W. Va. Code § 19-2E-5: Methods of humane slaughter.

(a) Livestock, before being shackled, hoisted, thrown, cast or cut must be rendered insensible to pain by a single blow, gunshot or by electrical, chemical or other means that is safe, rapid and effective; or

(b) By slaughtering in accordance with the ritual requirements of the Jewish faith or any other religious faith that prescribes a method of slaughter by the simultaneous and instantaneous severance of the carotid arteries with a sharp instrument as well as handling techniques in connection with such slaughtering; or

(c) By slaughtering in accordance with any method of humane slaughter approved by the United States Department of Agriculture.