Baquiloprim is primarily used in veterinary medicine as an antibacterial agent. It is often combined with sulfadiazine to enhance its effectiveness against a broad spectrum of bacterial infections in animals. This combination is particularly effective in treating respiratory and gastrointestinal infections in livestock, such as cattle and pigs. Baquiloprim works by inhibiting the enzyme dihydrofolate reductase, which is crucial for bacterial DNA synthesis, thereby stopping the growth and proliferation of bacteria. Its application helps in maintaining animal health, improving productivity, and preventing the spread of infectious diseases within herds.