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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.
Omolene Sport Plus (Purina)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Purina Omolene Sport Plus is a textured complete feed intended for horses in heavy work including racehorses. It provides 8% fat from vegetable oils and contains beet pulp as a high pectin fibre source.
Omolene® #100 Active Pleasure Horse Feed (Purina Mills)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
Omolene 100 Active Pleasure Horse Feed is a textured feed targeted to horses in maintenance to moderate work. It provides 10% crude protein, 10% fibre and 4.5% fat.
Omolene® #200 Performance Horse Feed (Purina Mills)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
PerformancePerformance
Omolene 200 Performance Horse Feed is a textured feed targeted to performance horses, broodmares in gestation and lactation, and breeding stallions. It contains added fat, carbohydrates, and molasses to support high caloric needs.
Omolene® #400 Complete Advantage (Purina Mills)
Complete FeedComplete Feed
ExerciseExercise
FiberFiber
SeniorSenior
Omolene 400 Complete Advantage is a textured horse feed for active and senior horses. It contains highly digestible fibre from beet pulp and fat from vegetable oils, flax seed and rice bran.
One’N Only (Wendlands)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
One'N Only by Wendlands is a total mixed ration formulated to replace traditional concentrates and supplements. It can also be fed as a hay extender to help meet forage needs.
Optima (Banks Mill Feeds)
Grain FreeGrain Free
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
Omega 3-6-9Omega 3-6-9
Optima-LA from Banks Mill is a low starch pelleted feed intended for horses at all life stages. It provides energy from soybeans, wheat middlings, alfalfa meal, beet pulp, dried molasses, flax, and vegetable oil.
Optimize (Uckele)
FiberFiber
Low NSC FeedsLow NSC Feeds
MetabolismMetabolism
NutrientsNutrients
Optimize is a pelleted ration balancer with a feeding rate of 1-2 lbs per day. It is formulated for horses needing a low starch and sugar diet, such as horses with metabolic disorders. The NSC content in this ration balancer is 7.8%
Orange Superior (DAC)
MetabolismMetabolism
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
Orange Superior is a vitamin and mineral supplement that can be given to any mature horse, and is meant to support metabolic functions, energy balance, and also provides probiotics.
Original 12 Textured (McCauley’s Equine Formulas)
BroodmareBroodmare
Complete FeedComplete Feed
LactationLactation
StallionStallion
Original 12 Textured is a palatable oat-based feed targeted to broodmares and stallions. It is formulated with added yeast and organic minerals. It is designed to promote healthy gut function.
Original 14 Pelleted (McCauley’s)
Feed EfficiencyFeed Efficiency
GrainsGrains
GrowthGrowth
NutritionNutrition
McCauley's Original® 14 Pelleted is a pelleted horse feed with 14% protein to meet the needs of breeding and growing horses. This oat-based formula contains 3.5% fat and 12% fibre.
Original 14 Textured (McCauley’s Equine Formulas)
Feed EfficiencyFeed Efficiency
GrowthGrowth
HealthHealth
LactationLactation
McCauley's Original 14 Textured is an oat-based feed for stallions, breeding, growing, and performance horses. It is fortified with organic minerals and contains yeast for digestive health.
Original 16 Textured (McCauley’s Equine Formulas)
BroodmareBroodmare
Feed EfficiencyFeed Efficiency
FoalFoal
LactationLactation
McCauley's Original 16 Textured is an oat-based horse feed for breeding and growing horses. It contains higher protein (16%) to meet the needs of growing yearlings and lactating broodmares.
Original Feed Balancer (Blue Chip Feed)
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
YeastYeast
Original Feed Balancer from Blue Chip Feed is a pelleted ration balancer intended for all horses and ponies at any work level. This balancer is designed to support digestive, hoof, skin, coat, and respiratory health.
Original Performance Formula (Wilson Feeds)
HealthHealth
NutritionNutrition
PerformancePerformance
Ration BalancerRation Balancer
Original Performance Formula by Wilson Feeds is a soy-free supplement intended to fill nutritional gaps of horses on a forage-based diet.
Original® 12 Pelleted (McCauley’s Equine Formulas)
BroodmareBroodmare
Feed EfficiencyFeed Efficiency
Ration BalancerRation Balancer
StallionStallion
McCauley's Original® 12 Pelleted is a palatable and digestible oat-based feed for broodmares and stallions. It provides 12% protein, 12% fiber, 3.5% fat, and contains organic minerals.
Original® 16 Pelleted (McCauley’s Equine Formulas)
Feed EfficiencyFeed Efficiency
FoalFoal
GrowthGrowth
LactationLactation
Original® 16 Pelleted is an oat-based feed targeted to breeding horses and yearlings. It provides 16% crude protein and is formulated for growing horses.
Osteo-Max (100x Equine)
Competition HorsesCompetition Horses
HealthHealth
ImmunityImmunity
JointsJoints
Osteo-Max from 100x Equine is a liquid joint supplement for horses. Osteo-Max is intended to support bone remodeling and increase bone density.
Outshine (Baileys Horse Feeds)
Coat QualityCoat Quality
FatFat
NutritionNutrition
Omega 3-6-9Omega 3-6-9
Outshine by Baileys Horse Feeds improves coat quality and supports horses who need slow-release calories for weight gain. This supplement contains Omega-3 and Omega-6 fatty acids.
Parkmore Special Vitamin/Mineral Pelleted Supplement (Parkmore Supplements)
HealthHealth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Parkmore Special Vitamin/Mineral Pelleted Supplement is a trace mineral and vitamin supplement designed for all ages and working classes of horses. It can be fed in addition to grain or on its own.
Pasture Plus (Dunstan)
BroodmareBroodmare
MareMare
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
Pasture Plus by Dunstan is an extruded mineralized nugget intended to supply the mineral requirements of pregnant mares that live on pasture. It is formulated for New Zealand Horses living under the environmental conditions found in New Zealand.
Patriot 36 Ration Balancer (ADM Animal Nutrition)
Mineral BalanceMineral Balance
NutrientsNutrients
ProteinProtein
VitaminsVitamins
Patriot 36 Ration Balancer by ADM Animal Nutrition is a pelleted supplement that provides protein, vitamins, and minerals for all types of horses. It should be fed along with hay or pasture (forage) and any grain or concentrate feeds.
Patriot Feed Easy Complete (ADM Animal Nutrition)
Feed EfficiencyFeed Efficiency
FiberFiber
Gut HealthGut Health
PerformancePerformance
Patriot Feed Easy is a pelleted complete forage/feed mix designed to meet the nutritional needs of mature horses when forage supplies are low. It provides less than 20% NSC.
Patriot Mare & Foal Horse Feed (ADM Animal Nutrition)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Patriot Mare & Foal is a pelleted complete feed designed to meet the needs of gestating and lactating mares as well as foals from 0 to 18 months of age. Patriot Mare & Foal is palatable to encourage consumption.
Patriot Pellet (Masterfeeds)
Easy KeeperEasy Keeper
MuscleMuscle
ProteinProtein
Ration BalancerRation Balancer
Masterfeeds Patriot Pellet is a complete pelleted feed intended for horses at maintenance or in moderate work. The pellets are fortified with minerals and vitamins and provide high protein (14%) and low fat (4.5%).
Patriot Performance Horse Feed (ADM Animal Nutrition)
Complete FeedComplete Feed
EnergyEnergy
ExerciseExercise
PerformancePerformance
Patriot Performance is a pelleted complete feed that is formulated for mature performance horses and broodmares. It provides vegetable fat and digestible fibre sources and contains ~20% NSC.
Patriot Quick Performance (ADM Animal Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
ExerciseExercise
PerformancePerformance
Patriot Quick Performance is a pelleted feed formulated for use when forage supply is limited. It contains 20 - 30% NSC and is intended for mature athletic horses that require additional energy.
Patriot Senior Complete Horse Feed (ADM Animal Nutrition)
Complete FeedComplete Feed
FiberFiber
SeniorSenior
ToplineTopline
Patriot Senior is a pelleted complete forage-feed product for senior horses. It is designed to be easy to chew and to meet nutritional needs when forage availability is low.
Pelleted Hoof Supplement (American Farrier’s Association)
FlavorFlavor
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
This pelleted hoof supplement is meant to be palatable and functional for any horse or pony. It contains a variety of minerals and vitamins which aims to support strong, healthy hooves.
Perfo EXT (Sollio Agriculture)
Competition HorsesCompetition Horses
HealthHealth
NutritionNutrition
Weight IssuesWeight Issues
Perfo EXT is a high-calorie extruded feed. This feed is intended for performance horses or horses who require additional calories.
Perform Gold (Triple Crown)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
FatFat
FiberFiber
Perform Gold is a high energy density pelleted feed designed for performance horses. It provides 12.5% protein, 12% fat and 15.3% NSC, and contains a mixture of organic and inorganic minerals.
Perform Safe (Seminole)
Complete FeedComplete Feed
EnergyEnergy
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Perform Safe™ is a low-starch, high-fat pelleted feed targeted to growing, breeding and mature performance horses. It contains 12% protein and 8% fat with energy sources such as soybean hulls, beet pulp and rice bran.
Performa Care Balancer (Red Mills)
Competition HorsesCompetition Horses
ImmunityImmunity
MuscleMuscle
NutritionNutrition
Performa Care Balancer from Red Mills is intended for performance horses or used as a topper for a low-concentrate feed. This feed contains 43% starch, 30% protein, and 9% fiber.
Performance (Equis Feed)
GrainsGrains
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Equis Feeds Performance is a high-protein complete feed intended for working horses. It is formulated with oil and grains with highly digestible vitamins, minerals, and digestive aids to provide higher energy density.
Performance 12 (Excel Equine Feeds)
ExerciseExercise
HealthHealth
NutritionNutrition
PerformancePerformance
Performance 12 is a textured feed from Excel Equine Feeds. This feed contains fat sources and digestible fibre intended to support the needs of performance horses.
Performance Advantage (Tribute Equine)
EnergyEnergy
FatFat
FoalFoal
PerformancePerformance
Tribute Performance Advantage® is a grain-based, textured feed formulated to meet the higher energy requirements of performance horses. It provides 8% fat and 31% NSC.
Performance Balancer (Dodson & Horrell)
Hoof HealthHoof Health
JointsJoints
PerformancePerformance
Ration BalancerRation Balancer
Performance Balancer is a performance feed meant to be fed as a low intake feed or alongside another feed. This feed provides the vitamins and minerals to support joint care, a higher level of biotin for hoof support, and yeast for a healthy hindgut.
Performance Horse Mineral (Hoffman’s Horse Products)
Mineral BalanceMineral Balance
PerformancePerformance
RecoveryRecovery
VitaminsVitamins
Hoffman's Performance Horse Mineral is a pelleted mineral and vitamin supplement that provides a mix of organic and inorganic trace minerals. This supplement can be provided free-choice or as a top dressing with feed.
Performance Liquid (Formula 707)
Mineral BalanceMineral Balance
NutrientsNutrients
PerformancePerformance
VitaminsVitamins
Performance Liquid from Formula 707 is a liquid supplement containing vitamins and minerals. It is intended to provide energy and nutrients for performance horses.
Performance Lite Feed Balancer (TopSpec)
Competition HorsesCompetition Horses
Easy KeeperEasy Keeper
PerformancePerformance
Ration BalancerRation Balancer
Performance Lite Feed Balancer from TopSpec is ideal for easy keepers competing or in heavy work. This ration balancer supports bone strength, hoof health, and skin and coat quality.
Performance One (Pureform)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
ExerciseExercise
PerformancePerformance
Performance One is a concentrated supplement for performance horses providing glucosamine, MSM, creatine, amino acids, vitamins, trace minerals and electrolytes.
Performance Pelleted (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
FatFat
PerformancePerformance
ProteinProtein
Woody’s Performance Pelleted is a complete pelleted feed with higher energy density for working horses. It is formulated with beet pulp, alfalfa meal and oats, and contains 14% protein and 8% fat.
Performance Pellets Formula (Bartlett Milling) [Discontinued]
ExerciseExercise
GrowthGrowth
LactationLactation
PerformancePerformance
Bartlett Performance Pellets Formula is a pelleted feed intended for horses requiring additional protein and energy. It can be fed to horses in light to medium work, growing foals and lactating mares.
Performance Pellets Gold Formula (Bartlett Milling) [Discontinued]
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Bartlett Performance Pellets Gold Formula is a high energy density feed intended for mature horses in moderate to rigorous training. Calorie sources include wheat middlings, corn, and soy oil.
Performance Plus Complete (Bluebonnet Feeds)
FiberFiber
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Performance Plus Complete from Bluebonnet Feeds is an alfalfa-based pellet intended to replace some or all of the forage in a horse's diet. It contains 12% crude protein, 3.5% crude fat, and 29% crude fibre.
Performance Textured (ProElite)
Complete FeedComplete Feed
Competition HorsesCompetition Horses
PerformancePerformance
StaminaStamina
ProElite Performance Horse Feed is a textured feed intended for mature show and performance horses. It provides 12% fat and 18.3% NSC with energy sources including beet pulp, whole oats, wheat middlings, soybean hulls, and cane molasses.
Performance Textured (Woody’s Horse Nutrition)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
FatFat
ProteinProtein
Woody’s Performance Textured is a complete textured feed for exercising and performance horses. It provides 14% protein and 10% fat and is composed of oats, beet pulp, molasses and vegetable oil.
Performance Vitamins and Minerals (Dodson & Horrell)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
VitaminsVitamins
Performance Vitamins and Minerals from Dodson & Horrell is a pelleted supplement that provides increased micronutrients for performance and breeding horses and ponies. This supplement also contains electrolytes to promote recovery and rehydration.
Physique (Equi-lete)
Bone HealthBone Health
EnergyEnergy
HealthHealth
Mineral BalanceMineral Balance
UlcersUlcers
Physique by Equi-lete is a pelleted supplement intended to support bone and tissue health in all horse types.
Platinum Hoof Support (Platinum Performance)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Platinum Hoof Support is an equine hoof supplement providing biotin, the trace minerals zinc, manganese, copper, and cobalt, and the amino acids L-lysine and L-methionine.
Platinum Performance® Equine Wellness and Performance Formula
EnergyEnergy
FatFat
JointsJoints
Omega 3-6-9Omega 3-6-9
Platinum Performance® Equine Wellness and Performance Formula is a nutritional supplement containing ground flaxseed, stabilized rice bran, montmorillonite (bentonite) clay and a range of vitamins and minerals.

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