to raise or lower the voltage going to the dc stunner grate and an on off switch the ac power pack uses standard ac voltage as an input 115 120 vac the applied voltage is displayed through a digital display located on the face of the ac power pack enclosure the ac power pack also includes a variable transformer to raise or lower the voltage going to the ac stunner grate and an on off switch the stunner controller operates to control the dc and ac voltages applied to the bird as described herein in operation the legs of poultry are connected to the kill line shackles 13 and the poultry is conveyed upside down along the overhead track 14 from the dc stunner contact grate 18 towards the ac stunner contact grate 28 the salt water injection system 31 injects a sufficient amount of salt water into the dc stunner section 17 of the stunner cabinet 11 such that as the poultry is conveyed along the overhead track 14 the head of the poultry is sufficiently submerged in the salt water to cause an electrical connection for a pulsating dc current to flow from the dc stunner grate 18 to the kill shackles 13 this electrical connection enables the pulsating dc current to flow through the poultry such that the poultry is stunned effectively according to an illustrative embodiment as the poultry is conveyed toward the ac stunner contact grate 28 the head of the poultry emerges from the salt water solution as the head of the poultry comes into contact with the ac stunner contact grate 28 the head of the poultry is damp enough to create.