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Selenium Yeast - Feed Ingredient

Selenium yeast is an organic form of selenium produced by fermenting yeast (Saccharomyces cerevisiae) in a selenium-enriched medium. During fermentation, the yeast incorporates selenium into amino acids which is the most bioavailable form of selenium for animals. Selenium yeast is commonly used in livestock and equine nutrition to support antioxidant function, immune health, and proper muscle function.

Compared to inorganic sources like sodium selenite, selenium yeast is more efficiently absorbed and retained in tissues, leading to improved selenium status in the body. Selenium yeast is also considered safer than selenium salts, as it has a lower risk of toxicity.

Selenium is an essential trace mineral required for the activity of glutathione peroxidase, an enzyme that protects cells from oxidative damage. Horses and other animals depend on dietary selenium because they cannot synthesize it internally.

In horses, selenium deficiency can lead to muscle weakness, poor immune response, and white muscle disease in foals. However, excessive selenium intake can be toxic, causing symptoms such as hoof cracking, hair loss, and neurological issues.

The following equine feeds, supplements and products contain Selenium Yeast 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.
Natural E/Organic Se (Mad Barn)
AntioxidantAntioxidant
Organic Trace MineralsOrganic Trace Minerals
RecoveryRecovery
VitaminsVitamins
Natural E/Organic Se is a pelleted supplement providing organic Selenium yeast and natural Vitamin E. These two nutrients are important antioxidants that support muscle function and anti-inflammatory pathways.
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.
Trace Mineral Pak (Mad Barn)
Coat QualityCoat Quality
ExerciseExercise
Hoof HealthHoof Health
Organic Trace MineralsOrganic Trace Minerals
Trace Mineral Pak from Mad Barn is a balanced equine supplement providing 100% organic (chelated) trace minerals. Ingredients include selenium, zinc, copper, and manganese.
Growth Textured (Woody’s Horse Nutrition)
BroodmareBroodmare
FoalFoal
GrowthGrowth
NutritionNutrition
Woody’s Growth Textured is a complete textured feed formulated for broodmares, stallions, and growing horses. Omega-3 fatty acids is meant to help strengthen immune systems in both mare and foal.
GROWTH Textured Sweet Feed (BUCKEYE Nutrition)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Growth Textured Sweet Feed by Buckeye is a complete feed designed for broodmares and growing horses. It provides fat, carbohydrates, and proteins from whole oats, soybean hulls, soybean oil and molasses. It contains 24% NSC.
Handimash (Hallway)
Competition HorsesCompetition Horses
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
HandiMash from Hallway feeds is an electrolyte mash to increase fluid intake and replenish electrolytes lost after exercise or other stressful events. HandiMash is not intended to replace a daily feed regiment.
Head Start Plus Colostrum (Doctor’s Choice Supplements)
FoalFoal
GrowthGrowth
Mineral BalanceMineral Balance
VitaminsVitamins
Head Start Plus Colostrum is a foal supplement intended to provide vitamins, minerals, probiotics, prebiotics, and colostrum to help support immune function, gut health, and overall wellness.
Healthy Minerals For Horses (New Country Organics)
HealthHealth
ImmunityImmunity
Mineral BalanceMineral Balance
PerformancePerformance
Healthy Minerals For Horses by New Country Organics is a premixed free-choice loose mineral for horses. It is intended to help boost overall animal performance and meat and milk production.
High Fat Horse Nugget (Alfa Force Equine)
Complete FeedComplete Feed
FiberFiber
NutrientsNutrients
NutritionNutrition
High Fat Nuggets by Alfa Force Equine is a pelleted feed that can replace all forage. It is intended for pleasure, performance, or breeding horses.
High Fat Horse Pellet (Alfa Force Equine)
FatFat
HealthHealth
NutrientsNutrients
NutritionNutrition
High Fat Horse Pellet by Alfa Force Equine is a pelleted feed intended for all classes of horses.
High Point Pellets (HorseTech)
Gut HealthGut Health
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
High Point Pellets by HorseTech is a pelleted vitamin and mineral supplement formulated to balance forage-based diets and support overall health. It also contains added prebiotics to promote optimal digestive function.
High Point-Alfalfa Hay (HorseTech)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
High Point- Alfalfa from HorseTech is a vitamin and mineral supplement which is designed to be fed in alfalfa-based diets. The 3-ounce feeding rate provides phosphorus and essential vitamins as well as trace minerals.
High Point-Grass/Mixed Hay (HorseTech)
HealthHealth
ProbioticProbiotic
Ration BalancerRation Balancer
VitaminsVitamins
High Point-Grass/Mixed Hay is a vitamin-mineral supplement formulated for horses consuming grass or mixed hay diets. This supplement provides a higher calcium-phosphorous ratio.
High Step (Equi-lete)
Easy KeeperEasy Keeper
Hoof HealthHoof Health
ImmunityImmunity
Skin + HairSkin + Hair
High Step by Equi-lete is a vitamin and mineral supplement intended to support overall health in pleasure horses, easy keepers and non-performance horses.
High VAULTage (Equi-lete)
HealthHealth
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
High VAULTage by Equi-lete is a vitamin and mineral supplement intended to support health, performance and recovery in performance horses and hard keepers.
Hiland’s Big Sky Mineral (Hiland Supply Co. Ltd)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Hiland's Big Sky Mineral by Hiland Supply Co. Ltd is a mineral supplement intended to support overall health in all horse types.
Hoof + Hair (Bluebonnet Feeds)
Coat QualityCoat Quality
Hoof HealthHoof Health
NutrientsNutrients
Skin + HairSkin + Hair
Hoof + Hair by Bluebonnet Feeds is a vitamin and mineral supplement intended to support healthy hooves and coat in all horse types.
Hoof Pro Plus (Excel Equine)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
RecoveryRecovery
Hoof Pro Plus by Excel Equine is a pelleted hoof supplement formulated to support normal hoof growth and overall hoof quality. It contains biotin, methionine, calcium, and zinc.
Horse Cubes (Alfa Force Equine)
HealthHealth
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
NutritionNutrition
Horse Cubes by Alfa Force Equine is a pelleted feed intended for all classes of horses.
Horse Guard
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Horse Guard is a pelleted, concentrated vitamin-mineral supplement designed for all classes of horses. The recommended feeding rate is 2 oz per day.
Horse Maintenance Formula (Bartlett Milling) [Discontinued]
Easy KeeperEasy Keeper
HealthHealth
NutritionNutrition
Ration BalancerRation Balancer
Bartlett Horse Maintenance Formula is a 13.5% protein and 3.5% fat pelleted feed. It is designed to supply a lower energy density for horses at maintenance.
Horse Mineral (Hoffman’s Horse Products)
DigestionDigestion
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Hoffman's Horse Mineral is an equine mineral and vitamin supplement primarily intended for free-choice feeding large herds. It does not contain sugars, grains, or added starches.
Horse Nugget (Alfa Force Equine)
HealthHealth
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
NutritionNutrition
Horse Nugget by Alfa Force Equine is a pelleted feed intended for all classes of horses.
Horse Pellet 110 Plus (Bartlett Milling) [Discontinued]
Complete FeedComplete Feed
HealthHealth
NutritionNutrition
ProteinProtein
Horse Pellet 110 Plus is an 11% protein and 5% fat complete feed with added lysine and methionine. Energy sources include wheat middlings, ground corn, soybean hulls, and alfalfa meal.
Horse Power (Lakeland Feeds)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Horse Power from Lakeland Feeds is a pelleted equine feed formulated with flax and rice bran. Horse Power is intended to aid in joint, hoof and coat health in horses of various life stages and work levels.
HS-35 Horse Supplement (Optimin)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
HS-35 Horse Supplement is a loose vitamin-mineral supplement in a soybean and flaxseed base. It is formulated with both organic and inorganic minerals, yeast, and lactic acid bacteria as a probiotic.
Hubbard Horse Mineral (Hubbard Feeds)
Bone HealthBone Health
GrowthGrowth
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Hubbard Horse Mineral is a vitamin and mineral premix with a 1.2:1 calcium to phosphorus ratio designed to balance alfalfa-mixed forages. It provides organic trace minerals as well as vitamins needed to balance a forage-only diet or mixed grain ration.
Hydraid (Natural Horse Vet)
ElectrolyteElectrolyte
HydrationHydration
RecoveryRecovery
StaminaStamina
Hydraid by Natural Horse Vet is a powdered supplement intended for performance horses to supply the electrolytes lost during competition. It contains dicalcium phosphate, calcium carbonate, and crushed mineral rock salt.
Inspire Actify (Blue Seal)
AntioxidantAntioxidant
EnergyEnergy
NutrientsNutrients
PerformancePerformance
Inspire Actify from Blue Seal is a textured horse feed containing beet pulp, prebiotics, and antioxidants. It is a high calorie feed intended for performance horses such as racing.
Inspire Charger (Blue Seal)
BroodmareBroodmare
FoalFoal
GrowthGrowth
PerformancePerformance
Blue Seal Inspire Charger is a 6% fat textured feed intended for broodmares, growing, and performance horses. It is a complete feed with energy-dense ingredients such as wheat middlings, oats, molasses, and soybean meal.
Inspire Marathon (Blue Seal)
EnergyEnergy
FatFat
PerformancePerformance
StaminaStamina
Inspire Marathon is a textured feed intended for horses requiring a high-calorie diet, such as hard keepers. This energy-dense formula contains 12% fat and ingredients such as oats and vegetable oil.
Inspire Min-A-Vite Lite (Blue Seal)
HealthHealth
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
VitaminsVitamins
Inspire Min-A-Vite Lite by Blue Seal is a pelleted mineral and vitamin supplement formulated to balance grass and legume hay or pasture. It is intended for horses of all ages, weights, and activity levels.
Inspire Pacer (Blue Seal)
ExerciseExercise
FatFat
GrainsGrains
PerformancePerformance
Inspire Pacer is a textured feed intended for adult horses at different activity levels. This grain-based feed provides a blend of oats, corn, and barley mixed with vegetable oil and molasses to increase energy density.
Inspire PEAK Growth (Blue Seal)
FoalFoal
GrowthGrowth
LactationLactation
ProteinProtein
Inspire PEAK Growth from Blue Seal is a low NSC feed for lactating mares and young growing foals. It contains amino acids, vitamins and minerals, and antioxidants.
Inspire PEAK Mare & Foal (Blue Seal)
GrowthGrowth
LactationLactation
NutrientsNutrients
ProteinProtein
Inspire PEAK Mare & Foal from Blue Seal is a feed for growing foals and lactating mares. It is high in protein and contains vitamins, yeast, minerals, and antioxidants.
Inspire PEAK Performance 12 Textured (Blue Seal)
Amino AcidAmino Acid
AntioxidantAntioxidant
EnergyEnergy
PerformancePerformance
Inspire PEAK Performance 12 Textured from Blue Seal is a feed intended for performance or breeding horses. It contains amino acids, antioxidants, vitamins, and a blend of energy sources.
Inspire PEAK Performance 14 Pellet (Blue Seal)
BroodmareBroodmare
GrowthGrowth
LactationLactation
PerformancePerformance
Inspire PEAK Performance 14 Pellet by Blue Seal is a pelleted feed intended for growing, breeding, lactating and performance horses.
Inspire PEAK Performance 14 Textured (Blue Seal)
AntioxidantAntioxidant
EnergyEnergy
PerformancePerformance
ProteinProtein
Inspire PEAK Performance 14 Textured from Blue Seal is a feed intended for growing horses, performance horses, stallions, or breeding mares. It contains minerals, vitamins, yeast, amino acids and antioxidants.
Inspire PEAK Performance Amp (Blue Seal)
Amino AcidAmino Acid
EnergyEnergy
PerformancePerformance
VitaminsVitamins
Inspire PEAK Performance Amp from Blue Seal is a pelleted feed intended for performance horses. It is meant to provide high energy and contains amino acids, fat, vitamins and minerals.
Inspire PEAK Racer (Blue Seal)
Caloric EnergyCaloric Energy
GrainsGrains
PerformancePerformance
RespiratoryRespiratory
Inspire PEAK Racer from Blue Seal is a grain ration for performance horses such as racehorses. It is nutrient and calorie dense that has low dust and fiber, intended for horses with respiratory issues.
Inspire PEAK Secure (Blue Seal)
DigestionDigestion
HealthHealth
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Inspire PEAK Secure from Blue Seal is a low NSC feed that is intended for maintenance and performance horses. It contains vitamins, minerals, yeast, fiber and protein.
Inspire PEAK Versatility (Blue Seal)
Caloric EnergyCaloric Energy
LactationLactation
NutrientsNutrients
StallionStallion
Inspire PEAK Versatility from Blue Seal is a feed intended for growing horses, performance horses, breeding stallions, and lactating mares. It contains energy through carbs, fat and fiber.
Inspire Pride (Blue Seal) [Discontinued]
Complete FeedComplete Feed
FiberFiber
Gut HealthGut Health
NutrientsNutrients
Inspire Pride by Blue Seal is a complete feed that is intended for maintaining mature horses. It is in cube form and high in fiber and is meant to help with gut health.
Inspire Rider (Blue Seal)
ExerciseExercise
FlavorFlavor
GrainsGrains
PerformancePerformance
Inspire Rider is a complete textured feed intended for maintenance to lightly exercised adult horses. It is composed of grains coated in molasses to encourage palatability.
Inspire Senior (Blue Seal)
Complete FeedComplete Feed
FatFat
FiberFiber
SeniorSenior
Inspire Senior from Blue Seal is a complete feed intended for senior horses in performance or maintenance. It is high in fiber and fat, meant to support digestion and body condition.
Inspire Sport (Blue Seal)
EnergyEnergy
FatFat
PerformancePerformance
StaminaStamina
Blue Seal Inspire Sport is a pelleted grain ration intended for mature performance horses. Energy sources include wheat middlings, ground corn, wheat flour, cane molasses, and vegetable oil.
Inspire Strider (Blue Seal)
ExerciseExercise
GrainsGrains
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Blue Seal Inspire Strider is a pelleted grain-based feed intended for mature horses at maintenance or in light work. It is designed to provide lower protein and fat levels for horses that require reduced caloric energy or easy keepers.
Inspire Trotter (Blue Seal)
Complete FeedComplete Feed
DigestionDigestion
ExerciseExercise
FiberFiber
Inspire Trotter is a pelleted feed from Blue Seal, intended to supplement the diet of horses with limited access to forage (hay or pasture). It is formulated with wheat middlings, alfalfa meal and soybean hulls, and contains 14% protein.
Integrity Adult/Senior (Integrity Horse Feeds)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
SeniorSenior
Integrity Adult/Senior is a 5.4% starch textured feed designed for adult and senior horses in light to moderate work. Energy sources include beet pulp, soy hulls, rice bran, cane molasses, grains and canola oil.
Integrity Growth (Integrity Horse Feeds)
Caloric EnergyCaloric Energy
FoalFoal
GrowthGrowth
ProteinProtein
Integrity Growth is a textured feed designed for growing horses between 10-12 months to 3 years of age. It is formulated with 15% protein and 7.8% starch.
Integrity Lite (Integrity Horse Feeds)
FatFat
Low NSC FeedsLow NSC Feeds
ProteinProtein
Ration BalancerRation Balancer
Integrity Lite is a 4.3% starch textured feed intended for minis, pleasure horses, and easy keepers. It is a grain-free feed with a moderate fat content and low-calorie density.
Integrity Mare & Foal (Integrity Horse Feeds)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Integrity Mare & Foal is a pelleted feed designed for late-gestation mares, lactating mares and nursing, creep, and weanling foals. It has a 16.2% starch content.
Integrity Performance (Integrity Horse Feeds)
EnergyEnergy
ExerciseExercise
MuscleMuscle
PerformancePerformance
Integrity Performance is a high-calorie textured feed designed for adult horses in moderate to heavy work. It provides 10% fat and 8.7% starch.

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