The present and future for herbivores. Role of herbivores in sustainable land production systems. Principles and practices - some of the issues. Role of herbivores in functions in which economic value is difficult to quantify. Changes in the nutrition and management of herbivores in the temperate zone: economic and social influences. Role of products market competition, non market functions and agricultural policies in animal and herbivore production prospects in France. Quantification of herbivore nutrition. Control and prediction of feed intake in ruminants. Herbage intake at grazing: a modelling approach. Optimisation of ruminal digestion: a modelling approach. Dietary compounds escaping rumen digestion. Prediction of the energy and protein value of forages for ruminants. Adaption of herbivores to environment. Comparison of herbivore forage selection and digestion. Improving the digestion of plant cell walls and fibrous feeds. Improving the feeding and health value of ensiled forages. Comparative adaptability of herbivores to tropical environments. Digestive and metabolic adaptations of ruminants to variations in food supply. Extensive herbivore nutrition. Optimisation of grass utilisation in high rainfall temperate conditions. Advances in the use of faecal and urinary markers for measuring diet composition, herbage intake and nutrient utilisation in herbivores. Dietary selection and foraging strategies of animals on rangeland. Coping with spatial and temporal variability. improved utilization of heterogeneous pastures by mixed species. Plant toxins and mammalian herbivores: co-evolutionary relationships and antinutritional effects. Feeding and management: high forage systems. High forage systems for the growing beef cattle: concepts and principles. The use of forages by the beef cow herd. High forage use in sustainable dairy systems. Grassland farm systems for sheep production. Feeding systems for draught ruminants on high forage diets in some African and Asian countries. Feeding systems for horses on high forage diets in the temperate zone. Final report. Future areas of research and expected advances in the nutrition of herbivores.