Poultry Science Symposium Series -- CONTRIBUTORS -- PREFACE -- PART I Present and future supply of feedstuffs -- CHAPTER 1 Agronomic and political factors influencing feedstuff use -- CHAPTER 2 The assessment of the economic value of output traits genetically engineered into crops used in animal feed -- PART II Nutritional components of feedstuffs: qualitative chemistry -- CHAPTER 3 Carbohydrate chemistry of the feedstuffs used for poultry -- CHAPTER 4 Nutritional components of feedstuffs: a qualitative chemical appraisal of protein -- CHAPTER 5 An appraisal of fats and fatty acids -- CHAPTER 6 An appraisal of trace elements: inorganic and organic -- PART III Feedstuff quality: quantitative assessment -- CHAPTER 7 Digestive processes in poultry from a physiological viewpoint -- CHAPTER 8 Digestibility and bioavailability of protein and amino acids -- CHAPTER 9 The quantitative contribution of fat to metabolizable energy -- CHAPTER 10 The availability of calcium and phosphorus in feedstuffs -- CHAPTER 11 Vitamins in feedstuffs -- CHAPTER 12 Energy utilization: measurement and prediction -- PART IV Factors influencing nutritive value -- CHAPTER 13 Non-starch polysaccharides: effect on nutritive value -- CHAPTER 14 Secondary plant metabolites in poultry nutrition -- CHAPTER 15 Visual and tactile cues perceived by chickens -- CHAPTER 16 Effects of physical processing on the nutritive value of poultry diets -- PART V Dietary enzymes -- CHAPTER 17 The role of carbohydrases in feedstuff digestion -- CHAPTER 18 The Influence of lipase, -galactosidase or multi-component pectinase enzymes on energy and amino acid availability in feedstuffs -- CHAPTER 19 Recent trends and future developments in the use of feed enzymes in poultry nutrition -- CHAPTER 20 The effects of phytase in poultry nutrition -- CHAPTER 21 The scientific challenges ahead.

PART VI Poster abstracts -- POSTER 1 Variation in lysine excretion among birds in the precision-fed rooster bioassay for digestible amino acids -- POSTER 2 The influence of phytase on amino acid digestibility in broiler diets -- POSTER 3 Protein and fat deposition in carcass and organs of young broiler chicks: response to energy and amino acid intake -- POSTER 4 Effect of the exclusion of synthetic amino acids and potentially GMOcontaining protein sources in vegetable layer diets -- POSTER 5 Relative egg yolk pigmenting efficiency of apo-ester versus marigold xanthophylls -- POSTER 6 Regression analysis to assess the bioefficacy of different methionine sources in broiler chickens -- POSTER 7 The MEN value of wheat cultivars in relation to their chemical and physical parameters -- POSTER 8 Effects of method and level of inclusion of feed on performance of broilers given a low-AME wheat diet -- POSTER 9 Effects of heat processing on feed enzymes and on diet characteristics and subsequent broiler performance -- POSTER 10 Is development of pecking damage in layer pullets influenced by dietary protein source? -- POSTER 11 Nutritive values of certain agroforestry products for poultry -- POSTER 12 Amino acid contents of common poultry ingredients of Western India -- POSTER 13 Influence of polyenzymes on energy and amino acid utilization from Indian feedstuffs by broilers -- POSTER 14 Effect of methods of analysis and heat treatment on viscosity of wheat, barley and oats -- POSTER 15 Effects of inorganic phosphates on the quality of eggs and performance in two strains of laying hen -- POSTER 16 Digestible valine requirement of female Nicholas poults during the period 0-4 weeks post-hatching -- INDEX.