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Microbial-based Additives - Feed Ingredient

Microbial-based additives include live microorganisms such as yeasts (Saccharomyces cerevisiae) and bacteria (Lactobacillus, Bifidobacterium, Enterococcus), as well as their derivatives like bacterial or yeast extracts and fermentation products. These additives are used in equine feeds to support gut microbial balance, improve fiber digestion, and enhance nutrient utilization.
Extracts and postbiotics may include cell wall components (e.g., beta-glucans, mannan-oligosaccharides) or fermentation metabolites that influence gut function and immunity. Enzymes produced through microbial fermentation, such as cellulase or xylanase, may also be included to assist in the breakdown of fibrous feed components.

The following equine feeds, supplements and products contain Microbial-based Additives 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.
Optimum Digestive Health Pellets (Mad Barn)
DigestionDigestion
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
ProbioticProbiotic
Optimum Digestive Health from Mad Barn is a probiotic and prebiotic supplement designed to support hindgut health in the horse. It helps to maintain a stable microflora and promote immune health.
Optimum Probiotic (Mad Barn)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
Mad Barn's Optimum Probiotic is a pure 5-strain probiotic supplement in a powdered format. It provides 20 billion CFU per serving of L. acidophilus, L. fermentum, L. casei, L. plantarum, and L. farciminis.
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.
Visceral+ (Mad Barn)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
ProbioticProbiotic
UlcersUlcers
YeastYeast
Visceral+ by Mad Barn is a pelleted supplement to be used for horses with gastric health concerns. It is designed to maintain stomach and hindgut health and to support the immune system.
Ultra GH (Tribute)
FatFat
Feed EfficiencyFeed Efficiency
FiberFiber
Gut HealthGut Health
Tribute Ultra GH is a complete pelleted feed intended to support gastrointestinal health in performance horses. It contains added microencapsulated dry yeast, direct-fed microbials, organic and inorganic trace minerals. It provides 8% crude fat and 21.5% NSC.
Ultra Mate (Elk Grove Milling)
Competition HorsesCompetition Horses
EnergyEnergy
JointsJoints
Weight IssuesWeight Issues
Ultra Mate by Elk Grove Milling is a corn based supplement intended to provide extra energy for competition horses, hard keepers, stallions and lactating mares.
UltraCruz Equine Appetite Support (Santa Cruz Animal Health)
Gut HealthGut Health
ProbioticProbiotic
Weight IssuesWeight Issues
YeastYeast
UltraCruz Equine Appetite Support Supplement is a pelleted supplement intended to increase appetite and support digestive health. It provides 30 billion CFU of probiotics and prebiotics, as well as 2 grams of L-glutamine per serving (56 grams). It can be fed to stressed horses and weanlings.
UltraCruz Equine Calming Supplement (Paste) (Santa Cruz Animal Health)
Amino AcidAmino Acid
CalmingCalming
NutrientsNutrients
VitaminsVitamins
UltraCruz Equine Calming Supplement by Santa Cruz Animal Health is formulated to encourage relaxation in horses that are tense or anxious. The recommended dose is two syringes of paste per day. This supplement contains several B-vitamins, along with magnesium, calcium and the amino acid theanine.
UltraCruz Equine Probiotic (Santa Cruz Animal Health)
Gut HealthGut Health
HindgutHindgut
ProbioticProbiotic
YeastYeast
UltraCruz Equine Probiotic by Santa Cruz is a probiotic and prebiotic supplement for horses intended to support a healthy digestive tract. The pelleted version supplies 30 billion CFU/serving (28 grams), and the powder version supplies 450 million CFU/serving (15 grams).
UltraCruz Equine Probiotic Paste (Santa Cruz Animal Health)
HindgutHindgut
PrebioticPrebiotic
ProbioticProbiotic
YeastYeast
UltraCruz Equine Probiotic Paste Supplement provides 200 million CFU (per 15 mL serving) of probiotics and prebiotics meant to support healthy digestive function. It is intended for horses or foals experiencing stress from dietary changes, antibiotics, and/or exercise.
UltraCruz Foal Advanced Probiotic Paste (Santa Cruz Animal Health)
DigestionDigestion
FoalFoal
Gut HealthGut Health
ProbioticProbiotic
UltraCruz Foal Advanced Probiotic Paste is intended for use in newborn to weaned foals. It contains probiotics (Lactobacillus rhamnosus), yeast (Saccharomyces cerevisiae), L-glutamine, and digestive enzymes (lactase and amylase) blended in flaxseed oil.
Ultramin (Equis Feed)
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
YeastYeast
Ultramin by Equis Feed is a free-choice vitamin-mineral supplement for horses that can also be used to top-dress rations. It is formulated with organic minerals, biotin, yeast, and calcium carbonate.
Unbeetable Complete (Unbeetable Feeds)
EnergyEnergy
Grain FreeGrain Free
Low NSC FeedsLow NSC Feeds
ProteinProtein
Unbeetable Complete by Unbeetable feeds is a grain free complete feed intended for all horse types. It contains a blend of organic and inorganic trace minerals.
Ungulate (St.Hippolyt)
Hoof HealthHoof Health
NutrientsNutrients
NutritionNutrition
Organic Trace MineralsOrganic Trace Minerals
Ungulate by St.Hippolyt is a pelleted supplement intended to support hoof health in horses.
Vegetable Herbal Minerals (St.Hippolyt)
BroodmareBroodmare
FoalFoal
GrowthGrowth
LactationLactation
Vegetable Herbal Minerals by St.Hippolyt is a pelleted supplemented intended for pregnant, lactating and young horses.
Veloci-T Max (Purina)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
PerformancePerformance
Purina Veloci‑T Max is a textured feed intended for racehorses, breeding stallions, early gestating mares, and yearlings. . It is formulated with higher fat and starch levels to meet the high energy demands of performance horses.
Velocity (Ark Nutrition)
Complete FeedComplete Feed
ExerciseExercise
NutritionNutrition
ProteinProtein
Velocity by Ark Nutrition is a pelleted feed intended for horses in moderate to heavy work. It contains a blend of essential amino acids and fatty acids meant to support muscle development and improve muscle recovery.
Vermont Blend (Custom Equine Nutrition)
Amino AcidAmino Acid
DigestionDigestion
Mineral BalanceMineral Balance
YeastYeast
Vermont Blend by Custom Equine Nutrition is a supplement intended to balance out the deficiencies when a horse is solely fed grass hay. It contains amino acids, biotin and minerals such as copper and magnesium.
Vermont Blend No Selenium (Custom Equine Nutrition)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
YeastYeast
Vermont Blend No Selenium is a mineral and vitamin supplement containing no added selenium for horses with diets that already contain adequate amounts of this trace mineral.
Vermont Blend Pellets (Custom Equine Nutrition)
Amino AcidAmino Acid
Mineral BalanceMineral Balance
VitaminsVitamins
YeastYeast
Vermont Blend by Custom Equine Nutrition is a pelleted supplement intended to be fed to horses solely on grass hay. It contains amino acids, biotin and minerals such as copper and magnesium.
Vermont Blend Pro (Custom Equine Nutrition)
Gut HealthGut Health
Hoof HealthHoof Health
Organic Trace MineralsOrganic Trace Minerals
Ration BalancerRation Balancer
Vermont Blend Pro is a forage balancer and hoof supplement with added yeast cultures. It uses organic sources of copper and zinc. It has a lower feeding rate than the original Vermont Blend.
Vermont Blend Pro No Selenium (Custom Equine Nutrition)
Amino AcidAmino Acid
Gut HealthGut Health
Hoof HealthHoof Health
Ration BalancerRation Balancer
Vermont Blend Pro No Selenium by Custom Equine Nutrition is a supplement containing no added selenium intended for horses with diets that already contain adequate amounts of this trace mineral.
Versa (Sollio Agriculture)
HealthHealth
ImmunityImmunity
NutrientsNutrients
NutritionNutrition
Versa is a pelleted feed intended for horses in all forms of exercise. This feed contains 14% crude protein and 6% fat. Versa is intended to be fed as an all-purpose feed.
Vert Tendre (Mondou)- [Discontinued]
EnergyEnergy
FiberFiber
NutritionNutrition
ProteinProtein
Vert Tendre is a cubed feed that can be used to replace up to 50% of hay in the horse's diet. It consists of soy hulls, alfalfa meal, vegetable proteins and added vitamins and minerals.
Veteran Light (Allen & Page)
DigestionDigestion
Easy KeeperEasy Keeper
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Veteran Light from Allen & Page is a low-energy pelleted feed that is high in fibre with a low NSC content (8.5%). Veteran Light is a palatable horse feed with added probiotics.
Veteran Supplement (NAF Equine)
Mineral BalanceMineral Balance
SeniorSenior
VitaminsVitamins
YeastYeast
Veteran Supplement from NAF Equine is intended for senior horses and ponies. This supplement is meant to support digestive health and provide micronutrient that are essential for overall health.
Veteran Vitality (Allen & Page)
DigestionDigestion
IngredientIngredient
NutritionNutrition
SeniorSenior
Veteran Vitality from Allen & Page is a palatable feed for horses with poor dentition. This feed is high in fibre and includes added vitamins and minerals. Veteran Vitality contains herbs such as mint, nettle, dandelion, garlic, and fenugreek.
Via-Calm (AniMed)
CalmingCalming
Mineral BalanceMineral Balance
PerformancePerformance
StressStress
AniMed's Vita-Calm is a supplement that is meant to reduce stress and provides vitamins, minerals, and amino acids. It can help calm horses, especially before events which may cause nervousness.
Victory! (Seminole)
FatFat
Feed EfficiencyFeed Efficiency
PerformancePerformance
StaminaStamina
Seminole Victory!™ is a beet pulp-based textured feed containing oats, barley and stabilized rice bran. It contains 29% NSC and is targetted to mature performance horses.
Vintage Mare & Foal (Blue Seal) – [Discontinued]
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Vintage Mare & Foal by Blue Seal is a now-discontinued feed which was a high-protein, high-energy extruded feed targeted to broodmares during pregnancy and lactation, as well as growing horses. It contained grains such as oats, corn, and barley, as well as soybean and alfalfa meal.
Vintage Sweet (Blue Seal) – [Discontinued]
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
NutritionNutrition
Weight IssuesWeight Issues
Vintage Sweet by Blue Seal is a now-discontinued feed with lower-protein, high-fat extruded feed formulated for working horses. It contained 12% crude protein and 8% fat, with energy supplied by cracked corn, oats, wheat, molasses, and oil.
Vintage Versatility (Blue Seal) – [Discontinued]
Caloric EnergyCaloric Energy
ExerciseExercise
GrowthGrowth
LactationLactation
Vintage Versatility by Blue Seal is a now-discontinued extruded feed designed for growth, performance and lactation. It contained 14% crude protein and 10% fat, with energy sources coming from oats, soybeans, oil, and corn.
Vital 33 (Menuerie Benjamin)
HealthHealth
Organic Trace MineralsOrganic Trace Minerals
ProteinProtein
VitaminsVitamins
Vital 33 by Meunerie Benjamin is a high-protein, high-energy equine supplement formulated to support topline development and improve overall body condition. This supplement can be fed on its own or alongside a complete feed.
Vital Glo (Meunerie Benjamin)
Gut HealthGut Health
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
Vital Glo from Meunerie Benjamin is a cubed supplement containing vitamins and minerals. It is meant to support growing, performance or reproductive horses. It is also intended to assist with gut, joint, and hoof health.
Vital Muesli “Best Years” (St.Hippolyt)
DigestionDigestion
NutritionNutrition
RecoveryRecovery
SeniorSenior
Vital Muesli "Best Years" by St.Hippolyt is a textured feed intended for senior horses, fast eaters and horses with chewing problems.
Vital Muesli (Dodson & Horrell)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
GrainsGrains
PerformancePerformance
Vital Muesli is a high starch feed designed for racehorses in full training. This feed includes the elevated protein and fat levels required to sustain the heavy workload and the vitamins and minerals necessary for proper nutrient absorption.
Vitalize Equine Digest More Plus (Biozyme)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
PrebioticPrebiotic
Vitalize Equine Digest More Plus is meant to be an equine gut health supplement made by BioZyme. It contains prebiotics, biotin, zinc, and Amaferm (Aspergillus oryzae fermentation product).
Vitalize Equine Free Choice (BioZyme)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Vitalize Equine Free Choice by BioZyme is a vitamin and mineral supplement that supports digestion, nutrient absorption, and hindgut support. This feed additive is for horses on pasture and includes a prebiotic that aids with digestion.
Vitalize Equine High Performance (Biozyme)
Gut HealthGut Health
Mineral BalanceMineral Balance
PrebioticPrebiotic
VitaminsVitamins
Vitalize Equine High Performance by Biozyme is a pelleted supplement containing vitamins and minerals, it is intended for performance horses.
Vitalize Equine Protein Pellet (BioZyme)
BroodmareBroodmare
GrowthGrowth
ProteinProtein
SeniorSenior
Vitalize Equine Protein Pellet by Biozyme is a protein supplement intended for growing, breeding, senior and performance horses.
Vitalize Equine Vitamin & Mineral Supplement (Biozyme)
DigestionDigestion
Mineral BalanceMineral Balance
PrebioticPrebiotic
VitaminsVitamins
Vitalize Equine Vitamin and Mineral Supplement by Biozyme is a powdered vitamin and mineral supplement intended to support nutritional and digestive health in horses.
Vitamin B1 – Thiamine (Herbs for Horses)
Competition HorsesCompetition Horses
MetabolismMetabolism
RecoveryRecovery
StressStress
Herbs for Horses' Vitamin B1 supplement provides Thiamine which is an essential B vitamin for growth, appetite and energy metabolism. Thiamine also aids in calming nervous or anxious horses.
Vitamin E & Folic Acid (AniMed)
MuscleMuscle
NutrientsNutrients
StressStress
VitaminsVitamins
This AniMed supplement contains folic acid, vitamin E, and B vitamins. This supplement is meant to help with stress and muscle functions. It is supposed to be effective for any horse.
Vitamin E & Se (Cox Veterinary Laboratory, Inc.)
AntioxidantAntioxidant
Mineral BalanceMineral Balance
RecoveryRecovery
VitaminsVitamins
Vitamin E & Se from Cox Veterinary Labs is an antioxidant supplement providing 2 mg of Selenium from selenized yeast and 1,250 IU of Vitamin E per oz.
Vitamin E & Selenium (AniMed)
AntioxidantAntioxidant
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
This powdered supplement from AniMed is an antioxidant that contains vitamin E, selenium, yeast and zinc. These help support a healthy immune system and digestive and gut health.
Vitamin E & Selenium Formula (Vita Flex)
AntioxidantAntioxidant
HealthHealth
ImmunityImmunity
Organic Trace MineralsOrganic Trace Minerals
Vita Flex E and Selenium is a powdered vitamin E and selenium supplement intended to support muscle function and metabolism in horses. Each serving provides 1 mg selenium from inorganic sodium selenite and 1,000 IU vitamin E.
Vitamin E & Selenium Plus (NAF Equine)
AntioxidantAntioxidant
Competition HorsesCompetition Horses
MuscleMuscle
VitaminsVitamins
Vitamin E & Selenium Plus from NAF Equine is intended for performance horses. This supplement contains vitamin E which is meant to work as an antioxidant in horses.
Vitamin E + Selenium (St.Hippolyt)
AntioxidantAntioxidant
Competition HorsesCompetition Horses
PerformancePerformance
VitaminsVitamins
Vitamin E + Selenium by St.Hippolyt is a supplement that contains a high amount of vitamin E and is intended for sport horses.
Vitamin E-5000 (HorseTech)
AntioxidantAntioxidant
HealthHealth
NutrientsNutrients
VitaminsVitamins
Vitamin E-5000 by HorseTech is a Vitamin E supplement. It contains 5000 IU of synthetics vitamin E per ounce.
Vitamin Gold (Dumor)
ImmunityImmunity
Mineral BalanceMineral Balance
VitaminsVitamins
YeastYeast
DuMOR Vitamin Gold is a pelleted mineral and vitamin supplement intended for all classes of horses and ponies. It is formulated to supplement diets containing poor quality forage.
Vitamins & Electrolyte Plus (AgriLabs/ProLabs)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
VitaminsVitamins
AgriLabs Vitamins & Electrolyte Plus is a water-soluble powder supplement that provides vitamins, electrolytes and acidifiers for livestock animals and poultry. It is formulated for use during periods of stress or reduced feed intake.
Vitamins & Minerals Alfalfa (Equine Challenge)
HealthHealth
Mineral BalanceMineral Balance
Ration BalancerRation Balancer
VitaminsVitamins
Vitamins and Minerals Alfalfa by Equine Challenge is a vitamin and mineral supplement intended for horses on Alfalfa based diets.
Vitamins & Minerals Grass (Equine Challenge)
Vitamins & Minerals Grass from Equine Challenge is an equine supplement formulated for horses on grass diets. Vitamins & Minerals Grass is intended to assist in healthy coat and hoof growth. This supplement is formulated with flaxseed, added vitamins, minerals, and probiotics.
Vitamins & Minerals Grass No Selenium (Equine Challenge)
HealthHealth
Omega 3-6-9Omega 3-6-9
Ration BalancerRation Balancer
Skin + HairSkin + Hair
Vitamins & Minerals Grass No Selenium by Equine Challenge is a ration balancer intended to support overall health in horses on grass or oat-based diets.

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