Also known as airsacculitis and MG (mycoplasma gallisepticum), CRD affects the entire
respiratory tract including the air sacs. The disease is important, not by itself, but because it
attracts secondary invading organisms such as E. Coli.
Stress conditions (moving birds, debeaking, cold or poor ventilation) increase birds’ susceptibility. Mortality is usually low and economic losses are due to reduced body weight and poor
feed conversion.
Health Considerations continued
CAUSE OF CRD
CRD is due to Mycoplasma gallisepticum and the condition is frequently triggered by respiratory
viruses (IBV and NDV) and bacteria that have an affinity for the respiratory tract.
Other factors such as nutritional deficiency, high ammonia levels and dust contribute to the
severity of the disease.
SIGNS OF CRD
• Respiratory distress; coughing and sneezing
• Snicks, rales, sometimes with eye and nasal discharge
• Decreased feed intake, body weight, and poor feed conversion
TREATMENT of CRD
- Neo-Chlor Plus
- Menorox®
- Neo-Oxytetracycline.
PREVENTION
• Good management and sanitation must be the daily practice in the event of infection
• Avoid high ammonia levels, dust, overcrowding, and poor ventilation
• Remove infected flocks; then clean, disinfect, and rest house for 3-4 weeks before restocking.