dogs eating tripe

Penny gets a varied diet, and one thing we sometimes feed is Ziwi brand canned meat with tripe. I am thinking, after reading The Canine Bark's post about the value of feeding tripe, that I might ask my friendly local butcher about it. It would probably be cheaper and healthier to buy it fresh. However, it's years since I've seen it in our local shop. Maybe he has some out the back.
I just checked back to the article by Dr Bruce from Vet's All Natural that I wrote about on December 8 last year. He says::

Tripe is the common term for the stomach lining of cattle and sheep.
Most tripe sold for HC has been washed in boiling water and bleached. Green tripe is the term used for un-processed tripe and is highly nutritious as a meat source. It is very low in fat (2%), highly glandular (contains enzymes), and is loaded with probiotic micro-organisms. Tripe is also a ‘white” meat (meaning it has a low amount of myoglobin, the protein that makes red meat red), and has historically been used for dogs with sensitive digestive tracts, or food allergies. I have utilised tripe for some time now as an alternate to kangaroo meat for treating difficult cases of allergic dermatitis in dogs (and occasionally cats) with great results.

SUMMARY – TRIPE
Tripe is very affordable, but can be difficult to source, and this is one of its main limitations. An excellent source of nutrition and, if available, should be very highly regarded as a fresh meat for pets.