wiseman, J & Boorman, KN (1996) Determination of titanium oxide added as an inert marker in chicken digestibility studies. Anim Feed Sci Technol 59, 215–221.
Engelen, AJ, van der Heeft, FC, Ransdorp, PHG, Somers, WAC, Schaefer, J & van der Vat, JC (2001) Determination of phytase activity in feed by a colorimetric enzymatic method: collaborative interlaboratory study. J AOAC Int 84, 629–633.
Moughan, PJ, Schuttert, G & Leenaars, M (1992) Endogenous amino acid flow in the stomach and small intestine of the young growing pig. J Sci Food Agric 60, 437–442.
Onyango, EM, Asem, EK, Sands, JS & Adeola, O (2004) Dietary phytates increase endogenous losses in ducks and chickens. Poult Sci 83, Suppl. 1, 149–150.
Smirnov, A, Sklan, D & Uni, Z (2004) Mucin dynamics in the chick small intestine are altered during starvation. J Nutr 134, 736–742.
Cowieson, AJ, Acamovic, T & Bedford, MR (2006) Using the precision-feeding bioassay to determine the efficacy of exogenous enzymes – a new perspective. Anim Feed Sci Technol 129, 149–158.
Forstner, JF & Forstner, GG (1994) Gastrointestinal mucus. In Physiology of the Gastrointestinal Tract, 3rd ed., pp. 1255–1283 [Johnson, LR, editor]. New York: Raven Press.
Buonocore, V, Deponte, R, Gramenzi, F, Petrucci, T, Poerio, E & Salino, V (1977) Purification and properties of alpha-amylase from chicken (Gallus gallus L.) pancreas. Mol Cell Biochem 17, 11–16.
Knuckles, BE & Betschart, AA (1987) Effect of phytate and other myo-inositol phosphate esters on alpha-amylase digestion of starch. J Food Sci 52, 719–721.
Cowieson, AJ, Acamovic, T & Bedford, MR (2004) The effect of phytic acid and phytase on the digestibility of maize starch for growing broiler chickens. In Proceedings of the International Poultry Science Forum, p. 31. Poultry Science Association (Southern Section), Atlanta, GA.
Cowieson, AJ, Acamovic, T & Bedford, MR (2006) Supplementation of corn/soy-based diets with an Escherichia coli-derived phytase: effects on broiler chick performance and the digestibility of amino acids and the metabolisability of minerals and energy. Poult Sci 85, 1389–1397.
Ravindran, V, Morel, PCH, Partridge, GG, Hruby, M & Sands, JS (2006) Influence of an E. coli-derived phytase on nutrient utilization in broiler starter fed diets containing varying concentrations of phytic acid. Poult Sci 85, 82–89.
Selle, PH, Ravindran, V, Bryden, WL & Scott, TA (2006) Influence of dietary phytate and exogenous phytase on amino acid digestibility in poultry: a review. J Poult Sci 43, 89–103.
Moughan, PJ, Souffrant, WB & Hodgkinson, SM (1998) Physiological approaches to determining gut endogenous amino acid flows in the mammal. Arch Anim Nutr 51, 237–252.