Among the methods of artificial ventilation are
sorted passive elements of ventilation such as heat
insulated roof or ridge vent fissure. The active
elements are the cooling fans systems [3].
The value of air flow should not exceed a value
above 0.3m/s at lower temperatures [7]. At higher
values of air flow is reduced temperature tolerance
of housed animals. Heat loss is increased with
convection and evaporation from the surface of the
body, especially in places that are dirty and wet [8].