Tripe is a food item with one of the highest nutritional values.
But here is the common problem: tripe is not readily available, and if you may find it in a grocery store, it is washed, bleached, and therefor it has next to no food value anymore.So the next step is the tripe out of a can. There is a whole world out there with canned tripe, and it is confusing. I will add here a few links for you to get informed about tripe.
My conclusion:
Canned tripe for me is no substitute to the raw-fresh tripe.
Get frozen tripe from someone else? How would you know the quality of that tripe. If the tripe is not USDA approved you might get the stomachs from "down",sick cows besides loads of growth hormones, antibiotics, and other chemicals.
My dogs for now for can live without tripe. There are plenty of other wholesome, nutritional rich foods out there, Tripe is not the only one!!
http://www.dogsnaturallymagazine.com/the-stink-on-tripe/
http://www.aplaceforpaws.com/blog/raw-tripe-vs-canned-tripe