![]() Infection with Mycoplasma gallisepticum is associated with slow onset, chronic respiratory disease in chickens, turkeys, game birds, pigeons and other wild birds.Īccording to Paul McMullin in his Pocket Guide to Poultry Health and Disease, the condition occurs worldwide, though in some countries this infection is now rare in commercial poultry. Mycoplasma gallisepticum adversely affects fertility, hatchability, and survival of baby chicks and it will spread easily to other flocks on the farm, to nearby farms and to other birds including wild birds. Once other complicating factors - such as environmental issues including a rise in temperature, ammonia levels or dust or cold drafts, problems with nutrition and other infections, such as infectious bronchitis or laryngotracheitis virus - Mycoplasma gallisepticum can flare up. It is a slow spreading infection and often infected birds remain healthy without showing any signs of the disease. Mycoplasma gallisepticum is considered to be the most problematic of the poultry mycoplasmal diseases. This has led to research investigating their use in combination with a subsequent overlay vaccination of F-strain Mycoplasma gallisepticum given later in the production cycle. ![]() Live strains of Mycoplasma gallisepticum of lesser virulence as well as killed vaccines have little or no effect on egg production, but afford lower levels of protection. ![]() However, they may exert some adverse effects on egg production.
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