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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.
Pleasure Sweet (Buckeye)
Complete FeedComplete Feed
DigestionDigestion
NutritionNutrition
SeniorSenior
Pleasure Sweet is a multi-particle sweet feed with added molasses to improve palatability. This feed supports digestibility and is intended for mature maintenance or lightly worked horses.
Post Time (McCauley’s Equine Formulas)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Post Time® is a highly palatable textured horse feed providing high digestible energy levels for performance horses. It provides 8% crude fat from vegetable oil, 12% protein, and 11% crude fiber.
Power + (Pivotal)
Amino AcidAmino Acid
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
Power + By Pivotal is a powdered amino acid and probiotic supplement intended to support overall health in performance horses.
Power Finish (Tribute)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
PerformancePerformance
Tribute Power Finish is a high-fat textured feed intended for adult horses in heavy training. It provides highly digestible energy sources to support the calorie requirements of racehorses. Power Finish contains high levels of protein (13% crude protein), fat (10% crude fat), and NSC (32%).
PowerGLO (ADM Animal Nutrition)
Caloric EnergyCaloric Energy
ExerciseExercise
PerformancePerformance
Weight IssuesWeight Issues
PowerGLO is a concentrated feed formulated for elite performance horses. It is high in fat and carbohydrates to support the caloric needs of equine athletes.
Pre-Fuel Liquid (Foran Equine)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
NutrientsNutrients
Pre-Fuel Liquid from Foran Equine is intended for horses and ponies in heavy work or competition. This supplement is meant to support nutritional and energy requirements.
Premium 250 (Pryde’s EasiFeed)
PerformancePerformance
ProteinProtein
Ration BalancerRation Balancer
RecoveryRecovery
Premium 250 by Pryde's EasiFeed is a ration balancer containing 25% protein. It is intended for performance horses, and horses recovering from illness or injury.
Premium Horse Pellet AL (Cargill)
DigestionDigestion
ExerciseExercise
NutrientsNutrients
NutritionNutrition
Premium Horse Pellets (AL) by Cargill are intended as a ration balancer for adult horses.
PreOx (HorseTech)
AntioxidantAntioxidant
HealthHealth
ImmunityImmunity
VitaminsVitamins
PreOx from HorseTech is a powdered antioxidant supplement. PreOx contains added vitamins, minerals and added flaxseed. This supplement is intended for horses who require additional antioxidants in their diet.
Prep Mix (Baileys Horse Feeds)
FatFat
GrowthGrowth
NutritionNutrition
ToplineTopline
Baileys Horse Feeds Prep Mix is formulated to provide optimum growth support and condition. This feed is intended for yearlings to 3-year-olds in early training. Prep Mix is oat-free and contains 6.5% of oil, which helps to improve coat quality.
Prepare (Barastoc)
AntioxidantAntioxidant
BroodmareBroodmare
Mineral BalanceMineral Balance
StallionStallion
Prepare by Barastoc is a concentrate that is meant for young horses and broodmares or stallions to assist with preparing for breeding. It contains amino acids, minerals, vitamins, and antioxidants.
Prime (Running Horse)
Competition HorsesCompetition Horses
ExerciseExercise
FatFat
PerformancePerformance
Running Horse Prime is a high-energy extruded feed targeted to performance equine athletes. Calorie sources include wheat middlings, pearled barley, soybean hulls, corn DDGS, stabilized rice bran, vegetable oil, flaxseed, and beet pulp.
PrimeGLO (ADM Animal Nutrition)
FatFat
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Weight IssuesWeight Issues
PrimeGLO is a concentrated horse feed designed for mature horses. It is a soft, easy-to-chew formulation that contains ingredients to support gut health. The total NSC is 14.5%.
Pro Feed Balancer (Blue Chip Feed)
BroodmareBroodmare
GrowthGrowth
Ration BalancerRation Balancer
StallionStallion
Pro Feed Balancer from Blue Chip Feed is a pelleted ration balancer designed to support hoof, coat, and gut health. This product is intended for performance horses, broodmares, stallions, and young stock.
Pro Mare With Clarifly (MAC)
BroodmareBroodmare
HealthHealth
LactationLactation
NutrientsNutrients
Pro Mare with Clarifly by MAC is a protein, vitamin and mineral supplement. It is intended to control the development of flies in the manure of dry and lactating mares.
Pro Star Complete 3/8 (West Feeds)
Caloric EnergyCaloric Energy
FiberFiber
Gut HealthGut Health
NutritionNutrition
Pro Star Complete 3/8 by West Feeds is a high fibre feed with ingredients such as plant protein and processed grains. It contains a minimum of 12% protein and a maximum of 25% fibre.
Pro V.M. (Peak Performance Nutrients)
JointsJoints
MuscleMuscle
PerformancePerformance
StaminaStamina
Pro V.M. by Peak Performance Nutrients is a multi-use vitamin, mineral and amino acid supplement designed with race horses in mind. It intends to support the extreme demands on the horse’s joints, immune system and muscular system.
Pro V.M. with EFAs (Peak Performance Nutrients)
AntioxidantAntioxidant
ElectrolyteElectrolyte
JointsJoints
MuscleMuscle
Pro V.M. with EFAs by Peak Performance Nutrients is a vitamin, mineral, amino acid & probiotic supplement designed with race horses in mind. It intends to support the extreme demands on the horse’s joints, immune system and digestive system.
Pro-Formance 14% (West Feeds)
Complete FeedComplete Feed
ExerciseExercise
FatFat
ProteinProtein
Pro-Formance 14% by West Feeds is a feed for performance horses, with an elevated protein level of 14% and a good level of fat of 6%. This feed is meant for high energy performance and includes ingredients such as inorganic vitamins and minerals and soybean oil to support the activity level.
Pro-Plus (West Feeds)
Caloric EnergyCaloric Energy
ExerciseExercise
GrainsGrains
ProteinProtein
Pro-Plus by West Feeds is a feed meant for active horses, high in energy, with a protein level of 12% and a fat content of 6%. The ingredients in this feed include added soybean oil, inorganic vitamins and minerals, and yeast products to maintain a healthy and active lifestyle.
Pro-Plus 12 Sweet (Seminole) – [Discontinued]
Amino AcidAmino Acid
Complete FeedComplete Feed
ExerciseExercise
GrowthGrowth
Seminole Pro-Plus 12 Sweet is a now-discontinued oat-based textured feed for growing, breeding, pleasure and performance horses.
PRO-TECT LS (Dove Performance Nutrition)
HealthHealth
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
NutritionNutrition
PRO-TECT LS by Dove Performance Nutrition is a pelleted feed intended for all horse types.
Pro-Vide 10% (West Feeds)
FatFat
FiberFiber
GrainsGrains
NutritionNutrition
Pro-Vide 10% by West Feeds is a feed designed to support the active horse in conjunction with an additional protein source. This feed provides 10% of protein, 5% fat content, and 12% fibre content with added soybean oil and inorganic vitamins and minerals.
Pro24 Supplement (Hoffman’s Horse Products)
Easy KeeperEasy Keeper
Feed EfficiencyFeed Efficiency
HealthHealth
NutritionNutrition
Pro24 Supplement from Hoffman's is a concentrated protein, vitamin, and mineral supplement to support horses over 1 year of age. Pro24 Supplement is intended to be fed with good quality forages and contains no added sugars or starches.
ProAdvantage – Alfalfa Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Alfalfa Formula is a ration balancer concentrate intended for horses consuming alfalfa hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
ProAdvantage – Grass Formula (Progressive Nutrition)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
ProAdvantage® – Grass Formula is a concentrated ration balancer intended for horses consuming grass or mixed hay. This feed contains amino acids, vitamins, and minerals in a lower-starch format.
ProAmino (Equine Challenge)
Amino AcidAmino Acid
BroodmareBroodmare
MuscleMuscle
RecoveryRecovery
ProAmino from Equine Challenge is a supplement containing amino acids and omegas 3 and 6. It is intended for growing, pregnant, or lactating horses and can assist with muscle health and recovery.
Profecta 10 (Seminole)
Caloric EnergyCaloric Energy
Feed EfficiencyFeed Efficiency
GrainsGrains
YeastYeast
Seminole Profecta 10™ is a pelleted feed providing grains, digestible fibers, yeast and molasses with 21% NSC. It is targeted at active mature horses and ponies.
Profecta 12 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 12 is a pelleted feed intended for mature, active horses and ponies. It has a moderate energy density, yeast culture, and 19% NSC (sugar and starch).
Profecta 14 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 14 is a pelleted feed intended for growing, breeding and performance horses. It contains 14% protein, 7% fat and 24% NSC. This feed is fortified with chelated trace minerals and antioxidants.
Professional Farrier’s Choice Hoof Supplement (Vita Stress)
Amino AcidAmino Acid
Hoof HealthHoof Health
ProteinProtein
RecoveryRecovery
Vita Stress Professional Farrier’s Choice Supplement is a hoof supplement containing 14 amino acids. It also supplies biotin and other vitamins important for hoof growth.
ProForce Fuel (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce Fuel is a 13% fat horse feed intended for performance athletes and hard keepers. It is meant to provide a higher calorie density with a maximum of 20% NSC.
ProForce Fuel XF (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce® Fuel XF is a 13% fat horse feed formulated for high performance horses that need additional nutritional support to meet the demands of stress and rigorous training.
ProForce Senior (Nutrena)
EnergyEnergy
ExerciseExercise
FiberFiber
SeniorSenior
Nutrena ProForce Senior is an 11% fat horse feed intended for senior equine athletes. It contains energy from digestible fiber sources and extruded fat nuggets with a maximum of 18% NSC.
Proformance 14 (Excel Equine Feeds)
BroodmareBroodmare
HealthHealth
NutrientsNutrients
PerformancePerformance
Proformance 14 by Excel Equine Feeds is a fortified textured feed intended for broodmares, foals, weanlings, yearlings and performance horses.
Proformance Sales Prep (Excel Equine Feeds)
GrowthGrowth
HealthHealth
NutrientsNutrients
NutritionNutrition
Proformance Sales Prep by Excel Equine Feeds is a textured feed intended to keep growing horses in proper condition for sale day.
Prolong Time (Capstone Horse Feed)
BroodmareBroodmare
Competition HorsesCompetition Horses
DigestionDigestion
StallionStallion
Prolong Time by Capstone Horse Feed is a low glycemic pelleted feed intended for breeding, growing and sport horses.
PROMINENT Textured Horse Feed (BUCKEYE Nutrition)
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
ProteinProtein
Prominent Textured Horse Feed by Buckeye Nutrition is a complete feed formulated for performance horses. It is palatable and provides 14% protein, 32% NSC and energy from oats, wheat, corn, and soybean oil.
Promita (Mitavite)
Bone HealthBone Health
BroodmareBroodmare
GrowthGrowth
PerformancePerformance
Promita by Mitavite is a high protein extruded feed intended for breeding and performance horses.
Prove PRO:formance (Farrier’s Magic)
Caloric EnergyCaloric Energy
FiberFiber
GrainsGrains
NutritionNutrition
Prove PRO:formance is a complete grain ration intended to help provide horses, of all ages and levels of work, with all the needed nutrients that they might not have if only fed pasture or hay.
Pur-Athlete (Purina)
Complete FeedComplete Feed
ExerciseExercise
FatFat
PerformancePerformance
Pur-Athlete™ is an extruded fat supplement containing vegetable oil and flaxseed. It is formulated to provide added energy and nutrients for performance horses. This supplement also supports coat, skin, and hoof conditions.
Pure & Simple Balancer (Hallway)
NutritionNutrition
ProteinProtein
Ration BalancerRation Balancer
ToplineTopline
Pure & Simple Balancer from Hallway is marketed as a non-GMO ration balancer. Pure & Simple contains 14% protein and provides 1048 kcal per lb of digestible energy.
Pure Balance (Pure Feed Company)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Pure Balance by Pure Feed Company is a pelleted horse feed that supports health and vitality. It is free from molasses and wholegrain cereals and contains linseed to encourage healthy coat condition and shine.
Pure Condition Mix (Pure Feed Company)
FatFat
MuscleMuscle
Omega 3-6-9Omega 3-6-9
PerformancePerformance
Pure Condition Mix by Pure Feed Company is a textured horse feed that promotes positive behaviour and helps to improve muscle development. It supports digestive health and supplies calm energy to the horse.
Pure Condition Pellets (Pure Feed Company)
DentalDental
FatFat
Omega 3-6-9Omega 3-6-9
ToplineTopline
Pure Condition Pellets by Pure Feed Company is a pelleted horse feed that intends to assist with muscle development. Pure Condition Pellets contain a high oil content to promote weight gain.
Pure Easy (Pure Feed Company)
EnergyEnergy
ExerciseExercise
Mineral BalanceMineral Balance
VitaminsVitamins
Pure Balance by Pure Feed Company is a pelleted horse feed that supports health and vitality. It is free from molasses and wholegrain cereals and contains linseed to encourage healthy coat condition and shine.
Pure Fibre Balance (Pure Feed Company)
Easy KeeperEasy Keeper
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Pure Fibre Balance by Pure Feed Company is a textured horse feed for easy keepers that includes vitamins and minerals. It is a high fibre content to support gut health and is low in calories to prevent unwanted weight gain.
Pure L-Lysine Powder (AniMed)
Amino AcidAmino Acid
GrowthGrowth
IngredientIngredient
Skin + HairSkin + Hair
Pure L-Lysine Powder from AniMed is a single ingredient supplement that contains the amino acid lysine. Lysine helps with growth and development. It also contributes to the health of hooves and coat condition.
Pure Lysine (Vita Flex)
Amino AcidAmino Acid
HealthHealth
NutrientsNutrients
ToplineTopline
Vita Flex Pure Lysine is an essential amino acid supplement for horses containing L-Lysine HCI. This is often the most limiting amino acid in the horse's diet.
Pure Performance (Pure Feed Company)
EnergyEnergy
MuscleMuscle
NutrientsNutrients
PerformancePerformance
Pure Performance by Pure Feed Company is a textured feed that contains oats to provide an instant energy source. It also has oil that gives your horse sustained and controlled power and fibre to be kind to the digestive system.

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