Market Broiler Management Practice Test

What weight range indicates when to start progressively increasing dark periods for broilers?

1. 50-100 grams

2. 100-160 grams

3. 150-200 grams

4. 200-250 grams

The correct answer is: 100-160 grams

The correct choice refers to the recommended weight range, which signifies the optimal time to start progressively increasing dark periods for broilers. At this stage, broilers are generally young and should still be receiving ample light to promote feed intake and growth. The weight range of 100-160 grams reflects a crucial period in the birds' development where their lighting conditions play a significant role in behavior and welfare. Increasing dark periods at this point enhances the birds' ability to rest and recover, which is essential for optimal growth. This practice helps to simulate natural light cycles, as even in the wild, birds experience variations in light and dark periods. Managing the photoperiod effectively can lead to improved feed efficiency, weight gain, and overall health, which are particularly important in broiler production as they contribute to market readiness. In contrast, initiating changes in light patterns at weights that are either too low or too high may not yield the same benefits. Starting too early, such as at weights under 100 grams, could hinder growth because the birds may need more light to maximize their feed intake. Conversely, starting to adjust dark periods at weights above this range might miss an optimal window for management strategies that support health and growth during the essential early stages.