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Organic Selenium - Feed Ingredient

Organic selenium refers to selenium that is bound to organic compounds, typically in the form of selenomethionine or selenized yeast. Unlike inorganic selenium sources such as sodium selenite or sodium selenate, organic selenium is more bioavailable and efficiently utilized by the horse’s body. It is also considered a safer source of selenium.

Selenium is an essential trace mineral required for antioxidant function, immune support, and muscle integrity. In equine diets, organic selenium is often preferred due to its higher absorption rate and incorporation into proteins, allowing for more sustained selenium availability compared to inorganic forms.

While essential for horses and necessary in diets where soils are selenium deficient, excessive selenium intake can be toxic. Selenium supplementation should be carefully managed to prevent toxicity while ensuring adequate intake for optimal health.

The following equine feeds, supplements and products contain Organic Selenium 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.
Equilibrium Maternity XT (Purina)
BroodmareBroodmare
Complete FeedComplete Feed
GrowthGrowth
LactationLactation
Equilibrium Maternity XT is an extruded feed formulated for gestating mares as well as nursing and growing foals. It provides high energy and protein (16.5%) from ingredients such as soybean meal, flax, wheat, soybean oil and molasses.
Equilibrium Optimal (Purina)
BroodmareBroodmare
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Equilibrium Optimal is a ration balancer formulated for all classes of horses. It can be fed alone or in combination with complete feeds or other feed ingredients such as beet pulp.
Equilibrium Pro Plus (Purina)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
FatFat
PerformancePerformance
Equilibrium Pro Plus by Purina is intended for performance horses, stallions, broodmares and growing foals. It contains 14% protein and 7% fat from sources such as soy hulls, soybean meal, ground corn, and ground wheat.
Equilibrium Sport XT (Purina) – [Discontinued]
Caloric EnergyCaloric Energy
ExerciseExercise
GrowthGrowth
PerformancePerformance
Equilibrium Sport XT is an extruded feed formulated for performance, breeding and growing horses. It provides high fat (10%) and moderate protein (14%) from ingredients including soybean meal, flax, wheat, soybean oil and molasses.
Equilibrium Trimax (Purina)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
PerformancePerformance
Weight IssuesWeight Issues
Purina Equilibrium Trimax is an energy-dense multi-particle feed intended for hard-keepers and performance horses. It provides 12% fat from vegetable oils and fermentable fibre from beet pulp to meet higher calorie requirements.
Equilibrium® XCEL HD (Purina Canada)
Competition HorsesCompetition Horses
FatFat
HindgutHindgut
Weight IssuesWeight Issues
Equilibrium® XCEL HD is a high-fat feed from the Purina Platinum product line. This low glycemic feed contains higher fat and fibre content and is intended for equine athletes and hard keepers.
Equiline Accelerator Plus Ration Balancer (Shur-Gain)
Easy KeeperEasy Keeper
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Aquiline Accelerator Plus Ration Balancer by Shur-Gain is a pelleted mix of vitamins, minerals, and amino acids. It is designed for maintenance and growth of easy keepers.
EquiMin Loose Mineral (Nutrena)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
EquiMin Loose Mineral is a powdered mineral and vitamin supplement intended as a top-dressing for horses on a forage-only feeding program. This powdered mineral is designed to support immune response and health and coat health.
Equine 12-8 Mineral (Tribute)
HealthHealth
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
Tribute Equine 12-8 is a vitamin/mineral supplement intended for all horses. It contains a blend of organic and inorganic mineral sources.
Equine Aged/Adult Diet (Ace Hi Feeds)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
SeniorSenior
Equine Aged/Adult Diet by Ace Hi Feeds is intended for mature or senior horses. It is available with or without molasses and contains added vitamins and minerals. This is a textured feed meant to be fed alongside a forage.
Equine Concentrate (Paddock Tree Nutraceuticals)
Grain FreeGrain Free
HealthHealth
NutrientsNutrients
NutritionNutrition
Equine Concentrate by Paddock Tree Nutraceuticals is a concentrate formulated to be fed along with highly digestible fibre sources, like beet pulp or forage cubes. It is intended for all horse types.
Equine Focus (Bar Ale)
FiberFiber
MuscleMuscle
NutrientsNutrients
YeastYeast
Equine Focus from Bar Ale is intended to be fed to horses and ponies of all ages and work levels. Equine Focus contains beet pulp and soybean meal. Equine Focus total NSC content is 21%.
Equinox (Probiotech)
AntioxidantAntioxidant
HealthHealth
VitaminsVitamins
YeastYeast
Equinox from Probiotech is a supplement that contains antioxidants that can help protect against free radicals. It is also meant to reduce oxidative stress.
EquiSeO (Sollio Agriculture)
AntioxidantAntioxidant
HealthHealth
MuscleMuscle
NutrientsNutrients
EquiSeO by Sollio Agriculture is a pelleted selenium and vitamin E supplement. It is intended for horses with inadequate selenium intake.
Equistages (DuMor)
HealthHealth
NutrientsNutrients
NutritionNutrition
ProbioticProbiotic
Equistages by DuMor is a pelleted feed intended to support overall health in all horse types.
EquiZyme (Bio-Nutrition Laboratories)
HealthHealth
Mineral BalanceMineral Balance
PrebioticPrebiotic
VitaminsVitamins
EquiZyme from Bio-Nutrition Laboratories is a vitamin-mineral supplement. This supplement contains added manno-oligosaccharides, selenium and yeast cultures intended for horses in various performance levels.
Essential (DePaolo Equine Concepts)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Essential by DePaolo Equine Concepts is a pelleted supplement that intends to promote healthy coat and hooves, and support a strong immune system. It contains ingredients such as L-Lysine, Biotin, and Vitamins A, B, D, and E.
Essential K (Tribute)
Amino AcidAmino Acid
HealthHealth
Ration BalancerRation Balancer
VitaminsVitamins
Tribute Essential K is a ration balancer with a low 12.5% NSC (sugar plus starch). Essential K provides a mix of organic and inorganic trace minerals, including organic selenium yeast.
Essential K GC Plus (Tribute)
JointsJoints
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Ration BalancerRation Balancer
Tribute Essential K GC Plus is a lower-inclusion ration balancer formulated with glucosamine, chondroitin sulfate, and MSM meant to support joint health.
Essential K Rebuild (Tribute)
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Ration BalancerRation Balancer
RecoveryRecovery
Essential K Rebuild by Tribute is a low-starch, low-sugar pelleted ration balancer formulated for performance horses. Different from Essential K, it has added chromium and turmeric.
Essential K w/ Fly Control (Tribute)
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
VitaminsVitamins
Tribute Essential K with Fly Control is a low feeding-rate ration balancer with Diflubenzuron, which can regulate the emergence of common flies.
Esteem Complete Pellet (Bar Ale)
ExerciseExercise
FiberFiber
NutritionNutrition
VitaminsVitamins
Esteem Complete Pellet is a high fiber feed. It is intended for horses and ponies of all ages and work levels. It contains 13% protein, 3.2% fat, and 23% fiber.
Esteem Complete Senior Pellet (Bar Ale)
FiberFiber
NutritionNutrition
SeniorSenior
VitaminsVitamins
Esteem Complete Senior Pellet is a pelleted feed intended for senior horses and ponies. Esteem Complete Senior Pellet is formulated with glucosamine and chondroitin.
Esteem Complete Senior Textured (Bar Ale)
Gut HealthGut Health
NutritionNutrition
SeniorSenior
YeastYeast
Esteem Complete Senior Textured from Bar Ale is intended for senior horses. Esteem Complete Senior Textured is a textured horse feed formulated with beet pulp and alfalfa meal.
EveryDayBalance (Enviro Equine)
PerformancePerformance
Ration BalancerRation Balancer
Skin + HairSkin + Hair
Weight IssuesWeight Issues
EveryDayBalance by Enviro Equine is a flax-based vitamin and mineral supplement intended to support overall health and well-being in all horse types.
ÉvoluFib (Meunerie Soucy)
BroodmareBroodmare
Complete FeedComplete Feed
FoalFoal
VitaminsVitamins
ÉvoluFib from Meunerie Soucy is a complete pelleted feed. It is intended for foals and pregnant or lactating broodmares. It contains vitamins and minerals.
Evolution Elite (Purina)
Complete FeedComplete Feed
ExerciseExercise
Gut HealthGut Health
Weight IssuesWeight Issues
Purina Evolution Elite is a multi-particle complete feed containing extruded and pelleted components. It is formulated with 13% protein and 8% fat.
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.
Evolution Senior (Purina)
Caloric EnergyCaloric Energy
Gut HealthGut Health
Ration BalancerRation Balancer
SeniorSenior
Purina Evolution Senior is a low glycemic pelleted and extruded horse feed intended for mature horses 15 years of age and older. it contains prebiotics, probiotics, yeast culture, and a balance of amino acids to help maintain ideal gut health.
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.
EZ-Balance (Purina Canada)
HealthHealth
Low NSC FeedsLow NSC Feeds
NutrientsNutrients
Ration BalancerRation Balancer
EZ-Balance is a low-calorie pelleted vitamin-mineral supplement formulated with organic copper, zinc and manganese. It has a low feeding rate of 150-200 grams per day.
Fab Fiber Plus (McCauley’s)
FiberFiber
HealthHealth
NutrientsNutrients
PerformancePerformance
Fab Fiber Plus from McCauley's is a textured feed intended for performance horses. It contains 17% fiber, 12% fat, and 12% protein.
Fat ‘N’ Fibre (pellet) (Masterfeeds)
ExerciseExercise
FatFat
FiberFiber
HealthHealth
Fat 'N' Fibre from Masterfeeds is a pelleted feed that is higher in fat and fibre. It is formulated for idle horses to horses in light work. Fat 'N' Fibre contains 12% protein, 5% fat, and 15% fiber.
Fiber & Fat Comfort (Meunerie Benjamin)
DigestionDigestion
FiberFiber
Gut HealthGut Health
ImmunityImmunity
Fiber & Fat Comfort by Meunerie Benjamin is a feed that is high in fiber and contains vitamins, minerals, and yeast. It is intended to support the immune system, gut health and digestion.
Fiber Boost (Ark Nutrition)
FiberFiber
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Ark Nutrition Fiber Boost is a concentrated fiber source with added vitamins and minerals. It has low sugar and starch content, suitable for metabolic 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 Balancer (Dunstan)
GrowthGrowth
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
Fibre Balancer by Dunstan is a semi-concentrate feed, intended for young growing horses that have access to high quality forage.
Fibre Grow (Dunstan)
BroodmareBroodmare
FiberFiber
FoalFoal
LactationLactation
Fibre Grow by Dunstan is a low-starch, high-fibre pellet intended to meet the requirements of pregnant and lactating mares as well as young growing horses.
Fibre O Plus (Brooks Feeds)
ExerciseExercise
FatFat
FiberFiber
Omega 3-6-9Omega 3-6-9
Fibre O Plus is a textured performance feed for horses with higher energy demands. It provides added calories from beet pulp and fat sources such as flax and rice bran.
Fibre Plus (Dunstan)
Bone HealthBone Health
Complete FeedComplete Feed
FiberFiber
GrowthGrowth
Fibre Plus by Dunstan is a high fibre, low starch pelleted feed intended to meet the nutrient requirements of young growing horses.
Fibre-Lite Forage Replacer (Brooks)
Easy KeeperEasy Keeper
FiberFiber
Hay StretcherHay Stretcher
SeniorSenior
Fibre-Lite Forage Replacer is a pelleted feed containing 25% fibre from digestible sources such as soy hulls, wheat shorts, alfalfa meal, and beet pulp. It can be used as a partial hay replacer or for horses with lower energy requirements.
Fibrenergy (Hallway Feeds)
Competition HorsesCompetition Horses
FiberFiber
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
Hallway Fibrenergy is a high-fat, high-fibre textured feed designed for performance horses. Fibrenergy is grain-free and uses beet pulp, soy hulls and oils for energy.
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.
Finger Lakes 12:7 (Poulin Grain)
Complete FeedComplete Feed
GrainsGrains
PerformancePerformance
ProteinProtein
Finger Lakes 12:7 by Poulin Grain is a textured feed intended for race horses. It contains corn, oats, and vitamin and mineral pellets. It supplies 12% crude protein, 7% fat, and 8% fiber.
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.
Finishing Touch (Masterfeeds)
Coat QualityCoat Quality
EnergyEnergy
FatFat
Weight IssuesWeight Issues
Masterfeeds Finishing Touch is a high-fat pelleted horse supplement that is used to promote weight gain or to provide fat as an energy source. It can be top-dressed on feed to increase the calorie density of the diet.
Fit & Fibre – Pelleted (Brooks Feeds)
Complete FeedComplete Feed
FatFat
FiberFiber
NutritionNutrition
Fit and Fibre is a high fat and fibre pelleted feed from Brooks Performance Horse Feeds. It contains a minimum of 6.50% fat and a maximum of 20% fibre with an NSC of 32.4% determined by independent testing. It is listed as a controlled NSC feed.

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