What factors can affect egg production in layers?

The factors that influence egg production in layers encompass a combination of environmental, nutritional, and health considerations, making the chosen option particularly valid.

Light is essential for stimulating reproductive functions in laying hens, as it influences their hormonal cycles. Proper light exposure impacts the timing and quality of egg-laying.

Nutrition plays a crucial role because hens require a balanced diet with the right proportions of protein, vitamins, and minerals to support optimal egg production. Poor nutrition can directly lead to reduced egg yield and lower egg quality.

Health is another vital factor, as the overall well-being of the birds significantly influences their productivity. Disease or stress can detract from a hen's capacity to lay eggs.

These three elements—light, nutrition, and health—work together synergistically to maximize the potential of layers in egg production. Understanding and managing these factors can lead to increased productivity and healthier flocks. The other options also include relevant factors but do not encompass the primary and most impactful aspects as comprehensively as this choice.