The Alicar database gathers published data on performance and carcass composition of ruminants as influenced by dietary conditions. It was developed with the Merise Method. The environment is APACHE, MySQL and PHP. The relational model of Alicar counts 11 tables: publication, experiment, animal group, treatment, measurement-results, methods, feeds, ingredient composition and ration intake, feed chemical composition, INRA feed specific code and meta-analysis code. Animals, feeding conditions and methods are finely described. Currently, Alicar includes 111 publications in cattle (794 treatments). Cattle data cover a range of animal maturing rates (mainly intermediate and early), and production types (mainly meat and dual purpose). Carcass composition is from chemical or physical measurements, and/or proxy traits.