apart from the other animals being terrified because they can see others being killed, it doesn't seem that bad. i'm not a vet, but the twitching probably occurs whilst the animals are unconscious. death is always going to be nasty.
i think i could (and would try it if i could) slaughter meat that i eat, but couldn't do it for a job.
on the topic on animal slaughter, this is the closest i've found to "normal" practise
http://www.youtube.com/watch?v=CxdQKvp-S0Q
apart from the other animals being terrified because they can see others being killed, it doesn't seem that bad. i'm not a vet, but the twitching probably occurs whilst the animals are unconscious. death is always going to be nasty.
i think i could (and would try it if i could) slaughter meat that i eat, but couldn't do it for a job.