Raised carbon dioxide levels during hatching: a myth debunked

摘要

For many years, raised CO2 levels at the end of the incubation period were thought to be harmful for the developing bird embryo - this is a myth that could not be further from the truth. Under natural circumstances, the level of CO2 measured in the micro-environment under the hen reaches 0.4% or 4,000ppm at least, and often more.