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Please make reference to the following chart in order to have a successful hatching:
Incubation
Species
time
Hen
21 days
Pheasant
23-25 days
Quail
16-17 days
Guinea fowl
26-28 days
Turkey
28 days
Partridge
23-24 days
Peacock
28 days
Goose
29-31 days
Duck / Mallard
27-28 days
Muscovy duck
33-35 days
5 – PERIODIC CHECK OF EGGS DURING INCUBATION (CANDLING)
The candling is a delicate and complex operation that can lead to eliminating fertilized eggs by mistake. Since it is
facultative, if you are not experienced we recommend proceeding directly with the incubation.
You can periodically check the incubated eggs by candling them. This operation should be carried out in a dark room,
using a strong beam (e.g. the River Systems' egg tester art. 164), as per the following chart:
Species
Hen
Pheasant
Guinea fowl
Turkey
Partridge
Peacock
Goose
Duck / Mallard
Muscovy duck
Take the eggs individually from the incubator and check them immediately. The egg can stay out of the incubator for
maximum 2 minutes. With a little experience, and if you use the egg tester, you can candle the eggs without lifting
them. In this case, open the incubator and lay the egg tester on each egg. The beam allows you to see the embryo.
Never shake or turn violently the egg as this can break the blood vessels and therefore cause the death of the embryo.
st
1
check: beginning of incubation
Normally it is difficult to see the embryo, as it is incorporated in the yolk: next to the air cell and at its point you shall
see blood vessels. If the egg is not fertilized its inside is uniform, doesn't show blood vessels and the yolk is right in the
middle. Discard these eggs.
It is possible that eggs with a thick shell or brown ones don't allow a clear view of their interior at this stage: leave them
to the second check.
nd
2
check: development of the embryo
You will normally see a network of blood vessels at the point of the egg and the embryo will look like a dark spot. If the
blood vessels are not present, it means that the embryo is lost.
rd
3
check: verification of the embryo
Normally the embryo occupies the entire egg, therefore the blood vessels shall be no longer visible. The air cell is big.
If the embryo doesn't fill the whole egg, blood vessels are still visible, the air cell is small and the albumen has not been
used up, it means that the embryo is underdeveloped and the egg should be discarded.
Chasse
For a correct humidity
at the beginning of
incubation
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
Fill up 1 water basin
st
1
check
at 8 days
at 8 days
at 8 days
at 8 days
at 8 days
at 9 days
at 9 days
at 9 days
at 10 days
Pêche
Do not turn
the eggs after
Day 18
Day 20
Day 14
Day 23
Day 25
Day 20
Day 25
Day 27
Day 24
Day 30
nd
2
check
at 11 days
at 12 days
at 13 days
at 13 days
at 12 days
at 14 days
at 15 days
at 13 days
at 15 days
30
Loisir et nature
For a correct humidity during
the last 3 days before hatching
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
Fill up the 2 water basins
rd
3
check
at 18 days
at 19 days
at 24 days
at 24 days
at 19 days
at 24 days
at 24 days
at 24 days
at 25 days
Jardin
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