- Have the right temperature in the building (see Grimaud Frères recommendations).
- No draughts.
- Start the heating 72 hours before the ducklings arrive.
- Spray the ducklings 1 litre per 1000 ducklings every two hours, 3 times before the night.
- Stir the ducklings by spraying once during the night.
- Repeat the next day, 3 times during the day.