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The hatching of chickens in an incubator is a carefully controlled operation with set conditions for temperature, humidity and ventilation, and regular egg turning. Chickens take 21–25 days to hatch under these conditions.
Te whakamahi i tēnei tūemi
Poultry Industry Association of New Zealand
Permission of the Poultry Industry Association of New Zealand must be obtained before any re-use of this material.