For those that dont want to read that report...
CERVICAL DISLOCATION
Cervical dislocation is a technique that has been used for many years and, when performed by well-trained individuals, appears to be humane. However, there are few scientific studies to confirm this observation.
This technique is used to euthanatize poultry, other small birds, mice, and immature rats and rabbits. For mice and rats, the thumb and index finger are placed on either side of the neck at the base of the skull or, alternatively, a rod is pressed at the base of the skull. With the other hand, the base of the tail or the hind limbs are quickly pulled, causing separation of the cervical
vertebrae from the skull. For immature rabbits, the head is held in one hand and the hind limbs in the other. The animal is stretched and the neck is hyperextended
and dorsally twisted to separate the first cervical vertebra from the skull.72, 111 For poultry, cervical dislocation
by stretching is a common method for mass euthanasia, but loss of consciousness may not be instantaneous.134
Data suggest that electrical activity in the brain persists for 13 seconds following cervical dislocation, 127 and unlike decapitation, rapid exsanguination does not contribute to loss of consciousness.128, 129
Advantages(1) Cervical dislocation is a technique
that may induce rapid loss of consciousness.84, 127
(2) It does not chemically contaminate tissue. (3) It is rapidly accomplished.
Disadvantages(1) Cervical dislocation may be aesthetically displeasing to personnel. (2) Cervical dislocation
requires mastering technical skills to ensure loss of consciousness is rapidly induced. (3) Its use is limited to poultry, other small birds, mice, and immature
rats and rabbits.
RecommendationsManual cervical dislocation is a humane technique for euthanasia of poultry, other small birds, mice, rats weighing < 200 g, and rabbits weighing < 1 kg when performed by individuals with a demonstrated high degree of technical proficiency. In lieu of demonstrated technical competency, animals must be sedated or anesthetized prior to cervical dislocation.
The need for technical competency is greater in heavy rats and rabbits, in which the large muscle mass in the cervical region makes manual cervical dislocation
physically more difficult.130 In research settings, this technique should be used only when scientifically justified by the user and approved by the Institutional Animal Care and Use Committee.
Those responsible for the use of this technique must ensure that personnel performing cervical dislocation
techniques have been properly trained and consistently
apply it humanely and effectively.