I still don't believe it is a food allergy....
Neither do I.
It's near the bottom of the list of the many things (including inhalant and flea allergies) that it can be.
But a strict elimination diet is the only way to find out.
This is by NO stretch of the imagination an elimination diet:
Ingredients:
Buffalo, Oatmeal, Barley, Salmon Meal, Venison,Whole Brown Rice, Canola Oil (preserved with mixed tocopherols – a source of Natural Vitamin E and Ascorbic Acid, a source of Vitamin C), Flaxseed, Potatoes, Carrots, Peas, Dried Chicken Liver, Whole Apples, Dicalcium Phosphate, Calcium Carbonate, Potassium Chloride, Lysine, Guar Gum, Salt, Choline Chloride, Zinc Amino Acid Complex, Whole Blueberries, Yucca Schidigera Extract, Whole Clove Garlic, Chondroitin Sulfate, Glucosamine Hydrochloride, Natural Venison Flavor, Chicory Root, Marigold Extract, Lactobacillus Plantarum, Enterocococcus Faecium, Lactobacillus Casei, Lactobacillus Acidophilus, Natural Celery Flavor, Iron Amino Acid Complex, Vitamin E Supplement, Manganese Amino Acid Complex, Natural Caramel Color, Vitamin A Supplement, Vitamin B12 Supplement, Copper Amino Acid Complex, d-Calcium Pantothenate, Vitamin D3, Niacin, Lecithin, Riboflavin Supplement, Biotin, Ethylenediamine Dihydriodide, Pyridoxine Hydrochloride, Cobalt Amino Acid Complex, Folic Acid, Thiamine Mononitrate, Sodium Selenite.
If a food allergy is suspected and this diet continues to trigger symptoms, what has been accomplished? Then you'd know that one (or more) of those thirty zillion ingredients was the allergen(s).
QUOTE: The elimination diet generally contains one protein and one starch. These must be based on previous exposure of the dog to various foodstuffs. Important to remember is that dogs who live in households with cats tend to have been exposed to fish, through their consumption of either cat food or cat feces. At UC Davis, we often start dogs with pork and potatoes, although pinto beans and potatoes may also be used. Based on non-exposure, rabbit, duck, and tuna are also options. We have also used ‘exotic’ foods like elk when feasible. Other than fresh water, nothing else should be fed to the dog during the elimination diet trial. END from
http://www.vin.com/VINDBPub/SearchPB/Proceedings/PR05000/PR00093.htm
An elimination diet is very individual, based on every item the dog has ever eaten. Not one of them is included in the "elimination" diet, which eliminates all possible allergens.
If I were feeding a poultry-based raw diet and needed to devise an elimination diet (while I ruled out atopy and flea allergies and all the other possibilities for itch and hair loss, like mites and folliculitis, demodex and thyroid problems), I'd probably get some rabbit or lamb (only if the dog had never been exposed to rabbit or lamb) or I'd consider one of these (whichever one the dog had never eaten):
http://www.onlynaturalpet.com/products/Wellness-95-Meat-Canned-Dog-Food/138131.aspx
One thing to remember is that the food you're asking about has at least *seven* protein sources. Another is that if the dog has ever lived with a cat, he has almost certainly been exposed to fish.