Cobb500 Broiler Farm Management Checklist
™
Daily essentials for 0–35 day old broilers
Remember the 5
Brooding Principles
Day-of-Hatch
 Follow Cobb’s Five Brooding
Principles
 Standard as hatched target
weight of 42g
 32-34°C ambient temp,
depending on RH%, parent
age and cloaca temperature
7 days
14 days
21 days
28 days
35 days
 Aim to achieve minimum
growth ratio of x 4.6
placement weight
 Aim to achieve minimum
growth ratio of x 2.74
7-day weight
 Aim to achieve minimum
growth ratio of x 1.93
14-day weight
 Aim to achieve minimum
growth ratio of x 1.59
21-day weight
 Aim to achieve minimum
growth ratio of x 1.41
28-day weight
 Standard as hatched target
weight of 193g
 Standard as hatched target
weight of 528g
 Standard as hatched target
weight of 1,018g
 Standard as hatched target
weight of 1,615g
 Standard as hatched weight
of 2,273g
 30°C ambient temperature
guideline
 27°C ambient temperature
guideline
 24°C ambient temperature
guideline
 21°C ambient temperature
guideline
 19°C ambient temperature
guideline
Daily Records
Weekly Checks
• Adjust nipple heights: Birds should
stretch to drink but keep their feet flat
on the floor
• Mortality and culls: Record quantity of dead
(mortality) and culled (euthanized) birds per
house
• Increase water flow through nipple on each drinker
line
• Adjust feeder heights as necessary,
minimizing spillages
• Record ambient conditions: temperature
(maximum & minimum) and relative humidity
• Record the average weight
• Remove fallen stock and cull where
necessary
• Monitor litter moisture and maintain at
30-35%
• Water consumption ideally in ml/bird
• Reduce ambient temperature daily:
Day 1–28: 0.4-0.5°C per day
Day 29–35: 0.2-0.3°C per day
• Carbon Dioxide in parts per million
• Minimum ventilation programme
• Test alarms and verify controller
settings daily
• Record vaccinations/medications in the farm’s
log/medicine book
• Increase minimum ventilation daily
• Monitor feed silos, ensuring sufficient
feed until next delivery
Daily Checks
• Ensure good biosecurity at all times
• Throughout the day, inspect each
house. Observe bird activity, check
feed/ water/ventilation equipment,
ambient temperature and air quality
• Lighting programme, stating the dark period(s)
• Weigh birds each week (1% from 3 different areas)
• Test generator function for a minimum of 30 minutes
• Verify that sufficient feed is on order
• Verify that sufficient heating fuel is on order
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