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Amino Acids - Feed Ingredient

Amino acids are the fundamental components of proteins and play essential roles in muscle development, enzyme activity, immune function, and overall metabolism in horses. They are classified as essential or non-essential based on whether they must be obtained from the diet or can be synthesized by the horse’s body. Essential amino acids, such as lysine, methionine, and threonine, must be provided in sufficient amounts to support protein synthesis and physiological functions.

In equine nutrition, amino acids are included in feeds and supplements to improve protein quality and ensure balanced nutrient intake. Lysine is considered the first limiting amino acid in horse diets, meaning its deficiency can restrict protein utilization even if total protein intake appears adequate. Methionine, another essential amino acid, is critical for hoof integrity, muscle maintenance, and metabolic processes but is often limited in plant-based protein sources. Proper amino acid balance is particularly important for young, growing horses, performance horses, and those on forage-based diets with lower-quality protein sources.

The following equine feeds, supplements and products contain Amino Acids as an ingredient.

Feeds, Supplements & Products
AminoTrace+ Vitamin and Mineral Supplement (Mad Barn)
Hoof HealthHoof Health
Metabolic SyndromeMetabolic Syndrome
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
AminoTrace+ by Mad Barn is a complete, balanced equine mineral and vitamin supplement designed for horses with metabolic concerns. It is ideal for horses with IR, PPID, or high iron in the diet.
DL-Methionine (Mad Barn)
Amino AcidAmino Acid
Coat QualityCoat Quality
Competition HorsesCompetition Horses
IngredientIngredient
Methionine is an essential amino acid that is important for maintaining healthy tendons, ligaments, and hooves. Growing horses and horses who are in heavy exercise have a higher demand for methionine and would benefit from supplementation.
L-Lysine (Mad Barn)
Amino AcidAmino Acid
ImmunityImmunity
IngredientIngredient
JointsJoints
Lysine is an essential amino acid that is important for forming strong collagen bonds. Lysine is the most commonly deficient amino acid in equine diets.
Omneity P – Pellets – Vitamin & Mineral Supplement (Mad Barn)
Gut HealthGut Health
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
Omneity Pellets is a balanced mineral and vitamin supplement for horses in a palatable pellet form. It provides 100% organic trace minerals, complete B-vitamin fortification, added Vitamin E, yeast and digestive enzymes.
Omneity Premix – Vitamin & Mineral Supplement (Mad Barn)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Omneity Premix is a balanced mineral and vitamin supplement for horses providing 100% organic trace minerals, complete B-vitamin fortification, added Vitamin E, yeast, and digestive enzymes.
Three Amigos (Mad Barn)
Amino AcidAmino Acid
MuscleMuscle
ProteinProtein
RecoveryRecovery
Three Amigos is an equine essential amino acid supplement containing lysine, methionine, and threonine in a 5:3:2 ratio. These are the three most common limiting amino acids in the horse's diet.
Threonine (Mad Barn)
Amino AcidAmino Acid
Gut HealthGut Health
MuscleMuscle
ToplineTopline
Threonine is an essential amino acid that is required to be supplied in equine diets as it cannot be synthesized endogenously. Threonine supplementation may improve nutrient absorption.
Visceral+ (Mad Barn)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
UlcersUlcers
YeastYeast
Visceral+ by Mad Barn is a pelleted supplement to be used for horses with gastric health concerns. It is designed to maintain stomach and hindgut health and to support the immune system.
CFS Big’Un 300 (Clarence Farm Services)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
CFS Big'Un 300 is a pelleted feed intended for broodmares, foals, and breeding stallions. It contains 16% protein, 4% fat, and 15% fibre. Big'Un 300 can be used as a creep feed for a nursing foal as they grow.
CFS Elevate ABF (Clarence Farm Services Limited)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
CFS Elevate ABF is a ration balancer that provides vitamins and minerals without significantly increasing calories in the diet. It is formulated with 12% protein and 4% fat, and can be fed alone or in combination with other feeds.
CFS Honesty ABF (Clarence Farm Services Limited)
CalmingCalming
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FiberFiber
CFS Honesty ABF is a pelleted feed for horses at various life stages. It provides moderate calorie density with energy primarily derived from fibre and vegetable fat.
CFS Horse Chow Checkers ABF (Clarence Farm Services)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
ProteinProtein
CFS Horse Chow Checkers is a pelleted high fibre complete feed targeted to mature, active horses or easy keepers. It contains 12.5% protein, 2% fat, and built-in roughage sources.
CFS Pro Horse 200 ABF (Clarence Farm Services Limited)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
VitaminsVitamins
CFS Pro Horse 200 ABF is a pelleted feed intended for leisure, pleasure, and performance horses. It contains no added fat and provides a medium energy density.
CFS Pro Horse 300 ABF (Clarence Farm Services)
BroodmareBroodmare
FoalFoal
GrowthGrowth
StallionStallion
CFS Pro Horse 300 is a coarse sweet feed intended for foals, broodmares, and stallions. This feed contains quality flaked grains to potentially increase digestibility. It has 16% protein, 4% fat, and 15% fibre.
CFS Select ABF 30% (Clarence Farm Services Limited)
FoalFoal
GrowthGrowth
LactationLactation
Ration BalancerRation Balancer
CFS Select ABF 30% is an essential vitamin and mineral supplement with 30% protein content. It is intended for lactating mares and foals to support growth and development.
Chelator Minerals (Equi-Boss Performance)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Chelator Minerals from Equi-Boss Performance is a complete mineral and vitamin supplement that is intended to contribute to overall health.
CJ (Platinum Performance)
ExerciseExercise
JointsJoints
Omega 3-6-9Omega 3-6-9
RecoveryRecovery
CJ by Platinum Performance is an equine joint supplement for performance and senior horses. Active ingredients include avocado-soy unsaponifiables (ASU), MSM, glucosamine, hyaluronic acid, and Boswellia serrata extract.
Classic Care (Lifeline)
Complete FeedComplete Feed
DigestionDigestion
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
Classic Care by Lifeline is a grain and molasses-free pelleted feed. It is intended for easy keepers and horses susceptible to metabolic disorders.
Coat Medic (AniMed)
Amino AcidAmino Acid
Coat QualityCoat Quality
Skin + HairSkin + Hair
VitaminsVitamins
Coat Medic from AniMed is a vitamin and mineral supplement that is meant to aid in the growth and maintenance of horses' coats, manes, and tails.
CocoHoof Pellets (Uckele)
Coat QualityCoat Quality
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
CocoHoof Pellets is an amino acid, fatty acid, mineral and vitamin supplement formulated to support skin health and hoof growth in horses. CocoHoof is recommended for all horses and ponies of all work levels.
Colorado Mix (HorseTech)
Amino AcidAmino Acid
Hoof HealthHoof Health
NutrientsNutrients
YeastYeast
Colorado Mix by HorseTech is a powdered supplement that contains added biotin and yeast to promote optimal hoof growth and strength.
Colostrum Supplement (Manna Pro)
FoalFoal
GrowthGrowth
Gut HealthGut Health
ProteinProtein
Colostrum Supplement by Manna Pro is a colostrum additive designed to be fed to newborn calves, kids, lambs, foals, piglets, llama, alpacas, puppies and kittens. It is milk protein-based and fortified with added vitamins and minerals.
Combined 4-Way (Equerry’s)
DigestionDigestion
JointsJoints
Skin + HairSkin + Hair
VitaminsVitamins
Combined 4-Way by Equerry's is a powdered supplement that intends to support digestive, hoof, coat and joint health in senior or performance horses.
Combo Senior Pellets (Leg Up Equine)
HealthHealth
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
Combo Senior Pellets from Leg Up Equine is a pelleted supplement for senior horses. It is meant to provide joint, hoof, skin and coat, and digestive support. It contains vitamins, minerals, and omega 3s.
Competitive Edge Equine (Stride Animal Health) – [Discontinued]
Amino AcidAmino Acid
AntioxidantAntioxidant
HealthHealth
Omega 3-6-9Omega 3-6-9
Competitive Edge Equine from Stride Animal Health is an amino acid supplement that also includes antioxidants and essential fatty acids. It is intended to support muscle and performance.
Competitor (Barastoc)
AntioxidantAntioxidant
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Competitor from Barastoc is a pelleted feed for performance horses. It contains both slow and fast release energy, and it is highly digestible and promotes gut health. It also contains antioxidants.
Complement Advantage (Excel Equine Feeds)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Complement Advantage by Excel Equine Feeds is a textured feed intended for hard keepers or horses in heavy training.
Complement Control (Excel Equine Feeds)
EnergyEnergy
HealthHealth
NutritionNutrition
PerformancePerformance
Complement Control by Excel Equine Feeds is a pelleted feed intended to provide nutrition with a low feeding rate for growing, performance, breeding and maintenance horses.
Complement Foundation (Excel Equine Feeds)
HealthHealth
ImmunityImmunity
NutrientsNutrients
NutritionNutrition
Complement Foundation by Excel Equine Feeds is a beet pulp based textured feed intended for all horse types.
Complete (Equis Feed)
Gut HealthGut Health
Mineral BalanceMineral Balance
VitaminsVitamins
YeastYeast
Complete by Equis Feeds is a high-protein, high-fiber and low-fat complete feed intended for adult horses. It is formulated with alfalfa, wheat middlings, molasses, organic minerals, and digestive aids.
Complete (Triple Crown)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Triple Crown Complete is a high-fibre feed with beet pulp and added vitamins and minerals designed for performance horses. This feed provides 12% protein and 12% fat in a textured format.
Complete (Woody’s Feed)
Complete FeedComplete Feed
FatFat
FiberFiber
ProteinProtein
Woody's Complete is a grain-free, pelleted horse feed formulated to meet the needs of most adult horses. Energy sources include beet pulp, soybean hulls, alfalfa meal, rice bran, flaxseed, and vegetable oil.
Complete Plus HA (Basic Equine Nutrition)
Amino AcidAmino Acid
Hoof HealthHoof Health
JointsJoints
NutrientsNutrients
Complete Plus HA is an equine joint supplement that provides a combination of minerals, vitamins and nutraceuticals. It contains hyaluronic acid, MSM, glucosamine, biotin, amino acids and flax.
Complete Supplement Pellets (Ritchie Smith – Harmony)
HealthHealth
NutrientsNutrients
NutritionNutrition
Ration BalancerRation Balancer
Complete Supplement Pellets from Ritchie Smith's Harmony is a vitamin, mineral, hoof, and gut supplement. Complete Supplement Pellets are intended for horses on forage-based diets, or horses with metabolic issues.
Compose Liquid (McIntosh ProLine)
CalmingCalming
HealthHealth
PerformancePerformance
StressStress
Compose Liquid from McIntosh ProLine is a liquid supplement meant to calm horses during stressful times such as transport or competitions.
Comprehensive Feed Balancer (TopSpec)
Gut HealthGut Health
Hoof HealthHoof Health
Ration BalancerRation Balancer
YeastYeast
Comprehensive Feed Balancer from TopSpec is a palatable and pelleted ration balancer. This ration balancer contains yeast to support digestive health and biotin to support hoof health. This feed is ideal for horses and ponies of any age or work level.
Constant Comfort Plus (Tribute)
Competition HorsesCompetition Horses
DigestionDigestion
HindgutHindgut
YeastYeast
Constant Comfort Plus from Tribute is a pelleted gut supplement for horses. Constant Comfort Plus is formulated with seaweed-derived calcium, aloe vera, glutamine and lecithin. This gut supplement is intended to help support the horse's digestive tract.
Cool & Safe (Thomas Moore Feed)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
NutrientsNutrients
Cool & Safe is a complete feed from Thomas Moore Feed. It is low in starch and sugars and contains minerals, vitamins, and postbiotics. It is intended to provide energy through fat and fiber for training or exercising horses.
Cool + Zen (Durwell Equine Naturals)
CalmingCalming
PerformancePerformance
RecoveryRecovery
StressStress
Cool + Zen by Durwell Equine Naturals is a calming supplement containing magnesium, ashwagandha root extra and L-theanine. It is intended to promote calm and focus in horses experiencing stress.
Cool Carb (Banks Mill Feeds)
FiberFiber
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Banks Cool Carb is a low sugar and starch feed with 10.5% NSC, intended for horses with gut issues and insulin resistance. This feed contains soybean hulls, wheat middlings, alfalfa meal and beet pulp.
Cool Command Balancer 30 (Hubbard Feeds)
Mineral BalanceMineral Balance
PrebioticPrebiotic
ProteinProtein
VitaminsVitamins
Cool Command Balancer 30 by Hubbard is a ration balancer that is meant to supply vitamins and organic minerals. It provides energy from plant proteins and grain products.
Cool Command Senior Horse (Hubbard Feeds)
Coat QualityCoat Quality
DigestionDigestion
JointsJoints
SeniorSenior
Cool Command Senior Horse by Hubbard is a higher fat complete feed intended for senior horses with dental issues or joint health concerns. It contains 14% protein and 8% fat, with added MSM, chondroitin sulfate and glucosamine.
Cool Crunch (Pegasus)
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
HindgutHindgut
Cool Crunch by Pegasus is a feed that contains highly digestible fiber to support gut health and minimize glycemic response in horses and ponies.
Cool Fusion (Lifeline)
EnergyEnergy
FatFat
FiberFiber
NutritionNutrition
Cool Fusion by Lifeline is a high-fat, high-fiber feed formulated for performance horses and stallions. This feed contains 12% protein, 12% fat, and 14% fiber.
Cool Gut (DAC)
DigestionDigestion
Gut HealthGut Health
PrebioticPrebiotic
StressStress
Cool Gut by dac is a gastric health supplement intended to support horses in exercise and training.
Cool Stride (Banks Mill Feeds)
Easy KeeperEasy Keeper
FiberFiber
NutrientsNutrients
ProteinProtein
Cool Stride is a low NSC (12.4%) textured horse feed intended for easy keepers and boarding facilities. It contains added calcium meant to buffer stomach acid and added chromium meant to support metabolic health.
Cool Time (Capstone Horse Feed)
DigestionDigestion
EnergyEnergy
NutritionNutrition
PerformancePerformance
Cool Time by Capstone Horse Feed is a high energy, oat-free feed intended for high performance horses that are prone to tying up, excitability and excessive sweating.
Cool-Care (Beyond-Soy)
Complete FeedComplete Feed
Grain FreeGrain Free
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Cool-Care by Beyond-Soy is a grain-free complete feed with low levels of sugar and starch. It is intended to be used for horses in all stages and assist with digestive health.
Country Feeds Adult 12 Textured (Nutrena) [Discontinued]
DigestionDigestion
Hoof HealthHoof Health
MuscleMuscle
NutritionNutrition
Country Feeds Adult 12 Textured is a textured complete feed formulated for all activity levels of mature horses. It provides 12% protein, 6% fat, and 24% NSC.
Country Feeds Complete (Nutrena)- [Discontinued]
Complete FeedComplete Feed
EnergyEnergy
NutritionNutrition
ProteinProtein
Country Feeds Complete is a high fibre complete feed designed to provide 12% protein, 3% fat, and 22% NSC. It is marketed as a hay replacement.
CR ProFibre Crunch (Trouw Nutrition)
Complete FeedComplete Feed
FiberFiber
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
CR ProFibre Crunch is a mixed high fibre pellet and extruded feed with less than 10% NSC content. Energy sources include soy hulls, alfalfa, and beet pulp. ProFibreCrunch also contains flax as a source of omega-3 fatty acids.
Critical Care Metabolic Support (Natural Horse Vet)
MetabolismMetabolism
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
VitaminsVitamins
Critical Care Metabolic Support by Natural Horse Vet is a powdered supplement intended to support horses with insulin resistance, proper weight management, and thyroid function.
Cut’n Slide (Running Horse Elite Equine Nutrition)-[Discontinued]
EnergyEnergy
ExerciseExercise
PerformancePerformance
Ration BalancerRation Balancer
This feed has been renamed and repackaged to Prime Running Horse Feeds. Running Horse Cut n’ Slide was a nutritional supplement containing vegetable fat, soluble fibers, vitamins, and minerals. It was targeted at performance horses with higher caloric needs.
DAC Bloom (DAC)
FatFat
NutrientsNutrients
ProteinProtein
Skin + HairSkin + Hair
Bloom by DAC provides protein and minerals to support hoof and coat quality. Bloom contains 30% protein and 32% fat, to provide additional calories to assist in weight gain or maintenance during exercise.
DAC Colt Grower (DAC)
Amino AcidAmino Acid
FoalFoal
GrowthGrowth
YeastYeast
Colt Grower by DAC provides vitamins and minerals for young horses. A proper vitamin and mineral balance is essential for development, as well as hoof and coat quality.
Daily Amino (Enviro Equine)
Amino AcidAmino Acid
MuscleMuscle
ProteinProtein
Skin + HairSkin + Hair
Daily Amino by Enviro Equine is an essential amino acid supplement intended to support muscle development, connective tissue, the immune system, healthy hooves, and skin and coat. It is suitable for growing horses, horses in training, and those needing support for protein metabolism.
Daily Balancer (Spillers Feeds)
Amino AcidAmino Acid
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Daily Balancer from Spillers Feed is cereal grain-free, low in sugar and starch, and has no added iron. This feed is intended for horses and ponies fed a forage-based diet.
Daily Combo (Empire Research)
Competition HorsesCompetition Horses
DigestionDigestion
IngredientIngredient
YeastYeast
Daily Combo from Empire Research is an equine digestion supplement. Daily Combo is formulated with vitamins, minerals, prebiotics, probiotics and yeast. This supplement is intended to support horses' gut function.

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