Electro-immobilization is NOT a humane method of restraint

Temple Grandin
Department of Animal Sciences, Colorado State University, Fort Collins 80523-1171

The use of electricity to immobilize and paralyze animals to hold them still is very aversive and bad for animal welfare.

Electro-immobilization must not be confused with electric stunning. When electric stunning is correctly applied a high amperage current is passed through the brain which renders the animal instantly unconscious.

When electro-immobilization is used a very small current is passed through the body that paralyzes the muscles. It does NOT make the animal unconscious and insensible to pain. The animal is paralyzed, but remains conscious. The animal may not be able to vocalize or struggle because the muscles are paralyzed.

The use of electricity to immobilize animals should be forbidden.
Research in many different laboratories has shown that electrical immobilization is very aversive and should not be used as a substitute for a well designed restraint device.

References

Grandin, T., S. E. Curtis, T. M. Widowski, and J. C. Thurmon. (1986)
Electro-immobilization versus mechanical restraint in an avoid-avoid choice test for ewes
Journal of Animal Science 62:1469-1480

Lambooy, E. (1985)

Electroanesthesia or electroimmobilisation of calves, sheep and pigs with the Feenix Stockstill
Veterinary Quarterly 7: 120-126

Pascoe, P. J. (1986)

Humaneness of a electroimmobilization unit in cattle
American Journal of Veterinary Research 47:2252-2256

Rushen, J., and Congdon, P. (1986)

Sheep may be more averse to electro-immobilization than shearing
Australian Veterinary Journal 63:373-374

Rushen, J. (1986)

Aversion of sheep to electro-immobilization and physical restraint
Applied Animal Behaviour Science 15:315-324

Rushen, J. (1986)

Using aversion learning techniques to assess the mental state, suffering, and welfare of Farm Animals
Journal of Animal Science 74: 1990-1995