Market Broiler Management Practice Test

Minimum ventilation in broiler houses should be employed up to what age to prevent chilling?

1. 7 days

2. 14 days

3. 21 days

4. 28 days

The correct answer is: 14 days

Minimum ventilation in broiler houses is crucial in maintaining an optimal environment for young birds, particularly to prevent chilling during the early stages of their development. When broiler chicks are first introduced to their housing, they are especially vulnerable to temperature fluctuations, as they are unable to effectively regulate their body temperature. The correct age up to which minimum ventilation should be practiced is 14 days, as this is the period when chicks are still gaining the ability to maintain their body heat. During the first week, they rely heavily on supplemental heat, and excessive ventilation can cause heat loss, leading to stress and potentially increased mortality. After about 14 days, the chicks start to develop feathers and improve their thermoregulatory abilities, allowing for more normal ventilation practices without the risk of chilling. The age window chosen reflects the importance of maintaining a stable, warm environment during this critical growth phase while gradually transitioning to standard ventilation practices as the birds mature.