Chilling can occur at the hatchery, during transport in cold weather conditions, or in the brooder house. It is due to a low temperature or a draft over the chicks. They will be noisy, huddling and weak. We often see increased mortality due to starve out and dehydration. They will be more susceptible to disease and the growth rate may be affected.
Even if the chilling was temporarily, negative effects can still be seen later on in the rearing period. When spray vaccinating or applying Aviguard on chicks, care should be taken to keep them warm until dry to prevent chilling.