Respiratory diseases can seriously affect the health, productivity, and welfare of layer flocks. This comprehensive guide explains how the chicken respiratory system works, the signs and impacts of disease, and details the major respiratory conditions affecting New Zealand flocks – from Infectious Bronchitis and Mycoplasma to Fowl Cholera and Avian Influenza. While the information has a New Zealand focus, the issues, risk factors, and prevention measures are relevant to poultry producers everywhere. It covers how each disease is introduced and spreads, the role of environmental factors like ammonia and ventilation, and the importance of nutrition, biosecurity, and vaccination. Practical advice is included to help farmers prevent outbreaks and respond quickly when problems occur.
