This document discusses biosecurity measures in poultry farms. It recommends removing organic material from the farm environment through cleaning and scrubbing. It emphasizes the importance of manure pit wind direction and removing webs in corners and roofs. For disinfection, it recommends killing pathogenic microbes using chemicals like iodine, chlorine, and alcohol. It provides procedures for cleaning and disinfecting equipment and housing. It discusses sources of infection like air, water, feed, litter and people. It recommends biosecurity measures like fencing, disinfecting staff and vehicles, restricting movement, and controlling personnel and poultry stock to prevent disease transmission in poultry farms.