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Saccharomyces cerevisiae - Feed Ingredient

Saccharomyces cerevisiae is a species of yeast commonly used as a probiotic and digestive aid in animal feed. It is included in equine diets to support gut health, improve fiber digestion, and promote a balanced microbial population in the hindgut.

In equine nutrition, Saccharomyces cerevisiae is often added to feeds and supplements to enhance the fermentation of fibrous feedstuffs, leading to better nutrient absorption and digestive efficiency. It may be particularly beneficial for horses on high-fiber diets, those undergoing dietary transitions, or those prone to digestive disturbances such as colic or hindgut acidosis. While live yeast cultures provide direct probiotic effects, dried yeast products containing fermentation metabolites can also contribute to gut health and feed efficiency.

The following equine feeds, supplements and products contain Saccharomyces cerevisiae 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.
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.
Staggers Mix (Dunstan)
Caloric EnergyCaloric Energy
DigestionDigestion
GrainsGrains
NutrientsNutrients
Staggers Mix by Dunstan is a textured mix of extruded cereals, barley, peas, soybean meal, vegetable oil, vitamins and minerals. It also includes Mannan Oligosaccharide and Aluminosilicate Clay intended to improve digestive comfort.
Stake Horse (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Stake Horse by Woody’s Horse Nutrition is a beet-based 9% fat and 13% protein feed intended for racehorses. It is made with molasses, oats, barley, and beet pulp. This horse is intended for racehorses or performance horses.
Step Right Horse Mineral (Trouw Nutrition) [DISCONTINUED]
Gut HealthGut Health
HealthHealth
Ration BalancerRation Balancer
VitaminsVitamins
Step Right Horse Mineral (formerly Step 7b Pro Equine Supplement) is a concentrated mineral and vitamin supplement for horses in a loose powdered format. It is intended for horses that are not consuming complete feed, horses on pasture, or easy keepers.
Stock Builder (Star Milling Co)
ExerciseExercise
GrowthGrowth
MuscleMuscle
ProteinProtein
Stock Builder by Star Milling Co is a high protein supplement formulated with ingredients such as soybean meal, ground cereal grains and whey. It contains a minimum of 25% protein and no added minerals and vitamins.
Stud Mix (Bluegrass Horse Feed)
BroodmareBroodmare
DigestionDigestion
GrowthGrowth
StallionStallion
Stud Mix is formulated to help with digestion and nutrient uptake in breeding stock, including broodmares, stallions, and growing horses. It contains 14% protein, 6.2% fat, and 10.4% fibre.
Summer Heat (Woody’s Horse Nutrition)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Woody’s Summer Heat is a complete feed formulated for performance horses in heavy to intense work. It contains 12.5% protein and 7.0% fat, and is made with oats, barley, molasses and beet pulp.
Support Pro (Formula 707)
CalmingCalming
DigestionDigestion
Gut HealthGut Health
UlcersUlcers
Support Pro from Formula 707 is a pelleted supplement that is intended to support digestion, stomach and hindgut health. It is also meant for calming or ulcer support.
SupportPRO (Horse Logic Pro) – [Discontinued]
Competition HorsesCompetition Horses
Gut HealthGut Health
HealthHealth
ImmunityImmunity
SupportPRO from Horse Logic Pro is a pelleted gut supplement. SupportPRO is intended to provide hindgut support to horses who struggle with gastric issues during periods of stress. SupportPRO contains 12% crude protein and 1.25% fat.
SynBioVit (TRM)
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
YeastYeast
SynBioVit from TRM is a supplement for horses containing live yeast Saccharomyces Cerevisiae, probiotics and yeast. SynBioVit can be used during times of stress, or for horses with poor hindgut health.
Synergy (Thunderbrook)
Gut HealthGut Health
HealthHealth
HerbHerb
ImmunityImmunity
Synergy from Thunderbrook is a concentrated feed intended for all types of horses. Synergy contains prebiotics, herbs, and botanicals intended to support gut health.
Total Wellness (KER)
Coat QualityCoat Quality
HealthHealth
ImmunityImmunity
JointsJoints
Total Wellness is a supplement from Kentucky Equine Research. This supplement contains ingredients such as MSM, Biotin, and Glucosamine intended to promote joint health, and coat quality in horses.
Tough as Nails (Tribute)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Tribute Tough As Nails is a pelleted horse supplement formulated to support hoof growth. It contains biotin, calcium, iodine, organic minerals and the amino acid methionine.
Trail Mix (Running Horse Elite Equine Nutrition)
Complete FeedComplete Feed
FiberFiber
HealthHealth
Mineral BalanceMineral Balance
Running Horse Trail Mix is a concentrated feed containing high fiber, vitamins, minerals, and 12% protein. This feed targets adult horses that are inactive or performing light work.
Tribute Ultra (Tribute)
ExerciseExercise
FatFat
NutrientsNutrients
Weight IssuesWeight Issues
Tribute Ultra is intended for hard keepers and horses and ponies in heavy work. This feed is meant to support weight gain and performance with its 12% fat and 12% protein formula.
Trifecta (Buckeye) – [Discontinued]
Complete FeedComplete Feed
FlavorFlavor
NutritionNutrition
PerformancePerformance
Buckeye TRIFECTA™ Sweet Pelleted Feed is a palatable and calorie-dense feed containing cane molasses to increase intake. TRIFECTA™ is intended for performance horses with higher energy demands.
Trifecta (Horse Guard)
HealthHealth
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
Trifecta from Horse Guard is a powdered vitamin, mineral, hoof, and joint supplement with added prebiotics and probiotics. It contains glucosamine, MSM, and hyaluronic acid to help with joint support. Trifecta also contains added iron and 32 mg of biotin per serving.
Tru Care (Hygain)
DigestionDigestion
NutrientsNutrients
NutritionNutrition
SeniorSenior
Tru Care from Hygain is an extruded feed intended for horses requiring extra calories, such as senior horses. Tru Care contains glucosamine intended to support joint health.
ULS-Gard Pellets (Equine America)
DigestionDigestion
Gut HealthGut Health
NutrientsNutrients
ProbioticProbiotic
ULS-Gard Pellets from Equine America is a stomach and gastrointestinal tract supplement. It is meant to support normal pH, proper function and contains pro- and prebiotics.
Ultra Dynamix (Seminole)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Organic Trace MineralsOrganic Trace Minerals
ProteinProtein
Seminole Ultra Dynamix™ is a high-calorie pelleted horse feed for growing, breeding and performance horses. It contains oats, corn, digestible fibers, soybean oil and stabilized rice bran.
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.
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 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.
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 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.
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 & 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.
WaterWerks (HorseTech)
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
YeastYeast
WaterWerks from HorseTech is a supplement that is meant to provide digestive support and is meant for horses with free fecal water syndrome or leaky gut syndrome. It contains live yeast and bacteria for gut health.
Woody’s Complete Pellet Feed (Woody’s Horse Nutrition)
Complete FeedComplete Feed
FatFat
FiberFiber
Grain FreeGrain Free
Woody’s Complete is a pelleted feed intended for the majority of adult horses. It is composed of beet pulp, soybeans, alfalfa meal and rice bran and contains added probiotics and chelated trace minerals.
XPC Yeast Culture (Diamond V)
Feed EfficiencyFeed Efficiency
HindgutHindgut
ImmunityImmunity
YeastYeast
Diamond V® XPC is a feed additive and microbial fermentate product that supports the immune system and performance. It is based on a Saccharomyces cerevisiae yeast culture.
Yea-Sacc (AniMed)
ColicColic
Gut HealthGut Health
IngredientIngredient
YeastYeast
Yea-Sacc from AniMed contains only Yea-Sacc, a form of yeast. It is meant to support hindgut health, to maintain gut pH, and potentially contribute to reducing the risk of colic in horses.
Yea-Sacc (Saracen Horse Feeds)
DigestionDigestion
Feed EfficiencyFeed Efficiency
HindgutHindgut
YeastYeast
Yea-Sacc is a yeast supplement intended to help with digestion and gut health.
Yea-Sacc® Farm Pak (Alltech)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
YeastYeast
Yea-Sacc® Farm Pak from Alltech is a proprietary yeast culture containing Saccharomyces cerevisiae strain 1026. Yea-Sacc® supports feed efficiency and gut health.
Yea-Sacc® Farm Pak 2X (Alltech)
Feed EfficiencyFeed Efficiency
HindgutHindgut
Toxin BinderToxin Binder
YeastYeast
Alltech's Yea-Sacc® Farm Pak 2X is a yeast culture supplement based on Saccharomyces cerevisiae strain 1026. This strain is well-researched for its effects on feed efficiency in livestock animals.
Yea-Sacc1026 (Alltech)
DigestionDigestion
Gut HealthGut Health
IngredientIngredient
YeastYeast
Yea-Sacc® is a yeast culture additive that uses Saccharomyces cerevisiae strain 1026 to potentially support digestion and nutrient utilization in livestock animals.
Yeast Culture
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
Toxin BinderToxin Binder
YeastYeast
Yeast cultures are live microbes that have a probiotic effect on the horse's hindgut. Feeding yeast supports hindgut fibre digestion and may reduce digestive issues, especially in horses on high-starch diets.
Yeast XP (Diamond V)
HindgutHindgut
ProbioticProbiotic
Toxin BinderToxin Binder
YeastYeast
Diamond V® XP yeast is a proprietary microbial fermentate formulated with Saccharomyces cerevisiae yeast. This feed additive helps to support digestion and immune health.
Zorien Gold (Novus)
Feed EfficiencyFeed Efficiency
Gut HealthGut Health
PrebioticPrebiotic
YeastYeast
ZORIEN® Gold is a yeast-based feed additive used as a prebiotic ingredient in livestock diets. It is a source of mannan oligosaccharides (MOS) and beta-glucans.

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