brookcove
Posted : 6/13/2006 11:11:37 AM
deer hide contained beta-carotene and potassium and vitamin E
Well, actually, not sure about the other two items (though I could find out pretty easily), but it does contain available vitamin E. Hide/skin also contains selenium, by the way. Raw (really raw, fresh off the animal) hide contains much highly digestible material, and dogs can even digest a good deal of hair. My dogs eat fresh sheep hide complete with wool, and very little is evident on the other side. If an entire fleece passed through undigested, the dogs would do nothing but poop for the next day! I recently fed Ben and Doug the Dog a ram with a full fleece that normally weighs in at shearing at four pounds. Their stools were normal in volume, though wooly, the next day. [

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I have a friend who is a research biologist (PhD) who explored this thoroughly with the intent of turning up deficiencies in the "prey model" diet - and ended up switching hers, about five years ago. She discovered that there are a balance of necessary nutrients in the appropriate prey (rodents, fowl, and small ruminants for medium sized dogs) and that if fed over time will be absolutely complete by any standard. Plus, the nutrients are all presented in the most bioavailable form (to our present knowlege).
A small amount of nervous tissue (eye, brain, spinal tissue) will provide massive levels of vitamin B, which is lacking in "just meat" and is the reason for supplementing with grain, usually. It also provides choline and DHA, which I've never seen supplemented in ANY diet, except a very few that include kelp.
The feet of fowl, waterfowl particularly, contain biotin and folate at high enough levels that just one bite will provide plenty for good health. They are another source of vitamin B12 and selenium (pigs' feet are another good source of these essential antioxidants).
Heart contains taurine as discussed elsewhere, among other vital nutrients like iron, etc. Cats consume an entire kill in their natural state, so they are adapted to require a complete nutrient profile at every feeding. Dogs are opportunistic and are adapted to do well on a diet that is balanced over time - they don't require every nutrient at the exact levels, at every feeding. I reserve judgment, however, on the highly manipulated breeds - I sometimes think my Crested is something other than a dog! [

] So I am more careful with her. Most raw feeders offer a variety of offal to provide the micronutrients that are available in these tissues. Kidney, fresh green tripe, brain (see above), heart, liver, these all are vital in a complete raw diet. They are generally fed every few days in a prey model approach, or a very small amount daily, and not every item every single time.
My dog that is most disadvantaged in terms of overall health, and which I am forced to feed almost entirely on the prey model diet, actually looks the most brilliant most of the time. He's the one a couple vets who didn't know him pegged at seven or eight months old a couple months ago (he's almost ten years old).