Supreme Source Grain Free Dog Food receives the Advisor’s second-highest tier rating of 4 stars.
The Supreme Source Grain Free Dog Food product line includes 4 dry dog foods.
Each recipe below includes its related AAFCO nutrient profile when available on the product’s official webpage: Growth, Maintenance, All Life Stages, Supplemental or Unspecified.
Use the links below to check prices and package sizes at an online retailer.
- Supreme Source Lamb Meal and Potato [A]
- Supreme Source Turkey Meal and Sweet Potato [A]
- Supreme Source Pork, Peas and Wild Boar (3 stars) [A]
- Supreme Source Salmon Meal and Sweet Potato (3.5 stars) [A]
Supreme Source Lamb Meal and Potato Recipe was selected to represent the other products in the line for this review.
Supreme Source Lamb Meal and Potato Recipe
Dry Dog Food
Estimated Dry Matter Nutrient Content
Ingredients: Lamb meal, peas, lentils, potatoes, poultry fat (preserved with mixed tocopherols), tomato pomace, natural flavor, salmon oil (preserved with mixed tocopherols), organic dried seaweed meal (Ascophyllum nodosum), salt, taurine, betaine, calcium carbonate, choline chloride, carrots, blueberries, cranberries, spinach, parsley, pomegranates, vitamin E supplement, zinc oxide, dl-methionine, zinc proteinate, ferrous sulfate, manganous oxide, vitamin A supplement, d-calcium pantothenate, copper sulfate, manganese proteinate, niacin supplement, riboflavin supplement, calcium iodate, thiamine mononitrate, pyridoxine hydrochloride, copper proteinate, vitamin D3 supplement, folic acid, sodium selenite, biotin, vitamin B12 supplement, cobalt carbonate, rosemary extract
Fiber (estimated dry matter content) = 7.2%
Red denotes controversial item
|Estimated Nutrient Content|
|Dry Matter Basis||29%||12%||51%|
|Calorie Weighted Basis||26%||27%||47%|
The first ingredient in this dog food is lamb meal. Lamb meal is considered a meat concentrate and contains nearly 300% more protein than fresh lamb.
The second ingredient includes peas. Peas are a quality source of carbohydrates. And like all legumes, they’re rich in natural fiber.
The third ingredient lists lentils. Lentils are a quality source of carbohydrates. Plus (like all legumes) they’re rich in natural fiber.
However, both peas and lentils contain about 25% protein, a factor that must be considered when judging the actual meat content of this dog food.
The fourth ingredient is potato. Potatoes can be considered a gluten-free source of digestible carbohydrates. Yet with the exception of perhaps their caloric content, potatoes are of only modest nutritional value to a dog.
The fifth ingredient is poultry fat. Poultry fat is obtained from rendering, a process similar to making soup in which the fat itself is skimmed from the surface of the liquid.
Poultry fat is high in linoleic acid, an omega-6 fatty acid essential for life.
However, poultry fat is a relatively generic ingredient and can be considered lower in quality than a similar item from a named source animal (like chicken fat).
The sixth ingredient is tomato pomace. Tomato pomace is a controversial ingredient, a by-product remaining after processing tomatoes into juice, soup and ketchup.
Many praise tomato pomace for its high fiber and nutrient content, while others scorn it as an inexpensive pet food filler.
Just the same, there’s probably not enough tomato pomace here to make much of a difference.
After the natural flavor, we find salmon oil. Salmon oil is naturally rich in the prized EPA and DHA type of omega-3 fatty acids. These two high quality fats boast the highest bio-availability to dogs and humans.
Depending on its level of freshness and purity, salmon oil should be considered a commendable addition.
From here, the list goes on to include a number of other items.
But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this product.
With four notable exceptions…
First, we find no mention of probiotics, friendly bacteria applied to the surface of the kibble after processing to help with digestion.
Next, we note the inclusion of dried seaweed meal, a product made from a family of brown algae known as Fucaceae (Rockweed). Although it does contain a number of healthy nutrients, seaweed meal is primarily used as a source of inexpensive carbohydrates (about 60% dry matter).
This item is only rarely used to make pet food and is more typically found in feeds for cattle, horses, hogs, hens and sheep.
In addition, we find taurine in this food. Taurine is an important amino acid associated with the healthy function of heart muscle. Although taurine is not typically considered essential in canines, some dogs have been shown to be deficient in this critical nutrient.
Since taurine deficiency appears to be more common in pets consuming grain-free diets, we view its presence in this recipe as a positive addition.
And lastly, this food contains chelated minerals, minerals that have been chemically attached to protein. This makes them easier to absorb. Chelated minerals are usually found in better dog foods.
Supreme Source Grain Free Dog Food Review
Judging by its ingredients alone, Supreme Source Grain Free looks like an above-average dry dog food.
As a group, the brand features an average protein content of 29% and a mean fat level of 13%. Together, these figures suggest a carbohydrate content of 50% for the overall product line.
And a fat-to-protein ratio of about 44%.
Near-average protein. Below-average fat. And near-average carbs when compared to a typical dry dog food.
When you consider the protein-boosting effect of the peas and lentils, this looks like the profile of a kibble containing a moderate amount of meat.
Supreme Source Grain Free is a dry dog food using a moderate amount of named meat meals as its main sources of animal protein, thus earning the brand 4 stars.
Supreme Source Dog Food
The following list (if present) includes all dog food recalls since 2009 directly related to this Supreme Source product line. If there are no recalls listed in this section, we have not yet reported any events.
A Final Word
The Dog Food Advisor is privately owned. We do not accept money, gifts, samples or other incentives in exchange for special consideration in preparing our reviews.
However, we do receive a referral fee from online retailers (like Chewy or Amazon) when readers click over to their website from ours. This helps cover the cost of operation of our free blog. Thanks for your support.
For more information, please visit our Disclaimer and Disclosure page.
Important FDA Alert
The FDA is investigating a potential link between diet and heart disease in dogs. Click here for details.
Notes and Updates
08/11/2019 Last Update