as a new member, posting in this thread seems a little risky but here i go...
I personally think that while freezing them is safer, it's not exactly healthier. I feel that freezing changes the meat and when thawed it's not as healthy for my snakes. I try to feed live/bashed when available.
I have always bred my own mice/rats/gerbils etc when I can and would kill and then freeze them the day before use. This ment my snakes didnt get fussy for fresh meat but also meant that my killed prey didnt spend months in the freezer like the commercial gunk does.
I have used both cervical dislocation and the 'whacking' method (known as the bog swing round here) and have found that actually, whacking (if done swiftly and quickly) never fails. I've never had a mouse deglove its tail, it just doesnt happen. Gerbils are another matter and they *must* be neck broken in order to do it cleanly.
Obviously in the UK, live feeding is practically illegal and so it rarely happens. Live feeding has too many associated risks and is too unnatural in a captive environment for me to want to do it. The mouse doesnt have the same fighting chance to get away, nor does the snake should the mouse attack and christ, mouse, rat, hamster and gerbil bites can HURT!!
I had a coastal carpet python that would only live feed and the bites that she had on occasions suffered from her prey were horrific. I hated the idea of live feeding as I can kill quicker than she can but what do you do when your snake is going to die if not fed what she wants?
I hope to never life feed again. I do however advocate the use of fresh kills for the fussy individuals and bar that coastal, I've never had a snake that wouldnt eat fresh kills if it wouldnt eat defrost.
All feeders were well bred (from decent, large show stock... I love genetics!) and gut loaded before dispatch just like you do with crickets for insectivorous species.
Every one will always disagree on this and it will always be a moot point but my personal opinion is that if the snake doesnt *need* live food which lets face it, most dont then it should be fed pre-killed.
Having worked in a vets a seen and heard of incidences involving snakes fed live prey and as a reptile keeper having seen some horror stories, it's just too risky and too slow a death for the mouse for me to belive that live is the way to go. If its nessesary, go for it. If its not... Well... need I say more.
Kat