A comprehensive French‑language guide covering the diagnosis, treatment, and prevention of diseases affecting cattle. Drawing on the expertise of the Institut de l’Élevage, the manual presents practical information for veterinarians, livestock managers, and students of animal health. Topics include common bacterial, viral, and parasitic infections, herd health monitoring, biosecurity measures, and recommended therapeutic protocols. Illustrated with clear diagrams and tables, the work serves as a reference for day‑to‑day veterinary practice and for developing preventive health programs on farms.