Professor Richard Dewhurst: expertise in ruminant nutrition and production systems with significant contributions at the interfaces between nutrition, product composition and rumen function - notably modelling of forage composition, dry cow feeding strategies, forages and fatty acids, fatty acids and fertility, and rumen diagnostics. Some work has been used directly by the animal feed industry – notably feed evaluation systems, feed values and feeding strategies. Much more work has been used by farmers and advisers – notably to develop advice and models to predict and increase forage intakes, improve the utilisation of feed protein, improve milk composition, and facilitate the use of forage legumes in conventional and organic farming. Current research is developing markers/proxies for digestive efficiency, feed efficiency and greenhouse gas emissions by ruminants – including through the use of gene-centric and 16S-based rumen metagenomics, as well as exploring methane emissions from fresh herbage.