Captive bolt causes irreparable damage to the brain. This method is used on different animals like cattle, pigs, sheep and goats. This method is used primarily because it has low running cost and many developing countries can adopt it. Two main types of captive bolt gun: penetrating and non-penetrating.
Penetrating where a metal rod is fired which makes a concussion or intracranial pressure which causes bruising of the brain. There is a gun which uses the trigger system and somewhere taping on the head makes the metal rod explode and hit the head. The same system is accompanied by a non-penetrating captive bolt gun which also has a metal rod except its mushroom shaped tip this causes a concussion or animal unconscious.
Electrical stunning
Electric stunning makes the animals unconscious with the help of an electric current which is flown through animal’s brain. It’s used for pigs, goats, sheep and poultry. There are two ways which it can be used by passing a low alternative current through the side of the brain or below their jaws. For poultry electrified water is used to make them unconscious. Birds pass through a small channel of water shacked upside down. Birds who by chance avoid the bath had to be painfully killed while being conscious. Sometimes animals will regain consciousness if not quickly