An apparatus for stunning poultry has a conveyor moving along a predetermined path, for suspending the poultry and a compartmentalized basin defining individual compartments for a conducting liquid. The basin is positioned below a portion of the conveyor and moves at the same speed as the conveyor. A circuit senses the position of each of the compartments relative to a reference point. A circuit, responsive to the circuit for sensing, impresses a voltage across the conveyor and each of the individual compartments. The voltages are a function of the position of each of the compartments. The voltages are variable so as to produce a current regulated signal flowing between the conveyor and each of the individual compartments when the poultry is in contact with the conducting liquid in any of the individual compartments.