How to tackle respiratory issues in sheds during changeable weather

Create a natural movement of air, where the air comes in at an appropriate point and height in the shed and then has a route out of the shed at a higher point.

The last few weeks have been extremely mild temperature-wise, while we have been getting all the rain. We have had some cold nights but days have been mild. 

The variation in temperatures has proved challenging with many reports of respiratory issues in all ages of cattle. It is so hard to get ventilation right in sheds.