Analyze Diet
Home / Feeds / Ingredients /Mannanoligosaccharides (MOS)

Mannanoligosaccharides (MOS) - Feed Ingredient

Mannanoligosaccharides (MOS) are complex carbohydrates derived from the cell walls of Saccharomyces cerevisiae yeast. They are classified as prebiotics, meaning they serve as a food source for beneficial gut microbes rather than being directly digested by the horse. MOS contains mannose-rich sugar structures that can interact with gut bacteria.

In equine nutrition, MOS is included in feed formulations and supplements to support digestive health. It may help promote a balanced gut microbiome by reducing the attachment of undesirable bacteria to the intestinal lining. MOS is commonly used in feeds for young, stressed, or performance horses where gut health and immune function are a priority.

The following equine feeds, supplements and products contain Mannanoligosaccharides (MOS) 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.
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.
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.
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.
Horse Care 10 Cubes (Red Mills)
Competition HorsesCompetition Horses
DigestionDigestion
MuscleMuscle
Weight IssuesWeight Issues
Horse Care 10 Cubes from Red Mills is an oat-free horse feed. This feed is intended for performance horses, horses in training, easily stressed horses, and horses requiring additional body condition.
Horse Care 10 Mix (Red Mills)
Competition HorsesCompetition Horses
Gut HealthGut Health
MuscleMuscle
NutritionNutrition
Horse Care 10 Mix by Red Mills is a textured horse feed intended for competition, working, and temperamental horses. This feed is meant to support muscle and gastrointestinal function.
Horse Care 14 Cubes (Red Mills)
Competition HorsesCompetition Horses
Gut HealthGut Health
MuscleMuscle
NutritionNutrition
Horse Care 14 Cubes from Red Mills is intended for competition horses and temperamental horses. It is meant to support immune function, gastrointestinal health, muscle development, recovery, condition, and topline.
Horse Care 14 Mix (Red Mills)
Competition HorsesCompetition Horses
Gut HealthGut Health
ImmunityImmunity
NutritionNutrition
Horse Care 14 Mix from Red Mills is intended for competition horses and temperamental horses. It is meant to support immune function, gastrointestinal and hoof health, and muscle development.
Horse Care Ultra Cubes (Red Mills)
Competition HorsesCompetition Horses
DigestionDigestion
MuscleMuscle
NutritionNutrition
Horse Care Ultra Cubes from Red Mills is intended for performance horses, stallions, and horses prone to gastric issues. This feed contains 4% starch, 18% fiber, and 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.
Integrity Stabilized Rice Bran (Integrity Horse Feeds)
EnergyEnergy
FatFat
PerformancePerformance
Weight IssuesWeight Issues
Integrity Stabilized Rice Bran is a high-fat (20.5%) concentrate feed available in a meal or nugget format. It is intended for horses with higher energy requirements or to support weight gain.
Integrity with Timothy (Integrity Horse Feeds)
Omega 3-6-9Omega 3-6-9
ProteinProtein
Ration BalancerRation Balancer
YeastYeast
Integrity with Timothy is a pelleted feed containing wheat bran, soybean hulls, rice bran and timothy hay. It is intended for horses over 3 years of age and provides moderate calorie density.
Joint Feed Balancer (TopSpec)
Hoof HealthHoof Health
JointsJoints
NutrientsNutrients
Ration BalancerRation Balancer
Joint Feed Balancer from TopSpec is a ration balancer that contains 10g of glucosamine, hyaluronic acid, and 15mg of biotin. This ration balancer supports joint health and hoof health in horses and ponies.
Junior Horse (Ace Hi Feeds)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
NutritionNutrition
Junior Horse by Ace Hi Feeds is a supplemental feed intended for weanlings, yearlings and two-year olds. It contains 15.5% protein, vitamins, and a blend of organic and inorganic minerals.
Junior Horse (Kelley’s Feed)
FoalFoal
GrowthGrowth
NutritionNutrition
ProteinProtein
Junior Horse by Kelley's Feed is an alfalfa-based textured feed intended for weanlings, yearlings, and two-year-old's. It is intended to be fed alongside a quality forage as a supplement.
Lami Light Feed Balancer (Blue Chip Feed)
AntioxidantAntioxidant
Hoof HealthHoof Health
Ration BalancerRation Balancer
RespiratoryRespiratory
Lami Light Feed Balancer from Blue Chip Feed contains biotin to support hoof health, antioxidants to support immunity, and garlic to support the respiratory system. This balancer is intended for all horses and ponies.
Maestro (Keyflow Feeds)
Feed EfficiencyFeed Efficiency
Low NSC FeedsLow NSC Feeds
PerformancePerformance
ProbioticProbiotic
Maestro from Keyflow is a slow release energy feed to met the energy demands of performance horses. Maestro is low NSC and contains added probiotics to support horses’ gastrointestinal tract.
Mare & Foal (Ace Hi Feeds)
BroodmareBroodmare
FoalFoal
GrowthGrowth
NutritionNutrition
Mare & Foal by Ace Hi Feeds is a supplemental feed intended for growing, gestating and lactating horses. It contains at least 16% protein from sources such as soybean meal, whey, and dried distillers grains.
Mare & Foal (Kelley’s Feed)
BroodmareBroodmare
FoalFoal
GrowthGrowth
NutritionNutrition
Mare & Foal by Kelley's Feed is a supplemental feed intended for growing, gestating, and lactating horses. It is a barley-based feed that contains at least 16% protein, added vitamins, and a blend of organic and inorganic minerals.
Mare & Youngstock Concentrate (Dodson & Horrell)
BroodmareBroodmare
FoalFoal
GrowthGrowth
NutritionNutrition
Mare & Youngstock Concentrate by Dodson & Horrell is a feed designed to support the easy keeper broodmare and her foal. This feed includes vitamins and minerals and an elevated protein level to support optimal growth for the foal and maintain the mare.
Maxim Low-GI (Dunstan)
FiberFiber
HealthHealth
Low NSC FeedsLow NSC Feeds
NutritionNutrition
Maxim Low-GI by Dunstan is a high fibre feed formulated to be low in starch and sugar. It is intended for horses that do not do well on grain-based feeds.
Natural Digestive Support – BioEquine Supplement
DigestionDigestion
Mineral BalanceMineral Balance
ProbioticProbiotic
Toxin BinderToxin Binder
BioEquine Natural Digestive Support is an equine gut health supplement containing probiotics, toxin binders, Diatomaceous Earth, minerals, vitamins and amino acids.
Old Faithful’s Special Blend (Allen & Page)
EnergyEnergy
NutrientsNutrients
SeniorSenior
YeastYeast
Old Faithful’s Special Blend from Allen & Page is intended for senior horses, horses at rest, and horses in light to medium work. It contains mint, yeast, and garlic.
Orphan Foal Supplement (Dunstan)
FoalFoal
GrowthGrowth
NutrientsNutrients
ProteinProtein
Orphan Foal by Dunstan is a palatable, digestible feed intended for introducing foals to solid feed. It is a blend of milk powder, vegetable proteins, cereals, vitamins and minerals. It is intended to encourage the transition from milk to solid diet.
Paradox Organic Selenium Supplement (Probiotech)
AntioxidantAntioxidant
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Paradox by Probiotech is a granular organic selenium-enriched yeast supplement with added Vitamin E and Vitamin C. It also contains mannan oligosaccharides (MOS) and yucca schidigera.
Perfect Balance (Keyflow Feeds)
Easy KeeperEasy Keeper
ForageForage
IngredientIngredient
Low NSC FeedsLow NSC Feeds
Perfect Balance is designed for horses on forage-based diets. Perfect Balance is low NSC and can be fed to horses with a low energy requirement.
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 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 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 Plus 606 Pellets (Ace Hi Feeds)
Caloric EnergyCaloric Energy
NutritionNutrition
PerformancePerformance
ProteinProtein
Performance Plus 606 by Ace Hi Feeds is intended for horses with higher energy needs including growing and performance horses. It contains barley, wheat bran, and canola oil as energy sources.
Power & Performance (Allen & Page)
Competition HorsesCompetition Horses
EnergyEnergy
PerformancePerformance
StaminaStamina
Power & Performance from Allen & Page is intended for performance horses and ponies. Power & Performance is intended to provide slow-release energy.
Prebiotic + Probiotic Granular (Equine Choice)
DigestionDigestion
Gut HealthGut Health
PrebioticPrebiotic
ProbioticProbiotic
Equine Choice Prebiotics + Probiotics is a granular (powdered) supplement providing live encapsulated saccharomyces cerevisiae yeast, Bacillus bacteria, digestive enzymes and mannan-oligosaccharide (MOS). Available in a paste or in granular form.
Prebiotic and Probiotic Paste (Equine Choice)
PrebioticPrebiotic
ProbioticProbiotic
StressStress
YeastYeast
Prebiotic and Probiotic Paste from Equine Choice contains live encapsulated saccharomyces cerevisiae yeast. The concentrated paste can assist gut microflora during acute periods of digestive upsets.
Precision (Ark Nutrition)
Amino AcidAmino Acid
FatFat
GrowthGrowth
ToplineTopline
Precision by Ark Nutrition is a pelleted feed that is low in sugar with a moderate starch level meant to ease digestion and is higher in soluble fiber levels to support hindgut function.
Pro Feed Balancer (Blue Chip Feed)
BroodmareBroodmare
GrowthGrowth
Ration BalancerRation Balancer
StallionStallion
Pro Feed Balancer from Blue Chip Feed is a pelleted ration balancer designed to support hoof, coat, and gut health. This product is intended for performance horses, broodmares, stallions, and young stock.
Protek GI (Kelato)
DigestionDigestion
Gut HealthGut Health
HealthHealth
HindgutHindgut
Protek GI by Kelato is a supplement intended to support overall digestive health in horses.
Pulmo-Care (Probiotech)
HealthHealth
ImmunityImmunity
NutritionNutrition
RespiratoryRespiratory
Pulmo-Care from Probiotech is a respiratory supplement that is intended to assist with the moisture balance in the nose, throat, and lungs. It contains selenium and is meant to support the immune system.
Quiet Cubes (Allen & Page)
Easy KeeperEasy Keeper
ExerciseExercise
HerbHerb
NutrientsNutrients
Quiet Cubes from Allen & Page is intended for easy keepers and horses and ponies at rest or in light work. This feed contains added mint which is meant to increase palatability.
Quiet Mix (Allen & Page)
Easy KeeperEasy Keeper
ExerciseExercise
Gut HealthGut Health
NutrientsNutrients
Quiet Mix from Allen & Page is intended for horses and ponies at rest or in light work. This feed contains yeast which is meant to support overall gut health.
Racing Feed Balancer (TopSpec)
Competition HorsesCompetition Horses
NutritionNutrition
PerformancePerformance
Ration BalancerRation Balancer
Racing Feed Balancer from TopSpec is ideal for Racehorses at rest or in work and trotters. This ration balancer supports digestive efficiency, recovery, muscle development, hoof quality, and coat condition.
Ride & Relax (Allen & Page)
DigestionDigestion
Easy KeeperEasy Keeper
FiberFiber
NutritionNutrition
Ride & Relax from Allen & Page is a muesli mix with added mint for palatability. Ride & Relax contains added vitamins, minerals and probiotics. Ride & Relax is free from barely and molasses.
S-100 Sport & Leisure (Royal Horse)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
NutritionNutrition
ProbioticProbiotic
S-100 Sport & Leisure from Royal Horse is a pelleted feed that is formulated with additional probiotics. This feed is intended for horses and ponies in light to moderate work.
S-200 Sport & Leisure (Royal Horse)
Competition HorsesCompetition Horses
HealthHealth
NutritionNutrition
PrebioticPrebiotic
S-200 Sport & Leisure from Royal Horse is a pelleted feed intended for horses and ponies in moderate to heavy work. This feed is intended to support muscular activity with added Vitamin E.
S-250 Sport & Leisure (Royal Horse)
EnergyEnergy
MuscleMuscle
NutrientsNutrients
NutritionNutrition
S-250 Sport & Leisure from Royal Horse is textured feed intended for horses in light to moderate work. S-250 Sport & Leisure is an oat-free feed and contains 200 IU/kg of Vitamin E intended to support muscular activity.
S-350 Senior (Royal Horse)
Gut HealthGut Health
NutrientsNutrients
NutritionNutrition
SeniorSenior
S-350 Senior from Royal Horse is a textured feed intended for senior horses. S-350 Senior is intended to improve gastrointestinal health and support muscle maintenance in senior horses.
Sales Prep Mix (Dodson & Horrell)
FoalFoal
GrowthGrowth
MuscleMuscle
Weight IssuesWeight Issues
Sales Prep Mix by Dodson & Horrell is a feed meant to bring out your horse's best physical qualities. This feed is high in its oil content for coat shine, and quality offers a higher amount of biotin for hoof support and has an elevated level of protein to develop good muscling.
SecureGuard Gold (Arenus)
Gut HealthGut Health
HealthHealth
HindgutHindgut
NutritionNutrition
SecureGuard Gold from Arenus is a pelleted gut supplement for horses. SecureGuard Gold is intended for horses with chronic gut issues or poor body condition.

Is Your Horse's Diet Missing Anything?

Identify gaps in your horse's nutrition program to optimize their well-being.