WilTec 50039 Operation Manual page 5

Important notice on the parameters: Concerning the term 'internal temperature' ("internal"), do not
confuse the term 'internal temperature' (inside the egg) with 'internal temperature incubator.' The in-
ternal temperature within the incubator constantly changes up and down. The internal egg temperature
thus is the average temperature of the temperature fluctuations inside the incubator.
3. Which temperature should my incubator have?
The required temperature depends on the individual animal species. Every animal species has its own
requirements and also amongst poultry there are difference regarding the required temperature during
the breeding process. Also, the required temperature depends on the incubator type.
An example based on a chicken egg:
With surface incubator (breeding on an even surface), the breeding temperature is measured on the
height of the upper edge of the egg and should be between 38.0°C and 38.3°C. If a motorised incub -
ator (breeding process on multiple stories on top of/next to one another) is used, the measured tem-
perature should be at around 37.5°C at any point of the egg.
An overview of various poultry types and the required breeding temperatures:
Type of poultry
Chicken
Duck
Pigeon
Goose
Quail
Note: A short drop in temperature whilst checking the eggs is usually not a problem for the embryos.
It is different with temperatures exceeding the recommended one. These are harmful and even letal
and should be avoided at all costs.
4. Does my thermometer show an exact value?
Thermometers are not exact. Keeping the temperature constant can prove to be difficult, even with
good thermometers. If you run a big incubator over a longer period of time, you can optimise the tem -
perature, regardless of what the thermometer states.
After the first breeding process, the temperature can vary (higher or lower).
With poultry: If the hatching takes places in an early stage, the temperature should be lowered. If the
hatching is delayed, it needs to be increased.
How to check the thermometer: Keep notes regarding the time of the brood, as these are a reliant
aid. You will soon have the required routine to select the right adjustments and settings for a success-
ful hatch.
Alternatively, an additional thermometer can be placed into the incubator so that you are able to per-
ceive the various temperature differences and to accordingly readjust the incubator temperatures.
5. What has to be the amount of humidity?
The required air humidity varies again depending on the brooded type of animal and needs to be
changed during the breeding process.
Please inform yourself beforehand to know which requirements need to be met inside the incubator.
Here are two examples:
Chicken eggs:
Day 1–18:
From day 19 on:
Quail eggs:
Day 1–14:
From day 15 on:
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Breeding temperature
37.4–37.6°C
37.4–37.6°C
38.5°C
37.6°C
37.6–37.8°C
50–55% air humidity
70–75% air humidity
55% air humidity
75% air humidity
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