Novital Covatutto 24 Instrucciones Para Uso Y Mantenimiento página 13

EGG CANDLING
The fertilized egg contains a
developing embryo, and you can see a
capillary network immediately under
the eggshell; the embryo seems a dark
spot that becomes bigger and bigger
as the incubation goes on. After a
The candling operation is carried out
certain period, you can see just a dark
by lighting up the egg with a
mass and the air space becomes super-bright torch or rather a speci c
bigger and bigger. Novital egg-candling lamp (see the
catalogue in the website:
www.novital.it).
Day 6-7
The candling operation is carried out
From day 6 - 7, you can "candle" the
in dark premises. The torch must be
eggs to remove non-fertilized eggs.
the sole light source.
This operation is not indispensable.
EMBRYO DEVELOPMENT STAGES
Day 8
1
10
20
A
At day 8, use the candling operation
Normal development of the air space:
to identify the following situations:
with the passing of days, the air space
grows as shown.
(A) the egg has a network of red
blood vessels: normal development
of the embryo
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The candling operation is carried out
by lighting up the eggs from the part
that is opposite to the tip, which must
keep facing downwards.
Day 10-17
You can repeat this operation between
day 10 and 17 (not later than that) to
check the correct development of the
eggs.
B C D
(B) the egg reveals no formation: likely
premature death of the embryo
(C) the egg has a marked red or black
spot: likely premature death of the
embryo
(D) the egg has a blood red ring: likely
premature death of the embryo
Day 10-12 Day 16-18
Correct embryo development around
Correct embryo development during
day 16: the embryo is considerably
the period around day 10: the embryo
growing and, during the candling
is growing and the blood vessels are
operation, it appears to be totally dark,
becoming thicker.
except for the air space.
EGG HATCHING
H
To prepare the incubator to Three days before egg-hatching, add
egg-hatching, see the attached water into the bowls so that it will not be
brochure ( ). necessary to top them up. After that,
open the incubator only if it is strictly
necessary, not to disturb the delicate
egg-hatching period.
Three days before egg-hatching,
remove the separators.
www.novital.it
- 1-2 days from egg hatching
A few hours before egg-hatching
(24-48 hours), the live embryo shows
the beak in the air space.
During the last three days, it is not
advisable to perform any candling
operation.
O
2
Three days before egg-hatching, do
not turn the eggs manually or by using
the egg-turning device, if installed.
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