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L-Lysine - Feed Ingredient

L-Lysine is an essential amino acid that plays a vital role in protein synthesis, tissue repair, and growth in horses. It is one of the key building blocks of proteins and is necessary for the production of enzymes, hormones, and antibodies. Since horses cannot synthesize L-Lysine on their own, it must be obtained through their diet.

In equine nutrition, L-Lysine is often included in feed formulations and supplements to ensure adequate levels of this essential amino acid. It is particularly important for growing horses, lactating mares, and performance horses, as it supports muscle development, immune function, and overall health. Adequate L-Lysine intake is crucial for optimizing the nutritional balance of equine diets and ensuring proper growth and maintenance.

The following equine feeds, supplements and products contain L-Lysine 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.
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.
Evolution Juvenile (Purina)
Caloric EnergyCaloric Energy
FoalFoal
GrowthGrowth
Ration BalancerRation Balancer
Evolution Juvenille is a multiparticle feed for growing horses made with pelleted and extruded components. It is designed to meet the nutritional needs of weanlings, yearlings and two-year olds.
Evolution Maternity (Purina)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Purina Evolution Maternity is a pelleted and extruded feed intended for late gestation and lactating broodmares and nursing and growing foals. Energy sources include corn, soy hulls, beet pulp, alfalfa meal, and flaxseeds.
Exacta 10 (Seminole)
FiberFiber
FlavorFlavor
Gut HealthGut Health
Organic Trace MineralsOrganic Trace Minerals
Seminole Exacta 10 is a textured feed intended for mature, active horses and ponies, providing 22% NSC. It contains soybeans, wheat middlings, oats, cracked corn, and molasses.
Exacta 12 (Seminole)
FiberFiber
FlavorFlavor
Gut HealthGut Health
Organic Trace MineralsOrganic Trace Minerals
Seminole Exacta 12 is a textured feed intended for active adult horses, providing 12% protein, 7% fat and 22% NSC. It contains soybeans, wheat middlings, oats, cracked corn, and molasses.
Exacta 14 (Seminole)
FiberFiber
FlavorFlavor
Gut HealthGut Health
Organic Trace MineralsOrganic Trace Minerals
Seminole Exacta 14 is a textured feed intended for growing, breeding, and performance horses. It provides 23% NSC and contains soybeans, wheat middlings, oats, cracked corn, and molasses.
Exceed 6-way (MVP)
Coat QualityCoat Quality
Gut HealthGut Health
Hoof HealthHoof Health
JointsJoints
Exceed 6-way from MVP is intended for joint, gastric, muscle, coat, hoof, and digestive health support. Some of the active ingredients include hyaluronic acid, MSM, biotin, zinc, copper, amino acids, probiotics, prebiotics, and a variety of herbs.
Exceed 6-Way Pellet (MVP)
JointsJoints
Mineral BalanceMineral Balance
MuscleMuscle
Omega 3-6-9Omega 3-6-9
Exceed 6-Way is a pelleted horse supplement containing MSM, glucosamine, hydrolyzed collagen, and yucca schidigera extract. It is formulated to support joints, hoof health, gut, and hair coat.
Excel Equine 10 (Excel Equine Feeds)
Easy KeeperEasy Keeper
HealthHealth
ImmunityImmunity
SeniorSenior
Excel Equine 10 is a textured feed from Excel Equine Feeds. This feed is intended for horses in low to moderate work, as well as mature horses.
Excel Equine 12 (Excel Equine Feeds)
FatFat
HealthHealth
ImmunityImmunity
PerformancePerformance
Excel Equine 12 is a textured feed from Excel Equine Feeds. Excel Equine 12 contains a fat content intended for horses in moderate workloads.
Excell E (Equistro)
AntioxidantAntioxidant
MetabolismMetabolism
NutrientsNutrients
VitaminsVitamins
Excell E is a liquid equine supplement providing bioavailable vitamin E, lysine, magnesium, and organic selenium. It is intended to support muscle tissue in performance or leisure horses.
EZ (Tribute)
CalmingCalming
ExerciseExercise
FatFat
FiberFiber
Tribute Equine EZ Pellets is a 20% fibre, 8% fat feed intended for hard keepers and mature horses with higher energy requirements. It is formulated with reduced sugar and starch content and provides a maximum 13.5% NSC.
Farrier’s Best Friend (Pegasus)
Bone HealthBone Health
HealthHealth
Hoof HealthHoof Health
Skin + HairSkin + Hair
Farrier's Best Friend from Pegasus is meant to support hoof, skin, and hair health. This supplement contains biotin, zinc, methionine, and calcium.
Farrier’s Choice (Advanced Biological Concepts)
DigestionDigestion
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Farrier's Choice from Advanced Biological Concepts is a pelleted vitamin and mineral supplement. This supplement can contribute to proper digestion and hoof health and growth.
Fat Cat (Vapco)
Amino AcidAmino Acid
EnergyEnergy
ToplineTopline
Weight IssuesWeight Issues
FAT-CAT is an equine supplement designed to support weight gain, shiny coats and hoof health. It contains corn oil, flaxseed oil, protein sources, biotin and several fermentation products.
Fat Maxx (Strictly Equine)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Ration BalancerRation Balancer
Fat Maxx by Strictly Equine is a top dressing supplement, intended to meet nutritional requirements for horses daily needs. It is intended to support weight and improve coat quality.
Fat Smart (Matrix)
Coat QualityCoat Quality
EnergyEnergy
FatFat
Weight IssuesWeight Issues
Fat Smart by Matrix is a pelleted feed designed to supplement energy from fat and fiber sources. It contains 12% fat, 14% protein and 22% fiber.
Feed Up (Dunstan)
EnergyEnergy
FoalFoal
GrainsGrains
GrowthGrowth
Feed Up by Dunstan is a complete feed comprised of mixed cereals lightly covered in molasses. It is intended to be a highly palatable feed that provides energy in a usable form to growing horses.
Fiber First (Excel Equine Feeds)
FatFat
FiberFiber
HealthHealth
NutritionNutrition
Fiber First from Excel Equine Feeds is a textured feed. This feed is intended to be high fat and high fat, with an increased beet pulp content.
Fibre Smart (Matrix)
Caloric EnergyCaloric Energy
FiberFiber
Gut HealthGut Health
HindgutHindgut
Fibre Smart by Matrix is a pelleted, complete feed with a higher fiber content of 22%. It provides 14% protein and 6% fat, and is designed to feed to horses in light - moderate work that require additional calories beyond forage.
Fibromega Cubed (Meunerie Benjamin)
Complete FeedComplete Feed
Coat QualityCoat Quality
FiberFiber
Gut HealthGut Health
Fibromega Cubed from Meunerie Benjamin is a complete feed that is high in fiber. It is intended to help with gastric health, coat and hoof health, and immunity.
Finisher 14 (McCauley’s Equine Formulas)
Coat QualityCoat Quality
FatFat
FoalFoal
Weight IssuesWeight Issues
Finisher 14™ is a textured feed designed for performance horses and preparing sale horses. It provides high levels of vegetable oil and beet pulp to promote a healthy coat appearance.
Fire-Fighter Non-GMO (Daily Dose Equine)
Easy KeeperEasy Keeper
HealthHealth
NutrientsNutrients
Weight IssuesWeight Issues
Fire-Fighter Non-GMO by Daily Dose Equine is a low NSC (10%) forage balancer intended for picky eaters needing to lose weight and horses with sensitive stomachs.
Flexi Time (Capstone Horse Feed)
BroodmareBroodmare
EnergyEnergy
NutritionNutrition
PerformancePerformance
Flexi Time by Capstone Horse Feed is an oat-free feed intended for breeding, racing and performance horses.
Foal Foundation (Tribute Equine)
FoalFoal
GrowthGrowth
PrebioticPrebiotic
ProbioticProbiotic
Tribute Foal Foundation™ is a milk-based pellet for foals up to three months of age to supplement the nutrients provided in mare's milk. The smaller pellet size helps to transition the foal to solid feeds.
Foal Starter (Buckeye)
EnergyEnergy
FoalFoal
PrebioticPrebiotic
ProteinProtein
Buckeye Foal Starter is a milk-based pellet that can be used as a free-choice transition or creep feed for foals under three months of age. It provides digestible fibre and protein sources.
Focus HF (Source Inc)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
Skin + HairSkin + Hair
Focus HF by Source Inc is a hoof supplement intended to support hoof growth, texture and strength in horses.
FootWise (Wiser Concepts)
Amino AcidAmino Acid
Coat QualityCoat Quality
Hoof HealthHoof Health
Mineral BalanceMineral Balance
FootWise from Wiser Concepts is a hoof and coat supplement that contains minerals and amino acids. It is meant to aid in skin and coat health and healthy hooves.
Formula Calm B (DAC)
CalmingCalming
Competition HorsesCompetition Horses
PerformancePerformance
VitaminsVitamins
Formula Calm B from dac is intended to promote balanced behaviour in horses. This supplement is intended to help horses relax. Formula Calm B contains B-Vitamins, Magnesium and Tryptophan.
Fort-EQ – Celebrite (La Coop)
AntioxidantAntioxidant
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Fort-EQ is a pelleted equine supplement produced by La Coop from Québec, Canada. It is advertised to provide major minerals, minor elements, vitamins, and amino acids for horses.
Fortify (Excel Equine Feeds)
FiberFiber
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
Fortify from Excel Equine Feeds is a textured feed intended for horses in all stages of life. This feed contains 13% protein and 8% fat. Fortify is intended for horses in any level of work.
Foundation Formula (DAC)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Foundation Formula from dac is a hoof supplement that is meant to encourage hoof growth, health, strength and frog health.
Frisky Foal (Masterfeeds)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
ProteinProtein
Masterfeeds 17% Frisky Foal is a pelleted transition feed used to wean nursing foals off of milk and onto solid feed. It provides elevated protein content to support growth.
Full Stride (Pureform)
Hoof HealthHoof Health
JointsJoints
SeniorSenior
Skin + HairSkin + Hair
Pureform Full Stride is a joint and bone supplement for horses containing MSM, Glucosamine, DMG, amino acids, vitamins and minerals. The formula is advertised to maintain cartilage, tendons, muscle, skin, hair and hooves.
Full Support Mini (Pureform)
DigestionDigestion
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Pureform Full Support Mini is a vitamin/mineral supplement intended for miniature horse breeds. It contains ingredients to support joint health, B-vitamins, as well as organic and inorganic minerals.
Furlong (Barastoc)
Amino AcidAmino Acid
Bone HealthBone Health
PerformancePerformance
RecoveryRecovery
Furlong by Barastoc is a oat ration that is meant for racing horses. It contains vitamins, minerals, and amino acids. It can assist with bone health, recovery, and gut health.
Futurity Blend 14 (Woody’s Feed)
BroodmareBroodmare
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
LactationLactation
Woody's Futurity Blend 14 is a high starch feed with 14% protein and 4.5% fat, targeted to broodmares and foals. It is formulated to support gestation, lactation and growth.
G.O. Big (Peak Performance Nutrients)
ExerciseExercise
GrowthGrowth
MuscleMuscle
RecoveryRecovery
G.O. Big by Peak Performance Nutrients is a muscle-building, strength, and recovery supplement. It contains a blend of amino acids to promote long-term, lean muscle mass on horses.
Gain (Mcintosh Pro Line)
Coat QualityCoat Quality
FatFat
HealthHealth
PerformancePerformance
Gain from Mcintosh Pro Line contains a blend of fats, proteins and carbohydrates intended to improve athletic performance. Gain is intended to improve coat quality and support gastrointestinal function.
GainIT (Durvet)
FatFat
Gut HealthGut Health
Skin + HairSkin + Hair
Weight IssuesWeight Issues
GainIT by Durvet is a high fat supplement intended to help with weight gain, performance and overall health of horses.
Galozyme Equine Sport (Technavet)
Competition HorsesCompetition Horses
DigestionDigestion
Gut HealthGut Health
VitaminsVitamins
Galozyme Equine Sport from Technavet is a supplement meant for horses in competition. It is intended to help with gut health and digestion through bacteria cultures.
General Purpose Supplement (NAF Equine)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
General Purpose Supplement from NAF Equine is intended to be added to a forage-based diet to supply extra vitamins and minerals. This supplement is intended for all horses and ponies.
Generation (Equis Feed)
GrainsGrains
Gut HealthGut Health
NutritionNutrition
VitaminsVitamins
Generation from Equis Feed is intended for breeding stallions, mares in their last trimester and during lactation, and growing foals. This feed contains vitamins and minerals blended with protein, and fiber.
Genesis (Brooks)
BroodmareBroodmare
HealthHealth
NutrientsNutrients
VitaminsVitamins
Genesis by Brooks is a broodmare feed available in either textured or pelleted form. It is designed to meet the enhanced nutritional needs of mares before and after foaling, and it is marketed as having a low glycemic index.
Gentle Balance (LMF Horse Feeds)
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
YeastYeast
Gentle Balance is a pelleted feed for horses that contains energy, vitamins, minerals, and yeast but does not contain grain or molasses. It is a low sugar feed that is meant for horses in light to moderate exercise.
GI (Platinum Performance)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
PrebioticPrebiotic
Platinum Performance GI is a gut health supplement for mature horses. It is formulated with flax seed, probiotics, prebiotics, glutamine and other amino acids, toxin binders, vitamins and minerals.
GI Health (Doctor’s Choice Supplements)
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
VitaminsVitamins
GI Health is a pre/probiotic supplement intended for horses subjected to stressful situations such as travelling and competition. It intends to promote gut function.
Glänzen 3 (HorseTech)
CalmingCalming
Coat QualityCoat Quality
Hoof HealthHoof Health
NutrientsNutrients
Glänzen 3 is a hoof and coat supplement that provides 30 mg of biotin per 6 ounce serving. It also supplies methionine, lysine, zinc and copper in a flax meal base for hoof support.
Glanzen Lite Complete (HorseTech)
Easy KeeperEasy Keeper
FlavorFlavor
Hoof HealthHoof Health
Skin + HairSkin + Hair
Glanzen Lite Complete by HorseTech is a powdered supplement intended to support hoof, skin and coat health in easy-keepers and picky eaters.
Glucosamine XL Plus w/MSM (MVP)
AntioxidantAntioxidant
JointsJoints
Mineral BalanceMineral Balance
RecoveryRecovery
Glucosamine XL Plus w/MSM by MVP is a pelleted supplement for horses that intends to support joint function. It contains ingredients such as glucosamine, MSM, and Ester-C®.
Glucosamine XL Plus w/MSM Pellets (Med-Vet Pharmaceuticals)
AntioxidantAntioxidant
JointsJoints
NutrientsNutrients
SeniorSenior
Glucosamine XL Plus w/MSM Pellets is a joint supplement for horses containing MSM, glucosamine sulphate, and vitamin C meant to support healthy joint function

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