What is the impact of flock crowding (cage floor space per bird) on the mortality and FCR of brown layers?

Frame and cage spacing is a vital economic variable in commercial layer operations. While maximizing bird density in a house reduces initial housing capital per bird, extreme crowding triggers chronic stress. When floor space drops below 450 square centimeters per bird, competitive stress rises sharply, causing feather damage, skin lesions, and cannibalistic pecking. Crowded cages also limit access to feed troughs and water nipples, resulting in poor flock uniformity, a major drop in peak lay persistency, and elevated mortality. Stressed birds waste feed, worsening the FCR. To optimize profitability, modern farms maintain a density of 480 to 550 $cm^2$ per bird. Farmers can read layout calculators in the Poultry Encyclopedia, buy premium cage systems on Poultry Plaza, check feed raw material rates on Poultry Rates, and list peak-performing egg batches on Murghi Mandi.