I am less than impressed with requirements of 'stunning' laid on by supposed professionals or experts. It may be a precurser to a form of killing that is undeniably coarse and painful. It may be an attempt to justify any kind of killing by assuring it is done in a pro forma manner.

I am guided by the works of Temple Grandin, someone whose story I've read and whose ideas on animal treatment I take seriously. Some of her writings on the internet are available here.