Hatcheries are found in a variety of climates, from the hot, humid tropics of Southeast Asia to the hot, arid zones of the Middle East or the changeable climates of Central Europe or the U.S. Typically, the external temperature and relative humidity are subject to seasonal changes (e.g., rainy seasons or very cold winters) or even a day and night rhythm.
The challenge is to establish whether outside air is directly suitable for incubation and, if not, how to make it fit for that purpo
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