Sure. Preface by saying my Dobes and Jagdterrier had/have iron guts. I have not had to be very careful about introduction/change at all.
Many years ago I started with Nature’s Variety Instinct Raw. It is easy to find and available in Canada (where I live) and the US (Dobe used to come with me to FLA etc). It is fully prepared and complete. I initially started without fasting. Some people will say you must fast for at least 24hrs. Neither of my dogs had any sensitivities to specific proteins so I started with beef and then began to rotate my proteins. One would usually start with poultry.
At one point I provided a grain free kibble meal and then a raw meal. Separate meals entirely. Eventually switched to 100% raw.
A few years ago I sourced out local, smaller companies that sold prepared raw. Far less processed than Nature’s Variety and I like local. Usually organic etc. The 2 companies I buy the most from are: http://www.congoraw.com/
and http://www.bigcountryraw.ca/
Both those sites provide some helpful info.
I feed a basis of prepared meal type raw (rotate proteins) which includes some mashed up fruit and veg (dogs cannot digest cellulose so fruit and veg is best utilized pureed or cooked). I add coconut oil and fish oil. I make my own bone broth and freeze in ice cube trays. A few times a week I offer: meaty bones, chicken necks, duck necks, chicken wings, lamb legs, duck feet. The meaty bones and lamb legs offer recreational chewing (clean teeth) the others are fully consumed. I also make my own fruit and veggie blend (kale, spinach, pear, apple, carrot, blueberry and kelp) which I add at least once a day.
For some dogs I highly recommend adding canned pumpkin (not pie filling - no added anything) at least in the beginning and a pro bio.
I keep tweaking a bit as I go. My dogs knocking on wood do not have health issues. Their coats, teeth, poops are all amazing (as far as a dog poop can go lol). I just lost the Dobe to heart disease but up until his last day he looked incredible. That doesn’t sound like a testament to my regime but he was my 4th Dobe in a row to die from the disease and he was symptom free until 4 days prior to his death. He was 9…my 2 previous males with the disease had died at 8 and 6. I don’t believe he would have lived that long nor that well if not for his overall generally very good health. That disease is a genetic breed issue above anything else unfortunately.
My Terrier impaled herself on a pitchfork and the emerg vet thought she was 9 months instead of 9 years.
Most vets are no help when it comes to nutrition. I have done a TON of research. I previously worked in the pet food industry and do believe kibble is a very poor choice of food.
Honestly I don’t understand most peoples aversion to feeding raw. It is not prohibitively expensive for most, it is easy to buy/feed, it just feels like the right thing to do and so far I can’t argue with the results.
I hope that answers some of your questions. All just my experiences, opinions and findings. If you would like anymore info feel free to ask!