Active healthy birds Sick broiler bird Sick pullet Effective health management is an important aspect of poultry production. The best fed and housed stock with the best genetic potential will not grow and produce efficiently if they become diseased or infested with parasites. . Infectious disease causing organisms will spread very quickly through a flock because of the usual high stocking densities of commercially housed poultry. effective poultry health management primarily aims at: 1. Preventing the onset of disease or parasites. 2. Recognising at an early stage the presence of disease or parasites, and 3.Treating all flocks that are diseased or infested with parasites as soon as possible and before they develop into a serious condition or spread to other flocks. To be able to do this it is imperative to know how to identify that; i.The birds are diseased, ii. The action required for preventing or minimising disease and iii. How to monitor for signs