Why the First 14 Days Matter Most
The brooding period sets the trajectory for the entire flock. Chicks that start well — with correct temperature, immediate feed and water access, and proper lighting — reach target weights faster, convert feed more efficiently, and have lower mortality. A poor start, on the other hand, creates problems that compound through the grow-out cycle and show up at settlement.
Research consistently shows that broiler weight at day 7 is a strong predictor of final body weight. Chicks that fall behind in the first week rarely catch up completely. Every hour of delayed feed access after placement reduces growth, and every degree of incorrect brooding temperature stresses the birds' developing immune and digestive systems.
Pre-Placement Preparation
Before chicks arrive, the brooding area must be ready. Key preparation steps include pre-heating the house to the correct floor-level temperature 24–48 hours before placement, ensuring feed trays or paper are in place and filled with fresh starter feed, checking that drinkers are clean and functioning at the correct height and pressure, verifying that ventilation systems are calibrated for minimum ventilation, and confirming that backup generators and alarm systems are operational.
A pre-placement checklist ensures nothing is missed during the busy period before chick arrival. Growers who use a structured preparation process consistently report better first-week livability and more uniform flock starts.
Brooding Temperature Management
Target floor-level temperature for the first three days is 90–95°F (32–35°C). After day 3, reduce temperature by approximately 5°F per week until reaching 70–75°F (21–24°C) by week 3. These targets are guidelines — chick behavior is the true indicator of whether temperature is correct.
Well-distributed chicks that are eating, drinking, and resting comfortably indicate correct temperature. Chicks huddling together under the heat source are too cold. Chicks panting, spreading away from heat, or moving to the walls are too hot. Observing chick distribution multiple times during the first 48 hours helps catch temperature problems before they affect performance.
Temperature should be measured at chick level, not at human eye level. The temperature at floor level where chicks live can be 5–10°F different from the temperature at thermostat height. Using multiple sensors placed at floor level across the brooding area provides accurate readings.
Feed and Water Access
Chicks must find feed and water within their first few hours in the house. Place feed on paper or in shallow trays covering at least 50–75% of the brooding area for the first 3–4 days. Supplement feed trays with the main feeder lines lowered to chick height. Use supplemental drinkers (mini-drinkers or bell drinkers) alongside nipple lines for the first few days to ensure all chicks can find water.
Water temperature matters more than many growers realize. Chicks prefer water at 65–75°F (18–24°C). Water that is too cold reduces intake; water that is too warm discourages drinking and can promote bacterial growth. Flush drinker lines before placement to ensure fresh, cool water is available from the start.
Brooding Nutrition
Starter feed should be offered immediately. A high-quality crumble or mini-pellet starter with 21–23% protein and adequate amino acid levels supports rapid early growth. Some operations use a pre-starter for days 0–7 with higher nutrient density and more digestible ingredients to give chicks the strongest possible start.
Feed consumption in the first 48 hours should be monitored closely. Chicks that are not eating within 8–12 hours of placement need investigation — the cause may be temperature, water availability, feed quality, or health issues. Tracking feed disappearance and adjusting management accordingly prevents small problems from becoming big ones.
Lighting Programs for Brooding
Lighting during brooding should be bright (20–40 lux) for the first 3–7 days to help chicks find feed and water. After the first week, reduce intensity to 5–10 lux and introduce a dark period of 4–6 hours. The dark period is important for leg health, reducing metabolic disorders, and allowing birds to rest. Sudden darkness should be avoided — use a gradual dimming period to prevent panic and piling.
Tracking Brooding Performance
First-week mortality target is under 1.5%. Tracking daily mortality by suspected cause helps identify patterns — if most losses are from starve-outs (empty crops), feed access is the problem. If mortality is from dehydration, water access is the problem. If mortality spikes coincide with temperature fluctuations, environmental control needs adjustment.
Documenting brooding conditions — temperature readings, feed consumption, water intake, lighting settings, and mortality — creates a valuable record for comparing across flocks. Growers who track brooding data can identify which management practices consistently produce the best starts and replicate them flock after flock.