Depending on different ventilation requirements, ventilation systems are generally divided into two types: (1) natural air flow system and (2) mechanical air movement (fans). Sometimes it is also combined to provide comfort to the chickens.
Natural air flow system
Ventilated shelters must be exposed to the wind, so place the building on a high site rather than in a low place at least 100 feet away from the side where the prevailing wind enters the building.
Winter Ventilation: Systems for cold weather are much more complicated than for warm weather because houses must be closed tightly for comfort and to conserve energy. Tight enclosures trap the gases, odors, humidity, etc. that must be dealt with continuously for the health of the birds.
Summer Ventilation: A natural air system is used for warm weather conditions in houses with side curtains. This system uses temperature differences and natural air movement to remove excess heat and moisture, and to supply oxygen.
Mechanical ventilation system
Mechanical air movement is required to properly ventilate a house in all extreme climatic conditions. They can be divided into two distinct types: (1) negative pressure and (2) positive pressure.
Negative (Exhaust) System: In the negative pressure system, fans are arranged to expel air from the building.
Positive Pressure System: A positive pressure system uses fans to push air into the building and create a positive pressure.
Acquiring satisfactory humidity levels in the environment in which eggs are hatched makes embryos lose water from their inside to the outside
through steady evaporation.
Each egg has diverse qualities, for example, size, thickness, the amount of pores and shell conductance. For
instance, in older flocks the conductance and size of the egg are more prominent; consequently
they ought to be hatched with higher humidity. It ought to be recollected that thousands of eggs are taken care of so they ought to
be assembled in a way that their qualities be as similar as possible; by flock, age and days in storage.
When there is weight reduction, the hatch is troublesome; the chick requires more energy consumption to
have the capacity to incubate, making a weaker chick be born. On
the other hand, an egg that has the perfect weight
reduction will encounter a simpler hatch and
will invest less efficient energy. Weight reduction
is affected by
moisture in the air, as
well as by temperature. As the temperature increments, brought about by embryonic advancement and development, evaporation increases
through the shell.
A very much fixed single stage machine helps the humidity increase quicker than CO2, which is the reason why the damper can be controlled by humidity. When there are eggs from old breeders the damper will open earlier and when a young flock with low fertility is set, the damper will open later,
adjusting to the attributes of the flock that is in the setter. To obtain good weight reduction, classification and request must be kept up when dealing
with the eggs in the cool room, checking chick quality, measuring weight
reduction and changing it as indicated by the results. Satisfactory weight reduction offers
benefits for embryonic advancement and in the hatching process, which brings about energy investment funds during the incubate, and in getting a chick with