Shaw you are rather fond of chapter and verse are you not. So here are a few chapters and verses for you to gnaw on. Don't leave out the bibliographys.
"A number of notable bodies including the Farm Animal Welfare Committee and the EU Food Safety Authority all agree that there is a high probability that the cutting of sensitive tissues at the neck will trigger a significant pain response in a conscious animal."

https://www.newscientist.com/article/dn17972-animals-feel-the-pain-of-religious-slaughter/

https://www.thetimes.co.uk/article/more-animals-die-in-pain-because-scholars-are-ignorant-of-stunning-fsz83krtn
http://www.tandfonline.com/doi/abs/10.1080/00480169.2014.964345
http://www.fve.org/news/position_papers/animal_welfare/fve_02_104_slaughter_prior_stunning.pdf
https://www.ciwf.org.uk/media/3818629/religious-slaughter-briefing.pdf (plus extensive bibliography)
http://animalstudiesrepository.org/cgi/viewcontent.cgi?article=1017&context=acwp_faafp
https://www.bva.co.uk/uploadedFiles/Content/News,_campaigns_and_policies/Campaigns/welfare-at-slaughter-june-2015-final3.pdf