Market Broiler Management Practice Test

What is the maximum stocking density for a solid walled, tunnel ventilated broiler house equipped with evaporative cooling?

1. 35 kg/m2

2. 42 kg/m2

3. 50 kg/m2

4. 60 kg/m2

The correct answer is: 42 kg/m2

The maximum stocking density of 42 kg/m² for a solid-walled, tunnel-ventilated broiler house equipped with evaporative cooling is based on several key factors related to broiler welfare, health, and performance, as well as environmental conditions within the housing system. Tunnel ventilation is a type of airflow that enhances air movement and helps regulate temperature and humidity inside the broiler house. It is particularly effective in managing heat stress and maintaining air quality, which are critical aspects for broiler production. Evaporative cooling systems further assist in controlling temperature by reducing heat through water evaporation, allowing for increased animal density without compromising growth rates or increasing mortality. The 42 kg/m² limit reflects a balance between optimizing floor space usage and ensuring that the birds have enough room to exhibit natural behaviors, access feed and water, and maintain good health. Dense stocking can lead to higher stress levels, increased competition for resources, and greater susceptibility to disease if proper management practices are not in place. Higher densities, like 50 kg/m² or 60 kg/m², could jeopardize the welfare of the birds, as the environment may become overcrowded, leading to issues such as reduced air quality, increased ammonia levels, and greater stress among the flock.