Combating Heat Stress

Heat stress is a significant challenge for poultry farmers, especially in hot climates. Modern laying hens have the potential to produce up to 500 eggs in 100 weeks under optimal conditions. However, in open houses without proper ventilation, achieving these results becomes difficult. Maintaining a good microclimate is essential for the health and productivity of hens.

The ideal temperature range for commercial layers is between 18-24oC, and effective temperature also depends on humidity and airspeed. When hens experience heat stress, indicated by panting or gasping, their feed intake decreases, water intake increases, and there are drops in egg production and quality. Additionally, heat stress can lead to immunosuppression and increased mortality.

To mitigate heat stress without significant investment, consider the following measures:

• Orient barns along the east-west axis to minimize direct sunlight on walls.
• Insulate roofs to reduce heat transfer.
• Install sprinklers at the roof apex.
• Use shade cloth and plant trees for natural shading.
• Maintain a stocking density of 6-7 birds per square meter.
• Increase surface area per bird with perches.
• Ensure a plentiful supply of clean, cool water.
• Implement midnight feeding to support hens during the coolest part of the night.

For tailored advice on implementing these strategies, consult our experts.