On Day 31, the flock officially crosses the 2.0kg live-weight milestone (~2,025g expected weight). Daily biomass in the house reaches maximum density, and a flock of 10,000 birds excretes over 3,000 liters of water daily through respiration and droppings. Litter management becomes critical: moist, compacted litter rapidly releases ammonia, causing painful footpad dermatitis (pododermatitis), hock burns, and breast blisters that degrade carcass grade at harvest. Farmers must adjust drinker lines to precise 45° neck extension and aerate litter daily.
Footpad ulcers and hock burns are severe animal welfare defects that cause birds to sit, reducing feed and water access. At processing, severe footpad lesions and breast blisters lead to carcass downgrades, weight loss, and financial penalties.
•Leaving drinker lines too low for heavy birds, causing them to drink from a bent posture and spill up to 20% of water onto litter.
•Allowing litter cake to accumulate under the assumption that harvest is too close to matter.
•Over-ventilating with cold air at night causing condensation on the litter surface.
•Ignoring drinker pressure increases as birds consume more volume, leading to leaking nipples.
•Footpad dermatitis (FPD) is primarily an environmental chemical burn caused by moisture and ammonia in the litter, not an infectious disease. However, broken skin allows secondary Staphylococcus and E. coli infections into joints (bacterial chondronecrosis).
•Veterinary escalation trigger: If more than 5% of birds exhibit purulent hock swelling, lameness, or severe ulcerated footpads, immediately schedule a veterinary farm inspection for bacterial culturing and pain management.
•The Squeeze Test: Grab a handful of litter and squeeze firmly. If it forms a muddy ball and wets your palm, it is >30% moisture and must be replaced. If it crumbles loosely upon opening your hand, it is in the ideal 20-25% range.
•Never rototill or deeply churn wet capped litter into dry base litter in a heavy bird house. Remove the top cake completely and lay down dry fresh bedding.
At 2.0kg, each broiler excretes roughly 150-180g of manure daily containing up to 80% water. High stocking biomass concentrates this moisture rapidly, demanding aggressive ventilation and diligent drinker line management.
Low drinkers cause birds to bump pins with their shoulders, dripping water onto the floor. Birds then sit on this wet, ammonia-rich litter, which chemically burns their hocks and breast skin.
