Religious slaughter methods in some Jewish and Muslim traditions omit pre-stunning. The welfare science consistently shows that slaughter without prior stunning prolongs the time to unconsciousness.
The scientific evidence shows that slaughter without effective pre-stunning causes a period of conscious pain between incision and unconsciousness that does not occur with effective pre-stunning. The duration of this period varies by species and incision technique. Post-cut stunning applied immediately after incision offers a compromise that meets some religious requirements while substantially reducing the welfare interval. This remains a contested area requiring respectful engagement between welfare science and religious communities.