Contents: 1. Introduction. 2. Bacterial diseases. 3. Mycoplasmal diseases. 4. Viral diseases. 5. Chlamydial diseases. 6. Prion diseases. 7. Rickettsial diseases. 8. Fungal diseases. 9. Protozoaval diseases. 10. Parasitic diseases. 11. Importance of vaccination in preventive health management program of farm animals.
