Market Broiler Management Practice Test

What is the recommended air draw velocity through the house when using tunnel ventilation?

1. 1.50 m/s

2. 2.00 m/s

3. 2.50 m/s

4. 3.00 m/s

The correct answer is: 3.00 m/s

The recommended air draw velocity for tunnel ventilation in poultry houses is typically around 3.00 m/s. This velocity is considered optimal for maintaining adequate airflow, which is crucial for temperature control and the overall health of broilers. Proper ventilation helps manage heat and humidity levels, reduces the buildup of harmful gases, and ensures an even distribution of fresh air throughout the barn. Tunnel ventilation relies on creating a strong air movement through the length of the facility, and a velocity of 3.00 m/s is effective in achieving the necessary cooling effect, especially during hot weather. This speed ensures that air moves swiftly across the birds, helping to maintain their comfort and promoting better growth rates and feed conversion efficiencies. Lower velocities, such as those found in other choices, might not provide sufficient air exchange in high-density production systems, potentially leading to inadequate cooling and increased stress on the birds. Maintaining the recommended air draw velocity is critical for effective environmental control in broiler houses.