Almost all the commercially slaughtered chickens that are certified Halaal in South Africa are stunned prior to slaughter.

Answer

All, not ‘almost all’, commercially killed chickens are electrocuted – electrically stunned by dragging their heads through a trough of electrified water. This cruel infliction of injury prior to slaughter is haraam. Every kind of pre-slaughter injury is haraam. The Shariah is emphatic on this prohibition.