Ingredient file // Animal protein
Dried Chicken Cartilage
Real cartilage, unproven relief for sore joints
Dried chicken cartilage is connective tissue separated during poultry processing and dried for use in food. It adds protein and cartilage compounds, including chondroitin sulfate. The amount in a finished food is unknown, and joint relief from that food has not been shown.
- What it is
- Chicken connective tissue, often from the breastbone, with its water removed for use in pet food.
- Made from
- Cartilage separated from processed chickens
- Main job
- Cartilage for joint claims
- Typical amount
- Not published
- Watch for
- Dogs with a diagnosed chicken allergy
- Not the same as
- Measured joint supplements
Our read // In our catalog
In 1 of every 260 foods we track
Share of foods that list it
0%
10 of the 2,595 foods with an ingredient list on file, from 4 brands. All dry dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 20. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 80% of foods.
Price per lb
Median of the cheapest bag price across 8 priced foods, 34% below the catalog. The price is the food's, not the ingredient's.
Who leans on it
60%
of the foods that list it are from Simply Nourish. 4 brands use it in total.
What it is
How it is made
Removing breast fillets leaves cartilage at the keel of the chicken skeleton. A processor can separate and dry that tissue for another use. Published research describes the raw material, but the ingredient name does not identify a commercial drying method.4,8
- 01 // Source Keel cartilage Flexible cartilage connects the breast muscle area to the tip of the chicken's breastbone.
- 02 // Process Separated After breast fillets are removed, keel cartilage is cut from the carcass.
- 03 // Process Dried Water is removed; the ingredient name does not specify whether the supplier uses heat or another drying method.
- 04 // Output Dried cartilage The dry tissue reaches the food maker as chicken cartilage, without a stated collagen or chondroitin concentration.
What is in it
Composition, dry matter
90.3
% protein
Crude protein in keel cartilage sampled for one study. That figure does not tell you how much cartilage a food contains or whether its protein is balanced.
Why it is in the bag
What the manufacturer gets
-
01
Supplies cartilage compounds
Chicken keel cartilage contains chondroitin sulfate. Adding the tissue lets a maker include that compound, although the ingredient list does not disclose the amount delivered in a serving.5,8
-
02
Adds animal protein
The dried tissue contributes crude protein, including collagen. Its protein count contributes to the food's total, but the ingredient name gives no measure of its share.4,8
-
03
Uses a poultry leftover
Keel cartilage remains after breast fillets are removed. Researchers describe it as an inexpensive source of chondroitin sulfate, giving processors another outlet for the tissue.4,6
How much A typical amount in kibble is not published; the dog joint trials tested measured supplements rather than dried cartilage in a complete food.1,2,3
Our read // The claims
What the evidence supports
Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.
-
Brands say
Chicken cartilage is a natural chondroitin source
Evidence
- Strong
- Some
- Thin
- None
An extraction study measured chondroitin sulfate at 17.69% of dry raw keel cartilage, and another extracted it from freeze dried keel cartilage. Its presence is supported; neither study measured a serving of dog food.5,6
-
Brands say
Chicken cartilage relieves a dog's arthritis pain
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 75-dog placebo-controlled trial found no gait benefit from measured glucosamine and chondroitin supplements. A 35-dog trial without a placebo group reported improvement. Neither tested dried cartilage in food. The newer trial's funding attribution was corrected.1,3,10
-
Brands say
It protects active dogs' joint cartilage
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A company-funded trial gave 40 healthy Labradors a measured UC-II capsule or placebo and found differences in exercise-related markers. It did not test dried cartilage in food or show prevention of joint disease.2
-
Brands say
Eating cartilage rebuilds damaged joints
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
The 75-dog arthritis trial measured walking force, while the 40-dog Labrador trial measured activity and blood markers. Neither measured new cartilage growth. A food listing dried cartilage has no demonstrated rebuilding effect.1,2
Straight answers
What owners ask
-
Q01
Is it just filler?
NoCartilage contributes protein and contains chondroitin sulfate. One keel cartilage study measured 90.3% crude protein on a dry basis. That makes it an ingredient with a nutritional role, though its amount in the food is undisclosed.4,5,8
-
Q02
Is it the same as UC-II?
NoThe Labrador study used a 40 mg UC-II capsule containing 10 mg of type II collagen. A bag listing dried chicken cartilage promises neither that preparation nor that measured dose.2
-
Q03
How much chondroitin does it give?
Label dependentAn ingredient list ranks ingredients by weight but gives no quantity for each one. Look for a stated chondroitin amount in the food's analysis or product information; the cartilage name alone cannot supply it.8
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Usually listed with, share of the foods that list it
- Chicken Fat 70%
- Natural Flavor 70%
- Flaxseed 60%
- Pea Fiber 60%
- Brown Rice 60%
- Chicken 50%
- Oatmeal 50%
- Turkey Meal 40%
- Rye Flour 40%
- Chicken Meal 30%
- Dried Peas 30%
- Turkey 30%
Our read // On the bag
Read the dose before trusting the joint claim
Check the meat sources around dried chicken cartilage and the food's full nutrient analysis. Its place on the list tells you it was added, but not how much chondroitin your dog receives. If joint support matters, look for a stated amount and judge the complete food on its merits.
Sources
What we read
Checked October 1, 2026.
- 1 Study of the effectiveness of glucosamine and chondroitin sulfate, marine based fatty acid compounds (PCSO-524 and EAB-277), and carprofen for the treatment of dogs with hip osteoarthritis: A prospective, block-randomized, double-blinded, placebo-controlled clinical trial
- 2 Undenatured type II collagen mitigates inflammation and cartilage degeneration in healthy Labrador Retrievers during an exercise regimen
- 3 Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis
- 4 Collagen production from chicken keel bone using acid and enzymatic treatment at a temperature of 30 °C
- 5 Release of chondroitin sulfate form the chicken keel cartilage by protamex hydrolysis
- 6 Study on extraction of mucopolysaccharide-protein containing chondroitin sulfate from chicken keel cartilage
- 7 Critically appraised topic on adverse food reactions of companion animals (2): common food allergen sources in dogs and cats
- 8 Reading Labels
- 9 Compliance Policy Guide Sec. 690.800 Salmonella in Food for Animals Final
- 10 Corrigendum: Study of the effectiveness of glucosamine and chondroitin sulfate, marine based fatty acid compounds (PCSO-524 and EAB-277), and carprofen for the treatment of dogs with hip osteoarthritis: a prospective, block-randomized, double-blinded, placebo-controlled clinical trial