The Live Stock Health Ontology (LHO), an extension of the DECIDE ontology following OBO Foundry guidelines, serves as a structured framework for organizing information related to the health and well-being of livestock species, encompassing cattle, poultry, pig, and salmon. LHO facilitates the integration of domain knowledge and data, offering explicit representations of various aspects. In the development process, insights from domain experts contribute to the creation of a prototype designed for reasoning and planning of data, particularly concerning cattle. Within LHO, concepts include farms with identifications, samples, geolocation, breed, diagnostic tests, and pathogen identifications. Notably, specific bacteria like Histophilus somni (HS), Mannheimia haemolytica (MH), Pasteurella multocida (PM), Bovine coronavirus (BCV), bacterial mycoplasma, and aerobic culture results for the respiratory tract in cattle are covered. For pigs, additional details encompass FarmType, age, weight-related information, and pathogen names such as Porcine Reproductive and Respiratory Syndrome (PRRS), Swine Infuenza(SI), and Mycoplasma hyopneumoniae are included. This enhanced representation facilitates a comprehensive understanding of pig health, covering aspects of farm classification, age or weight specifics, and the presence of specific pathogens. Similarly, for poultry, LHO incorporates FarmType along with specific pathogen names like Infectious Bronchitis (IB), offering a detailed perspective on poultry health, including farm categorization and information on prevalent diseases.