What are the benefits of natural and mechanical ventilation in stabling?
Natural ventilation of correctly spaced doors and adding cupolas or vents is generally sufficient to ensure 4-8 air changes per hour (Wheeler 2006). There is a growing trend for creating stabling with large open free flow airspaces above stabling as shown in figure 3, (Performance horse housing with large open airspaces).
Figure 3: Performance horse housing with large open airspaces,
Taken from http://www.equineengineering.ie/
Having large open airspaces increases air changes and therefore reduces particulates in the housing as shown in Figure 4.
Figure 4- Efficient ventilation
Taken from http://www.omafra.gov.on.ca/english/engineer/facts/10-059.htm
Mechanical ventilation reduces particulates in stabling (Wålinder et al. 2010). During mucking out particles may be dispersed further by mechanical ventilation. However a study by Millerick-May et al. (2011) showed that post is mucking, mechanical engineering caused the settling of particulates to be quicker than otherwise. Initial installation and running cost of mechanical ventilation can be a barrier to purchase for owners of horses.