Market Broiler Management Practice Test

Which broiler management practice can improve the bird's immune response?

1. Prolonged exposure to cold

2. Regular feed changes

3. Consistent lighting schedules

4. High stocking density

The correct answer is: Consistent lighting schedules

Consistent lighting schedules are crucial in broiler management as they significantly influence the birds' immune response and overall health. Lighting programs can affect the behavioral patterns of the broilers, including their feeding, activity, and rest cycles. A stable lighting schedule helps reduce stress, which is critical for maintaining a robust immune system. When birds are subjected to erratic or stressful lighting conditions, it can lead to increased cortisol levels, which may suppress immune functions. In contrast, practices such as prolonged exposure to cold can lead to increased stress and susceptibility to diseases, potentially weakening the immune response. Regular feed changes, while important for nutritional management, can disrupt the digestive system and acclimatization of birds, which could negatively affect their immune status. High stocking density is generally associated with increased competition for resources and greater stress levels, both of which can impair the immune system's effectiveness. Thus, maintaining consistent lighting schedules stands out as a practice that directly supports and improves the birds' immune response.