Ducatillon mg244 Manual Del Usuario página 12

the left side panel for the expulsion of CO2, equipped with a regulation flap. By acting on the appropriate shutter, it is
possible to modify the aeration and the air renewal and thus modify the humidity level. During the incubation period, the
air renewal must always be guaranteed, depending on the quantity of eggs loaded in the machine. In fact, for a full load of
eggs, it is necessary to provide a high oxygenation; for a minimum load of eggs, on the other hand, a greater flow of air
could be superfluous. Also, by acting on the flap located on the top of the incubator, it is possible to reach a degree of
aeration in accordance with the requirements of the incubator.
ATTENTION: never close the flap completely, as this would considerably disturb the humidity, temperature and aeration
values, compromising the incubation results.
The incubation results will be compromised.
MIRAGE
After the eighth-tenth (3 days for those who have experience) day of incubation, it is opportune to carry out the candling in
order to identify and eliminate the eggs possibly not fertilized. Putting in a dark room and observing the inside of the
fertilized egg, with the help of an eggstick, we can see the embryo in development, having the shape of a small reddish
spider, constituted by the heart and by the small arteries that disperse (b); if we slightly shake the egg, we clearly note
rhythmic oscillations of the embryo. On the contrary, an unfertilized egg is perfectly transparent, with a slight darkening
that corresponds to the yolk.
Candling allows to eliminate the unfertilized eggs or with false embryos or dead embryos which could soil or infect the
incubator.
d) unfertilized egg
e) egg with developing embryo
f) egg with dead embryo at the 5th - 6th day of incubation
A periodic control of the eggs in embryonic development is necessary to guarantee excellent results of hatching. In fact, by
using an egg tester with sufficient power, it is possible to control the descent of the air chamber. The following drawings
illustrate the data relating to chicken, turkey and pheasant eggs; if the candling measurements correspond to the lines in
the drawing, the embryonic development is correct, and the humidity level given is therefore accurate; if, on the other
hand, the descent of the air chamber differs from the examples given in the illustrative drawing, the humidity values must
be modified.