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NutriSource vs Kirkland Signature

NutriSource vs. Kirkland Signature

In this comparison article for NutriSource vs Kirkland Signature, we'll highlight the key differences between these two pet food brands. To properly compare NutriSource and Kirkland Signature, we'll use up-to-date nutritional and price information.

There are many factors to consider when choosing the best pet food brand for your pet. Factors such as ingredient quality, guaranteed analysis, product safety, brand history, and cost are among the most important factors to consider.

Throughout this Kirkland Signature vs NutriSource comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our NutriSource Review Page or Kirkland Signature Review Page.

Guaranteed Analysis: Kirkland Signature vs. NutriSource

According to AAFCO, all pet food labels must provide a guaranteed analysis of nutrient content. The analysis must provide guaranteed minimum percentages of crude protein and crude fat, and maximum percentages of crude fiber and moisture.

All percentages used in this comparison are averages reported on a dry matter basis.

NutriSource Dog Food vs. Kirkland Signature Dog Food

Dry Dog FoodNutriSourceKirkland Signature
Crude Protein28.9%27.5%
Crude Fat16.8%15.3%
Crude Fiber7.1%5.4%
Wet/Canned Dog FoodNutriSourceKirkland Signature
Crude Protein43.4%44.4%
Crude Fat33.0%27.8%
Crude Fiber7.2%5.6%

Crude Protein Comparison For Dog Food

Protein is an extremely important part of your dog's diet. Without sufficient protein, dogs can develop a wide-range of serious health problems.

Kirkland Signature and NutriSource both provide roughly the same amount of crude protein. With regards to wet dog food, Kirkland Signature and NutriSource also provide roughly the same amount of crude protein.


Crude Fat Comparison For Dog Food

Fats are an absolutely vital component of a balanced canine diet. Not only do fats provide energy, but they also serve important roles in the normal development and function of your dog's body. For example, fats help dogs produce prostaglandins, which reduce inflammation among many other significant functions.

There is a relatively insignificant difference between the crude fat content of the two brands. For wet dog foods, NutriSource provides more fat (about 5.26% more).


Both brands provide roughly the same amount of crude fiber. With regards to wet dog food, NutriSource and Kirkland Signature also provide roughly the same amount of crude fiber.

NutriSource Cat Food vs. Kirkland Signature Cat Food

Dry Cat FoodNutriSourceKirkland Signature
Crude Protein36.4%34.8%
Crude Fat17.9%15.9%
Crude Fiber7.8%5.9%

Crude Protein Comparison For Cat Food

Protein is an extremely important part of your cat's diet. Without sufficient protein, cats can develop a wide-range of serious health problems.

As you can see, Kirkland Signature and NutriSource guarantee a similar amount of crude protein.


Crude Fat Comparison For Cat Food

There are many ways in which dietary fat contributes to the overall health of our feline friends. Here is a short list of benefits provided by fats (not exhaustive):

  • Fats help with the digestion and absorption of fat-soluble vitamins
  • Reduce inflammation associated with arthritis
  • Slow the growth of yeast infections
  • Prevent or reduce the likelihood of certain heart problems.
  • Aid in the development of the retina and visual cortex.

NutriSource Pet Food Ingredients vs. Kirkland Signature Pet Food Ingredients

NutriSource and Kirkland Signature both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein

Here are some of the controversial ingredients used only by NutriSource.

Garlic
White Rice
Brewers Rice
Dried Tomato Pomace

Here are some of the controversial ingredients used only by Kirkland Signature.

Tomato Pomace
Powdered Cellulose
Organic Canola Meal
Organic Pea Protein
Canola Oil (Preserved With Mixed Tocopherols)
Organic Canola Oil (Preserved With Mixed Tocopherols)

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Here are some of the harmful ingredients used only by NutriSource.

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of NutriSource & Kirkland Signature?

According to our records, neither brand has issued any product recalls. Therefore, consumers have no reason to question the safety of NutriSource or Kirkland Signature pet food products.


Disclosure: PawDiet has an affiliate relationship with stores featured (or linked-to) in this article. We are compensated for referring customers. Thank you for shopping with our retail partners!

Where To Buy NutriSource Pet Foods

You can purchase NutriSource pet foods from the following stores:


75 Recipes In-Stock Today

30 Recipes In-Stock Today

Where To Buy Kirkland Signature Pet Foods

You can purchase Kirkland Signature pet food products from these retailers:


Type Of Pet Foods Available

ProductNutriSourceKirkland Signature
Dry Dog Food41 Recipes12 Recipes
Wet Dog Food13 Recipes1 Recipes
Dog Treats11 TreatsNone
Dry Cat Food8 Recipes3 Recipes
Wet Cat Food10 RecipesNone
Cat TreatsNoneNone

Top Rated NutriSource Recipes

Dog Food
NutriSource
Pure Vita Turkey & Sweet Potato Entrée
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Dog Food
NutriSource
Wet Dog Food Chicken, Lamb & Ocean Fish Recipe
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Cat Food
NutriSource
Pure Vita Chicken & Peas Entree
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Cat Food
NutriSource
Grain Free Cat Food Country Select
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Top Rated Kirkland Signature Recipes

Dog Food
Kirkland Signature
(Costco) Super Premium Lamb, Rice & Vegetable Formula For Adult Dogs
Check Price
Dog Food
Kirkland Signature
(Costco) Super Premium Chicken, Rice & Vegetable Formula For Puppies
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Dog Food
Kirkland Signature
(Costco) Nature's Domain Turkey & Pea Stew For Dogs
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Cat Food
Kirkland Signature
(Costco) Nature's Domain Salmon Meal & Sweet Potato Recipe Cat Food
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