Why is a uniform feed intake and constant feed particle size distribution critical to prevent the "laying of small eggs" in brown layers?

To maintain a high percentage of lucrative "large" and "extra-large" brown eggs, a laying flock must achieve high body-weight uniformity (over 85% CV). A major barrier to uniformity is feed particle size separation in mash feeds. If a feed mill produces mash with a highly variable particle distribution (a mix of coarse corn, medium soy, and extremely fine vitamin-mineral powder), the feed will separate in the delivery lines and feeders. Dominant hens will selectively peck the large, coarse corn particles (getting excess energy but low protein and minerals), while submissive hens are forced to eat the leftover dusty fines (getting high minerals but low energy). This selective feeding leads to severe nutritional imbalances, causing some birds to become obese with fatty livers, while others become underweight and stunted. The underweight birds are physically unable to synthesize sufficient egg yolk proteins, leading to a high percentage of small, underweight eggs. Producing a highly uniform mash (particle size 900 to 1100 microns) or high-quality crumbles prevents separation and ensures consistent egg weights. Farmers can read feed milling engineering in the Poultry Encyclopedia, buy high-precision hammer mills and mixers on Poultry Plaza, monitor daily grain rates on Poultry Rates, and trade on Murghi Mandi.