I don't know about it being a fetish, but I remember when I was a small girl my grandparents raised a few chickens. When it was time to fry one up my grandfather would always let my grandmother kill the chicken. She wouldn't chop it's head off, but she would grab it by the neck and start twirling it around with her arm outstreched in a windmill fashion until she wrung it's neck off. It seems it would have been faster and easier to just chop it off.