Chronic respiratory disease of poultry in Western Australia

Widespread chronic respiratory disease was revealed in a survey of respiratory infections in Perth metropolitan area poultry flocks. Most occur in early or midsummer and cause a serious fall in egg production. Return to full lay after the infection is usually slow. While these infections can cause production losses in flocks which are under heavy stress, none of the more serious forms of chronic respiratory disease was found. This gives encouragement for future control of the disease in Western Australia