Hill’s Science Diet Adult Plus (Canned)

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Rating: ★★☆☆☆

Hill’s Science Diet Adult Plus canned dog food receives the Advisor’s lowest-tier rating of 2 stars.

The Hill’s Science Diet Adult Plus product line includes seven canned dog foods each claimed to meet AAFCO nutrient profiles for adult maintenance.

The following is a list of recipes available at the time of this review.

  • Hill’s Science Diet Adult 7+ Beef and Barley Entree (1 star)
  • Hill’s Science Diet Adult 7+ Turkey and Barley Entree (1 star)
  • Hill’s Science Diet Adult 7+ Chicken and Barley Entree (1 star)
  • Hill’s Science Diet Small/Toy Adult 7+ Chicken and Barley Entree (1 star)
  • Hill’s Science Diet Adult 7+ Savory Stew with Beef and Vegetables (3 stars)
  • Hill’s Science Diet Adult 7+ Savory Stew with Chicken and Vegetables (3 stars)
  • Hill’s Science Diet Small/Toy Adult 7+ Savory Stew with Chicken and Vegetables (3 stars)

Hill’s Science Diet Adult 7+ Chicken and Barley Entree was selected to represent the other products in the line for this review.

Hill's Science Diet Adult 7+ Chicken and Barley Entree

Canned Dog Food

Estimated Dry Matter Nutrient Content

Protein = 19% | Fat = 15% | Carbs = 59%

Ingredients: Water, chicken, cracked pearled barley, whole grain corn, pork liver, dried whey, dried beet pulp, soybean oil, corn gluten meal, chicken liver flavor, choline chloride, fish meal, calcium carbonate, vitamins (vitamin E supplement, thiamine mononitrate, ascorbic acid (source of vitamin C), niacin supplement, calcium pantothenate, vitamin B12 supplement, pyridoxine hydrochloride, biotin, riboflavin supplement, vitamin D3 supplement, folic acid), iodized salt, potassium chloride, iron oxide color, minerals (zinc oxide, ferrous sulfate, manganese sulfate, copper sulfate, calcium iodate), taurine, l-tryptophan, beta-carotene

Fiber (estimated dry matter content) = 2%

Red items indicate controversial ingredients

Estimated Nutrient Content
MethodProteinFatCarbs
Guaranteed Analysis19%15%NA
Dry Matter Basis19%15%59%
Calorie Weighted Basis16%32%52%
Protein = 16% | Fat = 32% | Carbs = 52%

The first ingredient in this dog food is water, which adds nothing but moisture to this food. Water is a routine finding in most canned dog foods.

The second ingredient is chicken. Chicken is considered “the clean combination of flesh and skin… derived from the parts or whole carcasses of chicken”.1

Chicken is naturally rich in the ten essential amino acids required by a dog to sustain life.

The third ingredient is barley. Barley is a starchy carbohydrate supplying fiber and other healthy nutrients. However, aside from its energy content, this cereal grain is of only modest nutritional value to a dog.

The fourth ingredient 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 fifth ingredient is pork liver. This is an organ meat sourced from a named animal and thus considered a beneficial component.

The sixth ingredient is dried whey, a by-product of the cheese industry. Dried whey consists of about 75% carbohydrate and can also contribute a limited amount of protein to a dog food.

It’s used in canned dog foods as a gelling agent and is an item with little nutritional value to a dog.

The seventh ingredient is beet pulp. Beet pulp is a controversial ingredient, a high fiber by-product of sugar beet processing.

Some denounce beet pulp as an inexpensive filler while others cite its outstanding intestinal health and blood sugar benefits.

We only call your attention here to the controversy and believe the inclusion of beet pulp in reasonable amounts in most dog foods is entirely acceptable.

The eighth ingredient is 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.

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 three notable exceptions

First, we find corn gluten meal. Gluten is the rubbery residue remaining once corn has had most of its starchy carbohydrate washed out of it.

Although corn gluten meal contains 60% 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.

Next, iron oxide is a synthetic color additive used in industry to impart a reddish color to food — and paint. In its natural form, this chemical compound is more commonly known as “iron rust”.

We’re always disappointed to find any artificial coloring in a pet food. That’s because coloring is used to make the product more appealing to humans — not your dog. After all, do you really think your dog cares what color his food is?

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 Science Diet
Adult Plus Canned Dog Food
The Bottom Line

Judging by its ingredients alone, Hill’s Science Diet Adult Plus canned dog food looks like an average wet product.

But ingredient quality by itself cannot tell the whole story. We still need to estimate the product’s meat content before determining a final rating.

The dashboard displays a dry matter protein reading of 19%, a fat level of 15% and estimated carbohydrates of about 59%.

As a group, the brand features an average protein content of 24% and a mean fat level of 17%. Together, these figures suggest a carbohydrate content of 51% for the overall product line.

And a fat-to-protein ratio of about 72%.

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

When you consider the protein-boosting effect of the corn gluten meal, this looks like the profile of a wet product containing only a limited amount of meat.

However, with 32% of the total calories in our example coming from fat versus just 16% from protein, some recipes may not be suitable for every animal.

Bottom line?

Hill’s Science Diet Adult Plus is a plant-based canned dog food using only a limited amount of poultry or beef as its main sources of animal protein, thus earning the brand 2 stars.

Not recommended.

Please note certain recipes are sometimes given a higher or lower rating based upon our estimate of their total meat content and (when appropriate) their fat-to-protein ratios.

Hill’s Science 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.

You can view a complete list of all dog food recalls sorted by date. Or view the same list sorted alphabetically by brand.

To learn why our ratings have nothing to do with a product’s recall history, please visit our Dog Food Recalls FAQ page.

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A Final Word

The descriptions and analyses expressed in this and every article on this website represent the views and opinions of the author.

The Dog Food Advisor does not test dog food products.

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Each review is offered in good faith and has been designed to help you make a more informed decision when buying dog food.

However, due to the biological uniqueness of every animal, none of our ratings are intended to suggest feeding a particular product will result in a specific dietary response or health benefit for your pet.

For a better understanding of how we analyze each product, please read our article, "The Problem with Dog Food Reviews".

Remember, no dog food can possibly be appropriate for every life stage, lifestyle or health condition. So, choose wisely. And when in doubt, consult a qualified veterinary professional for help.

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Have an opinion about this dog food? Or maybe the review itself? Please know we welcome your comments.

Notes and Updates

11/20/2016 Last Update

  1. Association of American Feed Control Officials
  • Zyekitty

    I feed my yorkie, Zyekies, Instinct canned. Instinct also has a limited ingredient line, which could be helpful. They do not have any grain, gluten, eggs, or dairy.

  • Diane

    I have been feeding my German Shorthaired Pointer, Peanut, Science Diet canned gourmet chicken for several years for one reason–despite the negative reviews, it is the only dog food we have found that does not give him constant diarrhea. We have tried Eagle Pack, Fromm’s, Pure Vita, Blue Buffalo among others with the same result. If someone could recommend a canned food that might be better, I would love to hear about it and get him off the Sci Di.

  • Pingback: All Different Dog Food Brands & Types | My Blog()

  • Shawna

    Deb ~~ unfortunately, your vet is giving you old information.  New science came out over 10 years ago showing how inaccurate the info your vet gave you is.

    Older dogs actually need more protein then adult dogs due to their general inability to digest as efficiently.  Several canine nutritionists and vets discuss this newer information.  I can give you links if you want — the nutritionists are Mary Straus and Lew Olsen and the vets are Dr. Karen Becker and Drs Foster and Smith.  Mary Straus and Lew Olsen have links to the newer studies on their websites.

    Also, if is now known that “protein” does not damage kidneys and lowering the protein level too much of a dog with kidney disease will cause death faster then putting the dog on a moderate but high quality protein diet.  In a dog with kd you would want to limit phosphorus (which is high in some meats but is also high in grains and other foods). 

    My dog was born with kidney disease and will be 6 years old the end of June 2012.  She is still, and has been since weening, on a HIGH protein raw diet.  She is doing fabulously!!

    Your vet, lots of vets, need to research the newer information…

    Here’s just one sampling (of many) of the new info —

    “Feeding the Older Dog from the SpeedyVet Clinical Nutrition Library “The assumption was that low-protein diets retarded the progression of renal degeneration. This assumption was disproved, using partially nephrectomised dogs, which showed no uraemic signs and had reduced but stable renal function for 48 months. These dogs did better on moderate-protein diets than on low-protein diets. There is no direct evidence that high protein intake damages canine kidneys or that reducing protein intake in dogs with renal dysfunction results in preservation of either renal structure or function.”  http://www.dogaware.com/health/kidneyprotein.html

  • Deb

    I just talked to my vet about our Blossom who is almost 7 yrs old and he indicated that she should be put on a dog food with 20% or less crude protein ; as he kidney level is up in one of the kidneys . He said this often happens in older dogs and usually you get great results by lowering the protein level as they are not as active. Hope that helps you.

  • Patricia

    I had fed my dog who is 10 years old, Science Diet Adult Senior Dog food for about 9 and l/2 years.  I changed to Fresh Pet Select (Chunky Chicken, Turkey, and vegetable and rice recipe) which is located in the refrigerated section of the grocery store and she absolutely loves it.  She has kept her weight down and it has made me very happy.  Today I went to the Vet and had blood work done on her (I was worried because she was having more difficulty jumping on the sofa, etc. and I wanted to make sure she was ok (She’s a Maltese).

    The Vet believes she has arthritis and I am going to start her on gluocsomine; however, the Vet also indicated that my  dog’s kidney results are up (not kidney disease tho) and it might become an issue at some point.

    Could the change in dog food to Fresh Pet Select cause this because she went from low protein dog food to higher protein dog food?

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