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Bacillus subtilis - Feed Ingredient

Bacillus subtilis is a spore-forming, Gram-positive bacterium used as a direct-fed microbial (probiotic) in equine feed and supplements. It is valued for its ability to withstand extreme conditions, including high temperatures and low pH, making it a suitable probiotic for inclusion in pelleted or processed feeds. The spores of Bacillus subtilis can survive the upper gastrointestinal tract and germinate in the hindgut, where they may support microbial balance and digestive function.

As a probiotic, Bacillus subtilis may contribute to the modulation of the gut microbiome through competitive exclusion of pathogens, production of antimicrobial compounds, and secretion of enzymes that assist in nutrient breakdown. The bacterium is also known for its ability to produce extracellular enzymes such as proteases and amylases, which may contribute to feed digestibility.

The following equine feeds, supplements and products contain Bacillus subtilis as an ingredient.

Feeds, Supplements & Products
Sentinel Performance LS (Blue Seal)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
PerformancePerformance
SeniorSenior
Blue Seal Sentinel® Performance LS is an extruded feed providing a maximum of 14% NSC. It is intended for horses requiring a higher calorie diet, such as equine athletes and hard keepers.
Sentinel Safe Start SS (Blue Seal)
Complete FeedComplete Feed
FoalFoal
GrowthGrowth
LactationLactation
Sentinel Safe Start SS is an extruded complete feed formulated for broodmares and growing foals. It provides higher protein content (16%) to meet the increased demands of late gestation, early lactation, and developing foals.
Sentinel Senior SR (Blue Seal)
DentalDental
Feed EfficiencyFeed Efficiency
Ration BalancerRation Balancer
SeniorSenior
Sentinel Senior SR is an extruded feed for older horses and mature easy keepers. It is formulated to provide higher feed efficiency for senior horses with gut issues or poor teeth. The addition of bioavailable marine-sourced calcium supports gastric pH and health.
Sentinel Simply Lite (Blue Seal)
Easy KeeperEasy Keeper
Gut HealthGut Health
Metabolic SyndromeMetabolic Syndrome
ProbioticProbiotic
Sentinel Simply Lite from Blue Seal is a low-calorie pelleted feed intended for adult horses. Formulated for easy keepers, Sentinel Simply Lite provides lower fat and protein content with 16.2% NSC.
Sentinel XT Grow (Blue Seal)
FiberFiber
FoalFoal
GrowthGrowth
LactationLactation
Sentinel® XT™ Grow is a textured horse feed intended for growing foals and lactating mares. It provides 10% fat and 16% protein with primary ingredients including soybean hulls, beet pulp and alfalfa meal.
Sentinel XT Pro (Blue Seal)
GrowthGrowth
NutrientsNutrients
PerformancePerformance
SeniorSenior
Sentinel XT Pro by Blue Seal is a textured feed intended for growing horses, performance horses, gestating mares, breeding horses and senior horses.
Sentinel XT Show (Blue Seal)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
ExerciseExercise
Weight IssuesWeight Issues
Sentinel® XT™ Show is a textured feed intended for active adult horses and competition horses with higher nutrient requirements. It provides a higher fat content (12%) and digestible fibre sources including soybean hulls, beet pulp and alfalfa meal.
Showman (ProElite)
Complete FeedComplete Feed
Low NSC FeedsLow NSC Feeds
MuscleMuscle
PerformancePerformance
ProElite by Showman is a pelleted, extruded feed intended for mature horses in moderate to intense work. It is intended to be a low glycemic feed for supporting muscle strength.
SmartGut Pellets (SmartPak)
DigestionDigestion
Gut HealthGut Health
ProbioticProbiotic
UlcersUlcers
SmartGut Pellets is a gut supplement intended to neutralize gastric acid and maintain optimal stomach health. This supplement provides prebiotics, probiotics, and soluble fibre to support a healthy stomach lining.
SmartGut Ultra Pellets (SmartPak)
Gut HealthGut Health
HindgutHindgut
ImmunityImmunity
NutrientsNutrients
SmartGut Ultra Pellets from Smart Pak is a pelleted gut supplement. SmartGut Ultra Pellets are intended for horses with occasional gastric problems. This supplement is formulated with slippery elm intended to soothe the gastrointestinal tract in horses.
SmartPerform Ultra Pellets (SmartPak)
DigestionDigestion
Gut HealthGut Health
ImmunityImmunity
JointsJoints
SmartPerform Ultra Pellets from SmartPak is a pelleted equine supplement intended to support joint and gut health. SmartPerform Ultra Pellets is formulated with turmeric, resveratrol, glucosamine and chondroitin sulphate which are intended to support gut and joint health in horses.
Snack Horse Treats (DAC)
Caloric EnergyCaloric Energy
EnergyEnergy
FatFat
NutrientsNutrients
Snack Horse Treats by DAC are supplemental molasses- and oat-based horse treats. They can be used for training, as rewards, or simply as an everyday treat. However, they should be fed in moderation.
Sport Horse Grass (Uckele)
Mineral BalanceMineral Balance
NutritionNutrition
Ration BalancerRation Balancer
VitaminsVitamins
Sport Horse Grass is a pelleted vitamin, mineral, and amino acid supplement intended for performance horses consuming a grass-based diet. This supplement is intended to support muscular function, joint/tendon maintenance, and recovery.
Starch Wise (ProElite)
Gut HealthGut Health
NutritionNutrition
PerformancePerformance
SeniorSenior
ProElite Starch Wise is a pelleted horse feed with a maximum 14.5% NSC. It is formulated with moderate levels of starch and sugar for mature show and performance horses.
Stress Free Forage (Triple Crown)
DigestionDigestion
FiberFiber
ForageForage
NutritionNutrition
Stress Free Forage by Triple Crown is intended for performance and underweight horses. It is ideal for horses that have ulcers, leaky gut syndrome, and horses stressed by trailering.
Strucomix Senior (Cavalor)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
SeniorSenior
Strucomix Senior by Cavalor is a high-fibre feed formulated with puffed and extruded grains to improve digestibility. It contains 14% protein that help support weight and muscle maintenance.
SU-PER Form Pellets (Gateway Products)
HealthHealth
Mineral BalanceMineral Balance
ProbioticProbiotic
VitaminsVitamins
SU-PER Form Pellets by Gateway Products is a vitamin and mineral supplement that provides all the necessary nutrients. This supplement also includes additional amino acids and electrolytes and is meant for horses of all life stages.
SU-PER Gain Weight (Gateway Products)
Amino AcidAmino Acid
Feed EfficiencyFeed Efficiency
MuscleMuscle
Weight IssuesWeight Issues
SU-PER Gain Weight by Gateway Products is a weight-gaining product designed for hard keepers. It contains coconut oil as its fat source, the essential amino acids for muscle retention, and probiotics to aid in nutrient absorption.
SU-PER Pro-Maxx Powder (Gateway Products)
Gut HealthGut Health
HindgutHindgut
ImmunityImmunity
ProbioticProbiotic
SU-PER Pro-Maxx Powder by Gateway Products is a gut supplement that provides a blend of probiotics to provide healthy bacteria to the digestive tract. This supplement can help maintain proper gut health and microbial balance.
Sunshine Plus Pelleted Horse Feed (Blue Seal)
Complete FeedComplete Feed
ProteinProtein
VitaminsVitamins
YeastYeast
Sunshine Plus is a high protein (30%) pelleted feed containing soybean meal and whey. Energy sources include cane molasses, wheat middlings, oil, and corn distillers grains.
Super Horse 12-12 (Manna Pro)
BroodmareBroodmare
Complete FeedComplete Feed
NutritionNutrition
PerformancePerformance
Super Horse 12-12 from Manna Pro is a textured sweet feed formulated for performance horses, broodmares, and stallions. Super Horse 12-12 contains 12% crude protein, 6% crude fat, and 7% crude fiber.
Super Horse Manna Senior (Manna Pro)
DentalDental
NutritionNutrition
SeniorSenior
Weight IssuesWeight Issues
Super Horse Manna Senior from Manna Pro is a beet pulp-based feed designed for senior horses. It contains 12.5% crude protein, 4% crude fat, 18% dietary starch, 7% sugars, and a mix of organic and inorganic trace minerals.
Super Horse Performance 10 (Manna Pro)
ExerciseExercise
GrainsGrains
NutritionNutrition
PerformancePerformance
Super Horse Performance 10 from Manna Pro is available as a pellet or a textured feed. Super Horse Performance 10 contains 10% crude protein, 6% crude fat, 7% crude fibre, and uses a mix of organic and inorganic trace minerals.
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.
Sweet ‘N Safe (Daily Dose Equine)
Caloric EnergyCaloric Energy
FatFat
FlavorFlavor
GrainsGrains
Sweet 'N Safe by Daily Dose Equine is a textured feed for the average horse needing a higher caloric intake. It contains energy sources such as roasted whole oats, roasted whole barley, and roasted whole soybeans.
Synergize (Tribute)
FatFat
Gut HealthGut Health
Low NSC FeedsLow NSC Feeds
PerformancePerformance
Synergize by Tribute is a pelleted feed intended for hard-keepers and horses with a heavy workload that are sensitive to sugar and starch.
Top Breeder (McCauley’s Equine Formulas)
Coat QualityCoat Quality
ExerciseExercise
FatFat
FoalFoal
Top Breeder is a pelleted horse feed containing high levels of beet pulp and vegetable oil. It is formulated to improve body condition in breeding and performance horses.
Topline Advantage (ProElite)
DigestionDigestion
NutritionNutrition
ProteinProtein
ToplineTopline
ProElite Topline Advantage is a pelleted horse supplement that provides essential nutrients and amino acids for muscle development. It contains 50% crude protein.
Total Performance (DAC)
HealthHealth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Total Performance by DAC is a vitamin and mineral supplement designed for mature performance horses. It is formulated with trace minerals, amino acids and probiotics.
Tough To Beet® (Tribute Equine)
EnergyEnergy
FatFat
FiberFiber
PerformancePerformance
Tough To Beet® is a high-fat textured feed formulated with shredded beet pulp, grains and soybean oil. This feed targets mature horses in training to meet their calorie needs.
Tradition Mix (Cavalor)
DigestionDigestion
HealthHealth
NutrientsNutrients
NutritionNutrition
Tradition Mix by Cavalor is a textured feed intended for horses at maintenance or light work.
Training Formula (Triple Crown) – [Discontinued]
EnergyEnergy
ExerciseExercise
FatFat
PerformancePerformance
Triple Crown Training Formula is now a discontinued feed which was a high-calorie, high-fat feed designed to meet the energy requirements of exercising horses. Energy sources included oats, molasses, soybeans, beet pulp, alfalfa and wheat middlings.
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.
Triple Play (Equi-lete)
Gut HealthGut Health
HealthHealth
PerformancePerformance
Weight IssuesWeight Issues
Triple Play by Equi-lete is a vitamin and mineral supplement intended to support gastric health, performance and body condition in hard keepers, performance horses and breeding stock.
U-Balance Foundation (Uckele)
FiberFiber
Mineral BalanceMineral Balance
ProteinProtein
VitaminsVitamins
Uckele U-Balance Foundation is a pelleted vitamin, mineral, and amino acid supplement for horses. It is intended to balance the diet without adding significant calories. This supplement can also supports sugar metabolism.
Ultra Complete (Tribute)
EnergyEnergy
FatFat
PerformancePerformance
Weight IssuesWeight Issues
Ultra Complete is a high-fat and fibre textured feed formulated for adult horses in heavy work, such as racehorses in training. It is made with beet pulp, molasses, whole oats and soybeans.
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.
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.
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.
Weight Booster (DuMor)
Caloric EnergyCaloric Energy
FatFat
Omega 3-6-9Omega 3-6-9
Weight IssuesWeight Issues
Weight Booster by DuMor is a high caloric supplement formulated to provide extra calories required for body condition and equine performance.
Weight Booster High-Calorie Supplement (Agrimaster)
Caloric EnergyCaloric Energy
FatFat
NutrientsNutrients
Weight IssuesWeight Issues
Weight Booster High-Calorie Supplement by Agrimaster is a high-calorie supplement intended to support weight gain and coat condition in all classes of horses.
Weight-Up (AniMed)
DigestionDigestion
FatFat
Weight IssuesWeight Issues
YeastYeast
Weight-Up from AniMed is a supplement meant to help horses gain weight, and maintain an optimal weight. It contains calories and fat while also supporting a healthy digestive system. It also has yeast included.
Wholegain (Cavalor)
Coat QualityCoat Quality
EnergyEnergy
Ration BalancerRation Balancer
Weight IssuesWeight Issues
Cavalor's Wholegain is a balancer that is meant to provide cool energy, weight gain, and coat support. It contains vitamins, minerals, and omegas 3 and 6.
Wholesome Blends Balancer (Tribute)
Gut HealthGut Health
HealthHealth
Low NSC FeedsLow NSC Feeds
Ration BalancerRation Balancer
Wholesome Blends Balancer is a soy-free ration balancer with 28% protein, 5% fat and less than 15% NSC. It is formulated with canola, flax, alfalfa, and sunflower meals as well as split peas for protein.
Wholesome Blends Performance (Tribute)
Complete FeedComplete Feed
EnergyEnergy
FatFat
PerformancePerformance
Wholesome Blend Performance is a performance horse feed with higher levels of fat and protein. It is a textured feed using a variety of energy, fat and protein sources, both alternative and conventional.
Wholesome Blends Senior (Tribute)
Complete FeedComplete Feed
DigestionDigestion
FiberFiber
SeniorSenior
Wholesome Blends Senior is a soy-free high-fat and high-fiber textured complete feed for senior horses. It contains beet pulp, alfalfa meal, flaxseed meal, split peas, and canola oil.
Yucca 5 Way PAC (DAC)
HealthHealth
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
YeastYeast
Yucca 5 Way PAC by DAC is a powdered supplement designed for all classes of mature horses. It contains added trace minerals and Yucca schidigera extract.
Yucca Saponin (Uckele)
Bone HealthBone Health
HealthHealth
JointsJoints
PerformancePerformance
Yucca Saponin from Uckele is a joint supplement in a powdered form. It is meant to provide ligament, bone, and tendon support. It also provides the overall health and structural function of joints.

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