Individual pens typically have solid sidewalls which obstruct airflow at the calf level. As a result, it is possible to have increased respiratory disease rates in group-housed calves, despite excellent air quality inside the pens. Keep in mind that group pens pose a larger risk of contagious pneumonia spread by nose-to-nose contact. The key to successfully ventilating group housing is ensuring there are no solid barriers in the path between the fresh air inlet and the calves. Fresh air can be drawn from open curtains, and panel fans can increase the speed of fresh air during warm weather to help with heat abatement.īoth positive-pressure tube ventilation and tunnel ventilation can be designed to provide seasonally appropriate airflow.
The concept of an open area broadens ventilation options. This allows air to be delivered to the calf at their level from any direction. Group pens typically have very open spaces with little obstruction to airflow.
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