Market Broiler Management Practice Test

What is the minimum number of hours of darkness required before slaughter weight reaches 2.5 kg?

1. 4

2. 5

3. 6

4. 7

The correct answer is: 6

The correct answer is based on the understanding of light exposure and its impact on the growth and development of broilers. For broilers, managing the light-dark cycle is crucial for achieving optimal growth rates. Research has shown that providing a minimum number of hours of darkness (around 6 hours) is essential to stimulate natural behaviors, reduce stress, and facilitate better weight gain before slaughter. In this context, the number of hours of darkness helps ensure that the birds have adequate rest, which is vital for their overall health and growth. Without sufficient darkness, birds may experience disruptions in their natural circadian rhythms, leading to increased stress and potentially lower weight gain. The other options, while they may indicate varying amounts of darkness, do not align with the minimum requirement identified in poultry management practices for reaching the desired weight of 2.5 kg efficiently. Hence, 6 hours is recognized as the standard for promoting optimal growth conditions leading up to slaughter.