Mycoplasma gallisepticum (MG) is associated with chronic respiratory disease in chickens and infectious sinusitis in turkeys. The symptoms generally seen are coryza, coughing, nasal exudate and respiratory rales. Economic losses due to M. gallisepticum infection include reduced egg production, poor eggshell quality, lowered hatchability of chicks and downgraded meat quality.
Mycoplasma synoviae (MS) is a known pathogen associated with the development of synovitis and chronic respiratory disease in chickens and turkeys. Clinical symptoms include joint swelling, coryza and respiratory rales. Economic losses due to M. synoviae infection include reduced egg production, lowered hatchability of chicks and downgraded meat quality.