An electrified enclosure of 650 m2 designed for rearing baboons (Papio papio)

A system for an electrified enclosure designed for baboons is described. Live wires were alternated with grounded wires in order to increase the likelihood of electric shock if an animal tried to escape. A sinusoidal current of 50‐Hz frequency, 650‐V voltage, and 10 mA was used and proved to be quite efficient and not dangerous. In order to make the apparatus more reliable the electric main sources were connected to an automatic control system which monitored irregularities in the supply and switches to an emergency circuit if necessary.