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L-Threonine - Feed Ingredient

L-Threonine is an essential amino acid necessary for protein synthesis, muscle maintenance, and immune function in horses. Since it cannot be produced by the horse’s body, it must be obtained through the diet.

In equine nutrition, L-Threonine is one of the first limiting amino acids, meaning its availability directly affects protein utilization and muscle development. It plays a vital role in gut health, supporting mucus production in the digestive tract, which aids nutrient absorption and protects intestinal integrity. L-Threonine supplementation is often used in diets for growing, performance, or recovering horses to optimize protein efficiency and support overall metabolic function.

The following equine feeds, supplements and products contain L-Threonine 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.
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.
12-12 Performance Horse (Matrix)
ExerciseExercise
FatFat
PerformancePerformance
ProteinProtein
12-12 Performance Horse by Matrix is a textured feed that provides high fat (12%) and moderate protein (12%) intended for performance horses.
14% Performance (Running Horse)
Complete FeedComplete Feed
GrowthGrowth
LactationLactation
PerformancePerformance
Running Horse Performance is a texturized 14% protein and 6% fat feed formulated for performance, breeding and growing horses. It provides a higher energy density for equine athletes.
Accelerate (Right Choice)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Accelerate is a textured complete feed with 12% protein and 8% fat. It is formulated for performance horses with added yeast and a combination of organic and inorganic minerals.
Accelerate GH (Right Choice)
FatFat
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Accelerate GH is a pelleted complete feed with 12% protein, 8% fat, and 24% NSC. It contains organic minerals as well as pre and probiotics for digestive support.
Acid Ease (Protexin Equine)
Gut HealthGut Health
HealthHealth
HindgutHindgut
ProbioticProbiotic
Acid Ease by Protexin Equine is a powdered gut supplement designed for all working classes of horses. It is formulated with calcium carbonate, pre-, pro, and postbiotics, and L-theronine.
Alfa Essentials (Tribute)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Alfa Essentials is a ration balancer formulated for diets that contain greater than 50% legume forages such as alfalfa. It provides higher phosphorous than calcium to balance elevated levels of calcium.
Alfa Growth (Tribute Equine)
Complete FeedComplete Feed
FatFat
GrowthGrowth
LactationLactation
Tribute Alfa Growth® is a textured feed for growing horses and pregnant or lactating broodmares that are consuming 50% or more legume forages such as alfalfa hay.
Alfa Prime (Running Horse)
EnergyEnergy
ExerciseExercise
Feed EfficiencyFeed Efficiency
PerformancePerformance
Alfa Prime is a complete extruded feed intended for equine athletes with 14% protein and 8% fat. It is formulated with digestible fibre from alfalfa meal and soybean hulls and utilizes vegetable oil, rice bran and flaxseed as fat sources.
Alfalfa Advantage (ProElite)
Mineral BalanceMineral Balance
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
ProElite Alfalfa Advantage is a low-feeding rate pelleted ration balancer intended to balance diets composed of alfalfa forages. It can be fed to all classes of horses.
All Phase (Lifeline)
FiberFiber
Grain FreeGrain Free
Mineral BalanceMineral Balance
VitaminsVitamins
All Phase from Lifeline is a pelleted ration balancer intended for all horse types. This ration balancer contains 20% protein.
Amber Grains Classic 12-4 Fiberwise (Coker Feed Mill)
DigestionDigestion
Easy KeeperEasy Keeper
FiberFiber
RecoveryRecovery
Amber Grains Classic 12-4 Fiberwise by Coker Feed Mill is a high-fiber (20%) textured feed intended for easy keepers and horses in recovery.
Amber Grains Classic 12-6 Textured (Coker Feed Mill)
NutrientsNutrients
NutritionNutrition
PrebioticPrebiotic
ProbioticProbiotic
Amber Grains Classic 12-6 Textured by Coker Feed Mill is a textured feed intended to supplement hay. It is designed for active horses not in heavy work.
Amber Grains Classic Senior Textured (Coker Feed Mill)
DigestionDigestion
FiberFiber
Gut HealthGut Health
SeniorSenior
Amber Grains Classic Senior Textured by Coker Feed Mill is a textured feed intended to support digestion and body condition in senior horses.
Amber Grains Elite 10-10 Performance (Coker Feed Mill)
DigestionDigestion
EnergyEnergy
MuscleMuscle
PerformancePerformance
Amber Grains Elite 10-10 Performance by Coker Feed Mill is a high calorie textured feed intended to support digestion, muscle gain and endurance in performance horses.
Amber Grains Elite 12-12 Performance (Coker Feed Mill)
DigestionDigestion
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Amber Grains Elite 12-12 Performance by Coker Feed Mill is a textured feed intended to provide cool energy for performance horses.
Amber Grains Elite Front Runner (Coker Feed Mill)
Caloric EnergyCaloric Energy
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
Amber Grains Elite Front Runner by Coker Feed Mill is a high-energy feed intended for performance. It is formulated to support strength, stamina and endurance in horses.
Amber Grains Elite Mare and Foal (Coker Feed Mill)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Amber Grains Elite Mare and Foal by Coker Feed Mill is a textured feed intended to support overall health in pregnant mares, lactating mares and growing foals.
Amber Grains Elite Serenity Ultra LS (Coker Feed Mill)
HealthHealth
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
SeniorSenior
Amber Grains Elite Serenity Ultra LS by Coker Feed Mill is a low NSC (8.94%) pelleted feed intended for horses with sensitive digestive systems.
Amber Grains Elite Super Senior (Coker Feed Mill)
DigestionDigestion
FiberFiber
ProbioticProbiotic
SeniorSenior
Amber Grains Elite Super Senior by Coker Feed Mill is a textured feed intended to support overall health and digestion in senior horses.
Amino Edge (Bluebonnet Feeds)
Amino AcidAmino Acid
MuscleMuscle
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Amino Edge by Bluebonnet Feeds is an amino acid supplement that also includes antioxidants and essential fatty acids. It is intended to support muscle and performance.
Amino Max Extra Strength (Basic Equine Nutrition)
Amino AcidAmino Acid
GrowthGrowth
HealthHealth
MetabolismMetabolism
Amino Max Extra Strength is a combination of three essential amino acids: lysine, threonine and methionine. These amino acids are the most-limiting in equine diets. Supplementation may support topline, gut health and more.
Balancer (Triple Crown)
Easy KeeperEasy Keeper
Metabolic SyndromeMetabolic Syndrome
NutritionNutrition
Ration BalancerRation Balancer
Triple Crown® Balancer is a pelleted mineral and vitamin supplement providing 30% protein, 3% fat and 5% fibre. This ration balancer contains essential amino acids, vitamins, macro minerals, trace minerals, bacteria and enzymes.
Balancer Gold (Triple Crown)
Easy KeeperEasy Keeper
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Ration BalancerRation Balancer
Balancer Gold is a soy-free ration balancer with 13.5% protein, 4.5% fat and 14.2% NSC. It has a lower feeding rate and can be used alone or in combination with other complete feeds or feed ingredients.
BiAaMuGen (Hoffman’s Horse Products)
Amino AcidAmino Acid
Competition HorsesCompetition Horses
HealthHealth
StaminaStamina
BiAaMuGen from Hoffman's Horse Products is a pelleted protein supplement for horses intended to be fed top-dressed. BiAaMuGen is intended to be fed to horses who require additional muscle mass.
Biotin Complete (Peak Performance Nutrients)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Biotin Complete by Peak Performance Nutrients is meant to support hoof health for horses that suffer from dry hooves or cracked walls. This supplement contains 20mg of Biotin per serving.
Blitz! Pak (Peak Performance Nutrients)
ElectrolyteElectrolyte
HerbHerb
Mineral BalanceMineral Balance
VitaminsVitamins
Blitz! Pak by Peak Performance Nutrients is a vitamin and mineral supplement which is intended to be provided before a horse event. It contains electrolytes, amino acids, and a blend of herbs.
Blitz! Paste Comfort Blend (Peak Performance Nutrients)
ExerciseExercise
HerbHerb
RecoveryRecovery
StaminaStamina
Blitz! Paste Comfort Blend by Peak Performance Nutrients is a vitamin and mineral supplement intended to be provided before a horse event. It contains electrolytes and amino acids intended to aid performance and recovery.
Blitz! Paste Original Formula (Peak Performance Nutrients)
ElectrolyteElectrolyte
PerformancePerformance
RecoveryRecovery
StaminaStamina
Blitz! Paste Original Formula is a vitamin and mineral supplement meant to be provided before a horse event. It contains electrolytes, amino acids, and a blend of herbs intended to aid performance during the event and recovery.
Blue Ribbon 12+ (Seminole) – [Discontinued]
Competition HorsesCompetition Horses
GrowthGrowth
LactationLactation
PerformancePerformance
Seminole Blue Ribbon 12+ is a now-discontinued textured horse feed targeted to growing, breeding and performance horses. It provides 12% protein with added lysine.
Blue Ribbon High Efficiency (Seminole) – [Discontinued]
Complete FeedComplete Feed
FatFat
GrowthGrowth
ProteinProtein
Seminole Blue Ribbon High Efficiency is a now-discontinued feed targeted to growing, breeding and performance horses. This high-fat textured feed contains added lysine.
California Trace Plus
Competition HorsesCompetition Horses
ExerciseExercise
ImmunityImmunity
RecoveryRecovery
California Trace Plus is an equine trace mineral and vitamin supplement with added yeast. It provides organic trace minerals and live Saccharomyces cerevisiae cultures.
Calming Pro Complete (Formula 707)
CalmingCalming
DigestionDigestion
Gut HealthGut Health
StressStress
Calming Pro Complete from Formula 707 is a pelleted calming supplement. It is meant to support digestion, stomach health, and nervous system health.
Camelina Meal (Lozana Health)
Coat QualityCoat Quality
DigestionDigestion
Hoof HealthHoof Health
RecoveryRecovery
Camelina Meal by Lozana Health is a protein supplement intended to support overall health in all classes of horses.
Carb-Guard – 12% Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
Blue Seal Carb-Guard is a 12% protein and 8% fat pelleted complete feed with less than 11% NSC. It is formulated with various roughages for fibre as well as wheat middlings, corn germ, and dried distillers grains for energy.
CarbCare Performance (Legends)
Complete FeedComplete Feed
EnergyEnergy
FatFat
PerformancePerformance
Legends CarbCare Performance is a pelleted feed for adult performance horses engaging in moderate exercise. It provides 10% fat to meet energy requirements and support endurance.
CarbCare Show & Pleasure (Legends)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
PerformancePerformance
Legends CarbCare Show & Pleasure is a pelleted feed for adult horses in light to moderate activity. It lists a maximum NSC of 20%, based on 15% starch and 5% sugar content.
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.
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.
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 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.
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.
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.
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.
DailyWerks HD (HorseTech)
Hoof HealthHoof Health
JointsJoints
PerformancePerformance
Ration BalancerRation Balancer
DailyWerks HD by HorseTech is a powdered ration balancer intended to support hoof and joint health in horses in heavy work.
DailyWerks LD (HorseTech)
HealthHealth
Hoof HealthHoof Health
JointsJoints
Ration BalancerRation Balancer
DailyWerks LD by HorseTech is a daily ration balancer intended to provide hoof and joint support.
Developer Ration (Hoffman’s Horse Products)
BroodmareBroodmare
FoalFoal
Grain FreeGrain Free
GrowthGrowth
Hoffman's Developer Ration is a pelleted feed for weanlings, growing horses up to two years of age, and pregnant broodmares. This feed contains 17% protein, 5.5% fat, 17.5% NSC, and provides a mix of organic and inorganic trace minerals.
Diamond Balancer (Triple Crown)
Easy KeeperEasy Keeper
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
NutrientsNutrients
Diamond Balancer by Triple Crown is a grain-free pelleted balancer formulated for adult horses with metabolic concerns. It provides 14% protein, 3% fat, and 15% fiber (as fed).
Diamond Perform (Triple Crown)
AntioxidantAntioxidant
FatFat
Gut HealthGut Health
PerformancePerformance
Diamond Perform from Triple Crown is a pelleted feed that is high in fat and fiber. It is intended for performance horses and is meant to assist with gut health and immunity.
Diamond Senior (Triple Crown)
FatFat
FiberFiber
NutrientsNutrients
SeniorSenior
Diamond Senior by Triple Crown is a high-fat, high-fiber feed specifically formulated for senior horses. It includes beet pulp as a fermentable fiber source to support optimal calorie intake.
Diamond Smart Pellet (Triple Crown)
ForageForage
HealthHealth
PerformancePerformance
SeniorSenior
Diamond Smart Pellet by Triple Crown is a Teff hay pellet fortified with vitamins and minerals. It is intended for performance and mature horses.

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