Short notes on Chronic Respiratory Disease (CRD) in Poultry

CRD is a specific disease caused by one of the group of organisms known as pleuro pneumonia like organism (PPLO), but more closely defined is Mycoplasma; the particular organism directly associated with CRD is Mycoplasma gallisepticum with or without secondary complications. The mortality entirely to CRD is negligible, but it is important because it predisposes the birds to infection for other disease producing organisms. Transmission: M......