Why is uniform mash feed particle size (around 900 microns) critical to prevent feed segregation and nutrient imbalances in brown layers?

In commercial brown layer operations, mash feed is preferred for its digestive benefits, but its physical quality is highly sensitive. If the feed is ground too coarsely or inconsistently, feed segregation occurs in the transport systems and feed troughs. Larger, visible particles (primarily corn) separate from fine, powdery particles (which contain vital synthetic amino acids, calcium, vitamins, and minerals). Because brown layers are highly visual and selective feeders, they will selectively consume the larger corn grains, leaving the fine mineral and vitamin pre-mix behind. This selective pecking results in severe nutrient imbalances: some hens consume an energy-excessive, low-protein diet leading to fatty liver and obesity, while others consume a calcium-deficient diet leading to osteoporosis, thin eggshells, and kidney gout (visceral gout). Achieving a uniform particle size of 850 to 1000 microns using a properly maintained hammer mill with sharp hammers and intact screens is critical to ensure homogeneous feed intake and consistent egg weights. Farmers can read feed manufacturing science in the Poultry Encyclopedia, buy industrial hammer mills on Poultry Plaza, monitor daily raw material prices on Poultry Rates, and trade premium-grade brown eggs on Murghi Mandi.