In the water bath stunner, poultry are hung by the legs in the shackles. While their heads pass the water bath, stunning is done electrically by immersion of the chicken head and neck, where electrodes and the shackle guide deliver the stunning shock. The chicken water bath stunner can guarantee that stunning is done effectively. The stunning will cause an immediate loss of consciousness, and it will remain till the death of chicken. During this state of unconsciousness bird feels no pain, and doesn't experience stress or fear. Each bird can become the best quality meat product, but to ensure that, it is necessary to provide appropriate conditions for them, such as avoiding that they become stressed. It is important that birds are not frightened and restless. It is recommended that birds stay in the transportation cages until hanging. This might reduce the stress of chicken. As mentioned above, stress can lead to deterioration of meat quality.