let me preface this by saying it's an extremely personal position, whether or not you are opposed to terminal surgeries. by posting my opinion here, i in no way suggest it should be other peoples' opinion, too.
in 2005, i went on my first
ravs trip. for the uninitiated, vet students prepare for these trips by studying copious amounts of notes re: surgery, anaesthesia, physical exam, parasitology, microbiology, etc. during the clinic, vet students perform all the surgeries. the surgeries are limited to i think an hour, at which point a vet will step in and finish the surgery. students are well-supervised.
these are real students performing, well, important procedures on client-owned animals. the standards of care at a ravs clinic are amazing for a field clinic, and rarely (on three trips) have i seen complications occur. i have never seen an animal die on a ravs trip.
i got more experience in ravs clinics than in all of the 4th year surgery practicals.
i also went to guam and did a similar clinic with guam animals in need. somewhat different protocols, but same concept as ravs.
i see it like this:
firstly, with all the animals put down for overpopulation reasons, there's no reason why we need to breed more animals just to kill them.
secondly, if it works for ravs, in a field clinic, why can't vet schools offer a similar course for their own vet students, in that students participate in meaningful procedures under the watchful eye of a trained veterinarian? if there's a problem, the vet is there to step in. if the quality isn't there, the vet steps in. same as if the vet were doing the procedure, except the vet's not doing the procedure.
thirdly, if they're not comfortable with vet students operating on real animals while they're learning, how can they justify licensing and registering a new grad vet to operate carte blanche without supervision? i've read some students saying they'd be uncomfortable operating on a client's animals - again, under supervision, what's the worry? if you're adequately prepared, you have no reason to be concerned. have confidence in yourself.
fourthly, when my cat died, the first thing i did was offer her body to science. if someone could learn something from her, why not? i would have to think that a well-placed, compassionate, gentle reminder (definitely not a salesman's pitch) that they're in a teaching hospital might spur people to consider doing the same when their pets have to be euthanased. ethically-sourced cadavers provide nearly the same tissue-handling as live patients, without the need to unnecessarily kill more animals.
fifthly, from faculty and staff down to students, operating on an animal destined to die breeds a cavalier attitude of, 'what difference does it make? the animals just going to die, anyway.' don't think it doesn't happen. it most definitely does.
sixthly, there are surgical simulators to practice things like suture technique. rumour has it the dasie from guelph is a suitable model for the abdominal organs (mine is in transit, so i have yet to confirm; andrew knight has spoken highly of it).
seventhly, identifying anatomy is equally as effective in a deceased patient as it is in a live patient. the feel might be slightly different, but if you have a patient that's immediately post-mortem, those differences are minimised.
eighthly, we do terminal gi surgeries here. our own surgery lecturer states that you can get all the surgical skills you require (slight overstatement, but still) from a common ovariohysterectomy. so, why not focus on the ovariohysterectomy?
ninthly, when we were seeking clinics to allow us to scrub in on and assist in gi surgeries, with rare exception they suggested those surgeries are just not common. they thought our time would have been better spent on common procedures like sterilisations and skin operations.
tenthly, many schools are going away from terminal surgeries: sydney, tennessee, oklahoma state. if they can train their surgeons without terminal surgeries, surely the others can.
that's off the top of my head.
in their favour, students speak highly of their terminal surgery experience. they get to do procedures they might not otherwise get to do.
that said, 4th year (of 5) is a long time before graduation, and there's plenty of time to forget. and there's only one. is it really any more valuable than doing your first under a vet's supervision as a new grad?
also, we contacted a local wildlife rescue and rehabilitation facility. they happened to have a quenda in their care that was to be euthanased for neurological problems. instead, they allowed us to do the euthanasia and operate immediately post-mortem. a quenda is a lot different to a pig (which, in turn, is a lot different to a dog, cat or horse), but the principles are the same. we studied the same lecture notes, videos, and techniques, and were successful. we gained the same skills as our classmates, without killing more animals.
in the end, our three little pigs live another day.
if you want more on this, visit andrew knight's web page:
http://www.learningwithoutkilling.info/
this is a difficult decision for any student to make. all the best as you make your decision.