Airbags in piggery ventilation (I)

An important one – and an underused one. Pig buildings are getting bigger with much more space to ventilate, and correct air distribution is more difficult in these widespan buildings. Many now house dry sows in large groups in Electronic Sow Feeding (ESF) layouts when the atmosphere can become oppressive in hot weather, causing abnormal behaviour such as aggression, vulva biting, disturbances at the feeders, bed fouling, and less relaxed resting. Also, in all group sizes of growing pigs the a