© by WilTec Wildanger Technik GmbH Item 51185, 51186 Page 6
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Chicken eggs:
Day 1–18: 50–55 % air humidity
From day 19: 70–75 % air humidity
Quail eggs:
Day 1–14: 55 % air humidity
From day 15: 75 % air humidity
The air humidity is increased towards the end of the breeding with poultry eggs to soften the hard egg
membrane. Without increased humidity, the chicks can neither break through the membrane nor through
the egg shell. Yet, the humidity should not be increased too much, as the chicks might drown.
Note: The humidity is checked with a so-called hygrometer. It is near enough impossible to keep hu-
midity as exact as temperature, especially in small incubators. Just try to keep it as exact as possible.
The temperature is the significant criteria. Even a small deviation (even a couple of degrees) can ruin
the breeding process or lead to a bad result.
Important: The air humidity changes just like the season.
If the breeding is carried out in January and February, it is very difficult to keep the humidity at the
desired level, as the external humidity is rather low (depending on the location).
In June and July, the external humidity usually is higher, resulting in the humidity in the incubator being
higher than desired. To avoid these problems, change the water surface in the incubator: To increase
the humidity and thus to enlarge the water surface, place an additional container with water/a few small
moist sponges in the incubator. Alternatively, the eggs can be sprayed with fine water mist. To reduce
the humidity, decrease the water surface by using smaller containers.
Important: Choose the shape and execution of the water containers keeping in mind, that they should
not become a fatal danger for the hatched chicks and reptiles.
6. How long is the incubation time?
7. Poultry eggs: When start to turn and how frequently? When do the eggs not must be turned
any longer?
The incubator does not have an automatic turning mechanism; thus, the eggs need to be turned
by hand. The embryos are very sensitive in the first days, therefore shakes should be avoided. This
also means that the eggs should only be turned from the fourth day onward. The easiest method of
assistance is to carefully mark the egg on two opposite areas, to see to which area the egg needs to be
turned to. It is recommended to turn the eggs 5 times a day with a minimum of 90°.
Additionally, the incubator should be kept closed within the first three days of breeding, if possible. This
allows for a better climate to build up.
Important: In the last two to three days of the breeding process the eggs must not be turned any
longer. For the chicks are finding a hatching position, which must not be changed any more.
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