Head Restraint Options

	Active		Part-passive	Passive
	Head-yoke and chin-lift	Cantilever neck-yoke	Hinged neck-yoke	Head shelf
Effect of restraint on animal	Held securely in a fixed position	Backward movement restricted	Backward movement restricted	Downwards movement restricted
Advantages	Animal held stable Allows accurate shot Good for training staff Can hold heavy animals Animal cannot move backwards	Animal held stable Allows accurate shot Good for training staff Animal cannot move backwards	Animal held stable Allows accurate shot Head held in a good position Animal cannot move backwards	Allows accurate shot No distraction to animal No power requirements No extra stress to the animal Not physically restrained No effect on throughput time
Disadvantages	Extra stress experienced Slower throughput time Increased time in stun-box prior to stunning Disruption of carcase removal	Extra stress experienced Slower throughput time Increased time in stun-box prior to stunning Disruption of carcase removal Cannot hold heavy, strong animals	The passive arm may deter animal from entering the stun-box The moving arm may stress the animal	Does not restrict all movement A bar may be needed across the top of the box A rump-push may be required to position the animal (power would be required)

Humane Slaughter Association

The Old School, Brewhouse Hill, Wheathampstead, Herts, AL4 8AN, UK

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