And to add while I can understand peoples opinions on Science Diet I think the "Burger King" argument is a silly one. What makes Burger King, and junk food in general, bad for people is that its high in fat, cholesterol, and calories. It will lead to obesity and an unhealthy heart. Science Diet on the other hand is 12.5% crude fat which is right on par with every other top food. Its also comparable in calories, protein, moisture, and fiber. The only difference is the perceived quality of ingredients as well as what Electrophile said with the use of BHT/BHA which are carcinogens.
The top super premium foods (i.e.-Innova EVO, Timberwolf Organics, Canidae, Merrick, Chicken Soup, etc) are absolutely no comparison to the crap in Science Diet. Let's compare Innova EVO to Science Diet, shall we? (from their various websites)
Innova EVO Large Bites: Turkey, Chicken, Turkey Meal, Chicken Meal, Potatoes, Herring Meal, Chicken Fat, Natural Flavors, Egg, Apples, Tomatoes, Potassium Chloride, Carrots, Vitamins, Garlic, Cottage Cheese, Minerals, Alfalfa Sprouts, Ascorbic Acid, Dried Chicory Root, Direct Fed Microbials, Vitamin E Supplement, Lecithin, Rosemary Extract
Included in our foods are some of the following vitamins and minerals: Ascorbic Acid, Beta Carotene, Biotin, Calcium Carbonate, Calcium Iodate, Choline Chloride, Cobalt Carbonate, Cobalt Proteinate, Copper Proteinate, d-Calcium Pantothenate, Dicalcium Pantothenate, dl-Methionine, Folic Acid, Iron Proteinate, Manganese Proteinate, Niacin, Potassium Chloride, Pyridoxine Hydrochloride, Riboflavin, Thiamine Mononitrate, Vitamin A Supplement, Vitamin B12 Supplement, Vitamin C Supplement (Sodium Ascorbate), Vitamin D3 Supplement, Vitamin E Supplement (Alpha Tocopherol), Zinc Proteinate
Science Diet Original: Chicken, Ground Whole Grain Corn, Ground Whole Grain Sorghum, Ground Whole Grain Wheat, Chicken By-Product Meal, Soybean Meal, Animal Fat (preserved with mixed tocopherols and citric acid), Corn Gluten Meal, Brewers Rice, Chicken Liver Flavor, Soybean Oil, Dried Egg Product, Flaxseed, Potassium Chloride, Iodized Salt, Calcium Carbonate, Choline Chloride, Vitamin E Supplement, vitamins (L-Ascorbyl-2-Polyphosphate (source of vitamin C), Vitamin E Supplement, Niacin, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Riboflavin, Folic Acid, Vitamin D3 Supplement), minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), DL-Methionine, preserved with Mixed Tocopherols and Citric Acid, Beta-Carotene, Rosemary Extract.
Let's put our thinking caps on and decide which is a more appropriate diet for a carnivorous omnivore, shall we? But I hear you...most clients will balk at the price of Innova EVO, and yes, it is expensive. How about Chicken Soup? I can get Chicken Soup for the same price as Science Diet Original and here are the ingredients.
Chicken Soup Adult: Chicken, turkey, chicken meal, ocean fish meal, cracked pearled barley, whole grain brown rice, oatmeal, millet, white rice, chicken fat (preserved with mixed tocopherols), potatoes, egg product, tomato pomace, duck, salmon, flaxseed, natural chicken flavor, choline chloride, dried chicory root, kelp, carrots, peas, apples, tomatoes, blueberries, spinach, dried skim milk, cranberry powder, rosemary extract, parsley flake, yucca schidigera extract, L-carnitine, Enterococcus faecieum, Lactobacillus casei, Lactobacillus acidophilus, Saccharomyces cerevesiae fermentation solubles, dried Aspergillus oryzae fermentation extract, vitamin E supplement, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, copper sulfate, potassium iodide, thiamine mononitrate, manganese proteinate, manganous oxide, ascorbic acid, vitamin A supplement, biotin, calcium pantothenate, manganese sulfate, sodium selenite, pyridoxine hydrochloride (vitamin B6), vitamin B12 supplement, riboflavin, vitamin D supplement, folic acid.
High in fat and calories is not the only thing that make a food not a wise choice for the animal. I think the Burger King analogy works quite well because it's convenience food. Same thing with most commercial diets. It's dirt cheap for the companies because they are junky ingredients that make it and convenient for you. You get what you put in though. You have to consider the millions of years of evolution that went into the animal before we, over the evolutionary blink of an eye (a little over half a century), pump these animals full of the grain by-products from our manufacturing. C'mon kids, think like biologists and not like you're being lulled into a false sense of security by The Pet Food Industry just because you can get it uber cheap or free at your vet school like you can at mine.
🙄 Wolves, wild dogs, coyotes, and other canids and domestic dogs have a virtually identical digestive tract in both anatomy and physiology. Do wolves eat corn, wheat, soy, sorghum, beet pulp? Oh man, all those roving wolves and coyotes robbing Farmer Brown's fields on a daily basis and eating the phytoestrogens in the soy to put off menopause and eating the beets for fiber. Give me a break...
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Heck, most grass eating ruminants like cattle eat a relative minimum of these (cattle, bison, etc eat mostly grass), let alone animals like dogs who are carnivorous omnivores. No wonder we have to pump them full of antibiotics to keep feedlot cattle from keeling over on a daily basis. Anyways, I am even more sarcastic than I usually am due to a histology test tomorrow (boo....), so I'll leave it at that. But the ingredients speak for themselves and ~60 years of "research" conducted by Hills, Purina, et al. (including some I did myself as a grad student) on diets does not automatically undo millions of years of evolution. Just think about it.