University > Nutrient Hierarchy > Nutrient Sub-Types
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Nutrient Sub-Types

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The Nutrient Sub-Type category refines Nutrient Types into even more specific groups, such as omega-3 and omega-6 fats, soluble and insoluble fiber, or essential and non-essential amino acids. These sub-types highlight the precise functional roles of nutrients in supporting targeted aspects of a dog’s health.
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Enzymes Enzymes
Enzymes
Enzymes
Enzymes are specialized proteins that speed up chemical reactions in a dog’s body. Digestive enzymes, such as protease, lipase, and amylase, break down food into nutrients that dogs can absorb and use. While healthy dogs often produce enough enzymes naturally, supplemental enzymes can support digestion for dogs on modern processed diets, those with digestive issues, or those consuming plant-heavy meals.
Collagen Collagen
Collagen
Collagen
Collagen is a structural protein that provides strength and elasticity to skin, joints, tendons, and connective tissue. It is rich in glycine, proline, and hydroxyproline and is commonly sourced from bone broth and animal cartilage.
Conditionally-Essential Amino Acids Conditionally-Essential Amino Acids
Conditionally-Essential Amino Acids
Conditionally-Essential Amino Acids
Conditionally-Essential Amino Acids are non-essential amino acids that become essential during stress, illness, or rapid growth. Examples include glutamine and arginine, which support immune function and tissue repair.
Non-Essential Amino Acids Non-Essential Amino Acids
Non-Essential Amino Acids
Non-Essential Amino Acids
Non-Essential Amino Acids are amino acids that dogs can synthesize on their own, meaning they don’t need to be supplied in the diet under normal conditions.
Essential Amino Acids Essential Amino Acids
Essential Amino Acids
Essential Amino Acids
Essential Amino Acids are amino acids that dogs must obtain from food, as they cannot be synthesized internally. These include lysine, methionine, and taurine, which are critical for growth, muscle maintenance, and overall health.
Insoluble Fiber Insoluble Fiber
Insoluble Fiber
Insoluble Fiber
Insoluble Fiber does not dissolve in water and passes through the digestive tract largely intact, adding bulk to stool and keeping things moving. It helps promote regular, firm bowel movements, prevent constipation, and support anal gland health. Key sources include flaxseed, miscanthus grass, and vegetable fibers, which are often used in digestive support and stool consistency supplements.
Soluble Fiber Soluble Fiber
Soluble Fiber
Soluble Fiber
Soluble Fiber dissolves in water and turns into a gel-like substance in the gut, slowing digestion and feeding beneficial gut bacteria. This helps support a healthy microbiome, regulate stool consistency, and balance blood sugar levels. It also softens stool, making it easier to pass. Found in pumpkin, flaxseed, and chicory root, soluble fiber is commonly used in gut health and stool-quality supplements.
Omega-3 Fats Omega-3 Fats
Omega-3 Fats
Omega-3 Fats
Omega-3 fatty acids are healthy fats that dogs can’t make on their own and must get through food or supplements. They keep cells flexible and functioning properly, which supports healthy skin, a shiny coat, and strong heart, joint, and brain health. Omega-3s also help control inflammation, allowing the body to recover efficiently and maintain overall comfort and resilience.
Omega-6 Fats Omega-6 Fats
Omega-6 Fats
Omega-6 Fats
Omega-6 fatty acids are essential polyunsaturated fats that support immune function, skin health, and cell growth. While necessary for overall well-being, they need to be balanced with omega-3 fatty acids, as excess omega-6 relative to omega-3 can contribute to inflammation in dogs.