Hill’s Prescription Diet B/D Canine (Dry)

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Rating: ☆☆☆☆☆

Hill’s Prescription Diet B/D Canine is not rated due to its intentional therapeutic design.

The Hill’s Prescription Diet B/D Canine product line includes one dry dog food, a recipe designed to help support brain health and aging.

Hill's Prescription Diet B/D Canine Brain Aging Care

Dry Dog Food

Estimated Dry Matter Nutrient Content

Protein = 19% | Fat = 16% | Carbs = 57%

Ingredients: Whole grain corn, chicken by-product meal, pork fat, brewers rice, soybean mill run, soybean meal, flaxseed, fish meal, chicken liver flavor, lactic acid, egg product, soybean oil, carrots, spinach, dried citrus pulp, dried tomato pomace, dried grape pomace, potassium chloride, oat fiber, lipoic acid, vitamins (vitamin E supplement, l-ascorbyl-2-polyphosphate (source of vitamin C), niacin supplement, thiamine mononitrate, vitamin A supplement, calcium pantothenate, biotin, vitamin B12 supplement, pyridoxine hydrochloride, riboflavin supplement, folic acid, vitamin D3 supplement), choline chloride, l-lysine, iodized salt, calcium carbonate, l-tryptophan, taurine, minerals (ferrous sulfate, zinc oxide, copper sulfate, manganous oxide, calcium iodate, sodium selenite), l-carnitine, mixed tocopherols for freshness, natural flavors, beta-carotene

Fiber (estimated dry matter content) = 4.3%

Red items indicate controversial ingredients

Estimated Nutrient Content
MethodProteinFatCarbs
Guaranteed Analysis19%16%NA
Dry Matter Basis19%16%57%
Calorie Weighted Basis17%34%50%
Protein = 17% | Fat = 34% | Carbs = 50%

The first ingredient in this dog food is corn. Corn is an inexpensive and controversial cereal grain. And aside from its energy content, this grain is of only modest nutritional value to a dog.

For this reason, we do not consider corn a preferred component in any dog food.

The second ingredient is chicken by-product meal, a dry rendered product of slaughterhouse waste. It’s made from what’s left of a slaughtered chicken after all the prime cuts have been removed.

In addition to organs (the nourishing part), this stuff can contain almost anything — feet, beaks, undeveloped eggs — anything except feathers.

On the brighter side, by-product meals are meat concentrates and contain nearly 300% more protein than fresh chicken.

In any case, although this item contains all the amino acids a dog needs, we consider chicken by-products an inexpensive, lower quality ingredient.

The third ingredient is pork fat, a product from rendering pig meat.

Commonly known as lard, pork fat can add significant flavor to any dog food. And it can be high in linoleic acid, an omega-6 fatty acid essential for life.

Although it may not sound very appetizing, pork fat (in moderate amounts) is actually an acceptable pet food ingredient.

The fourth ingredient is brewers rice. Brewers rice is a cereal grain by-product consisting of the small fragments left over after milling whole rice. Aside from the caloric energy it contains, this item is of only modest nutritional value to a dog.

The fifth ingredient is soybean mill run. Mill run is a by-product, mostly the hulls of soybeans remaining after processing the beans into meal. This is nothing more than a cheap, low-quality filler more commonly found in cattle feeds.

The sixth ingredient is soybean meal, a by-product of soybean oil production more commonly found in farm animal feeds.

Although soybean meal contains 48% protein, this ingredient would be expected to have a lower biological value than meat.

And less costly plant-based products like this can notably boost the total protein reported on the label — a factor that must be considered when judging the actual meat content of this dog food.

The seventh ingredient is flaxseed, one of the best plant sources of healthy omega-3 fatty acids. Provided they’ve first been ground into a meal, flax seeds are also rich in soluble fiber.

However, flaxseed contains about 19% protein, a factor that must be considered when judging the actual meat content of this dog food.

The eighth ingredient is fish meal, another protein-rich meat concentrate.

Fish meal is typically obtained from the “clean, dried, ground tissue of undecomposed whole fish and fish cuttings” of commercial fish operations.1

Unfortunately, this particular item is anonymous. Because various fish contain different types of fats, we would have preferred to have known the source species.

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 five notable exceptions

First, soybean oil is red flagged here only due to its rumored (yet unlikely) link to canine food allergies.

However, since soybean oil is high in omega-6 fatty acids and contains no omega-3’s, it’s considered less nutritious than flaxseed oil or a named animal fat.

Next, 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.

In addition, citrus pulp is a by-product obtained from the waste of citrus juicing operations. This item is most likely included here for the usual benefits of dietary fiber.

Next, we find no mention of probiotics, friendly bacteria applied to the surface of the kibble after processing to help with digestion.

And lastly, the minerals listed here do not appear to be chelated. And that can make them more difficult to absorb. Non-chelated minerals are usually associated with lower quality dog foods.

Hill’s Prescription Diet B/D Canine Dog Food
The Bottom Line

Although this is a prescription product, our review has nothing to do with the accuracy of claims made by the manufacturer as to the product’s ability to treat or cure a specific health condition.

So, to find out whether or not this dog food is appropriate for your particular pet, it’s important to consult your veterinarian.

With that understanding…

Judging by its ingredients alone, Hill’s Prescription Diet B/D Canine Brain Aging Care appears to be a below-average dry product.

But ingredient quality by itself cannot tell the whole story. We still prefer to estimate the product’s meat content before concluding our report.

The dashboard displays a dry matter protein reading of 19%, a fat level of 16% and estimated carbohydrates of about 57%.

And a fat-to-protein ratio of about 83%.

Below-average protein. Near-average fat. And above-average carbs when compared to a typical dry dog food.

When you consider the protein-boosting effect of the soybean meal and flaxseed, this looks like the profile of a dry product containing a limited amount of meat.

Bottom line?

Hill’s Prescription Diet B/D Canine is a plant-based dry dog food using a limited amount of chicken by-product meal as its main source of animal protein.

Hill’s Prescription Diet Dog Food
Recall History

The following list (if present) includes all dog food recalls since 2009 directly related to this product line. If there are no recalls listed in this section, we have not yet reported any events.

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Notes and Updates

01/05/2017 Last Update

  1. Association of American Feed Control Officials