Fiem MG50 Junior Special Manual De Uso página 15

The correct ventilation for a full load of eggs will, necessarily, be too much for only a partial load of eggs. The level of oxygenation can be con-
trolled by adjusting the diameter of the ventilation control placed on the upper panel (ref. MG 100/150). For the model MG50 adjust at the same
time and simultaneously the diameter of the two ventilation holes placed respectively on the superior panel (expulsion of carbon dioxide-outlet
dirty air) and on the door (air oxigened immission-inlet clean air); instead the model MG70 has two ventilation holes placed on the superior
panel which should be adjusted always at the same time.
ATTENTION: Never completely close the ventilation control because it would change all the values of temperature/humidity and aeration,
thus compromising the incubation results.
EGG-CANDLING - At 8th - 10th day of incubation, it is advisable to candle the eggs in order to eliminate those which are infertile; this operation
must be done in a dark room. By observing the inside of a developing, fertile egg, using a suitable candling lamp, it is possible to determine
the embryo development which looks like a small reddish shape, composed of the heart and small arteries which are radiating from it (Fig. b).
If the egg is moved lightly, it is possible to see clearly the rhythmic oscillations of the embryo.
On the contrary, an infertile egg appears completely transparent (clear), with a slight darkening where the yolk is. (a).
If during the candling operation, you find some eggs with a reddish spot stuck or attached to the shell, or a central spot surrounded by one or
more concentric hoops, or something nebulous crossing the inside; then in this case, the embryos are either false or dead, and must be taken
out of the incubator to prevent them contaminating other eggs with bacteria by infection or explosion
a) Infertile egg
b) Egg with normally developing embryo
c) Egg with dead embryo at 5th - 6th day of incubation
Periodic candling during embryonic development is necessary to ensure the best hatching results.
Using a good candling lamp, it is possible to check the growth of the air-space.
The pictures shown herewith show the air-space growth as related to hen,
turkey, and pheasant eggs. If the air space measurements appear similar to
those shown in the picture, it means that the embryo is developing correctly,
and that the amount of humidity supplied in the machine is right.
If the air space is not developing correctly, it means that it is necessary to
change the level of humidity supplied to the machine
SETTING & HATCHING
BASKET
WATER BASIN
PLACE
SETTING TRAY
HATCHING
BASKET
It must be noted that when the air-space is smaller than shown in the table, it is necessary to decrease the humidity value; when the air-space is larger than shown in the
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table, the humidity must be increased.
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ELETRONIC
THERMOSTAT
READING
THERMOMETER °F + CASE
PLASTIC PORT
•
INCUBATOR MOD.
MG70/100 FAMILY
WATER BASIN
PLACE
•
INCUBATRICE MOD.
MG50 JUNIOR SPECIAL
COMPLETE
HOLE
PLASTIC RESERVE
TANK
SETTING
TRAY
HATCHING
BASKET
ELECTRONIC
•
INCUBATOR MOD.
THERMOSTAT
MG100/150 FAMILY
READING
THERMOMETER °F + CASE
COMPLETE PLASTIC
PORT HOLE
THERMOMETER ° F + CASE
WATER BASIN
PLACE
READING
ELETRONIC
THERMOSTAT
COMPLETE PLASTIC
PORT HOLE
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