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Identify gaps in your horse's nutrition program to optimize their well-being.
Calcium Carbonate - Feed Ingredient
Calcium Carbonate (CaCO3) is a mineral compound derived from limestone, chalk, or marble. It is used in equine diets to supply calcium, which is essential for bone formation, muscle function, and metabolic processes.
While Calcium Carbonate is an economical supplement, its inclusion in feed formulations must be carefully balanced with other minerals, particularly phosphorus, to maintain an optimal calcium-to-phosphorus ratio. An imbalance can lead to metabolic issues and affect bone mineralization in growing horses.
The following equine feeds, supplements and products contain Calcium Carbonate as an ingredient.
Feeds, Supplements & Products
AminoTrace+ Vitamin and Mineral Supplement (Mad Barn)
Hoof Health
Metabolic Syndrome
Organic Trace Minerals
VitaminsAminoTrace+ 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.
Omneity P – Pellets – Vitamin & Mineral Supplement (Mad Barn)
Gut HealthHoof Health
Mineral BalanceOrganic Trace Minerals
Ration BalancerOmneity 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 HealthMineral BalanceOrganic Trace MineralsVitaminsOmneity 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)
Digestion
Feed EfficiencyGut Health
ProbioticOptimum 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 Quality
ExerciseHoof HealthOrganic Trace MineralsTrace 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)
DigestionGut Health
ImmunityProbiotic
Ulcers
YeastVisceral+ 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.
Oat Balancer (Dodson & Horrell)
Amino Acid
MareRation Balancer
StallionOat Balancer by Dodson & Horrell is a ration balancer meant to be fed supplementally with oats. It provides a higher level of vitamin E to support milk quality and fertility.
Oat Balancer Concentrate (Red Mills)
Complete Feed
Growth
PerformanceStallionOat Balancer Concentrate from Red Mills is a feed intended for young stock, breeding stock, and racehorses. This pelleted feed is designed to support performance, recovery, coat condition, and growth.
Oat Balancer Cooked Mix (Red Mills)
Broodmare
Competition HorsesPerformanceStallionOat Balancer Cooked Mix from Red Mills is a feed intended for youngstock, racehorses, and breeding stock. This feed is designed to support performance, recovery, growth, bone integrity, and coat condition.
Oat Balancer Cube (Bluegrass Horse Feed)
BroodmarePerformance
ProteinStallionOat Balancer Cube is a pelleted ration balancer for horses and ponies in moderate to heavy work. It is intended to be fed alongside oats and other cereals. It contains 24% protein, 3.3% fat, and 8% fibre.
Oat Balancer Mix (Baileys Horse Feeds)
Caloric Energy
GrainsRation BalancerVitaminsOat Balancer Mix from Baileys Horse Feeds is intended for racehorses being fed a high oat diet in heavy work. This textured, high-energy feed is formulated to be fed alongside oats to counteract nutrient deficiencies that may come as a cause of feeding only oats.
Oat Balancer Mix (Bluegrass Horse Feed)
BroodmareProteinRation BalancerStallionOat Balancer Mix is a nutrient-dense balancer fed alongside oats and other cereals. It is designed for horses and ponies in moderate to heavy work, stallions, broodmares, and growing horses.
Oat Base (No Corn) (Ace Hi Feeds)
Caloric Energy
FlavorGrains
NutrientsOat Base by Ace Hi Feeds is a corn-free, textured equine feed. It contains added vitamins and a blend of organic and inorganic minerals. This textured feed is intended for all horses and ponies.
Oat Free Muesli (Krafft)
DigestionGut Health
NutritionProteinOat Free Muesli by Krafft is a oat free supplementary feed intended for horses and ponies in light to moderate work. It contains 10% protein, 3% fat, and 10% fibre.
Oatena (Purina)
Caloric EnergyExercise
HealthNutrientsPurina Oatena is a textured feed intended for active pleasure horses in boarding stables and riding schools. It supplies moderate protein (13%) and low fat (4%) from ingredients such as whole oats, flaked barley, wheat, soy hulls, and soybean oil.
OBS Easy 10 (Ocala Breeders’ Feed and Supply)
Easy Keeper
FiberNutrition
Weight IssuesOBS Easy 10 by Ocala Breeder’s Supply (OBS) is a complete pelleted feed intended for easy-keepers and horses at maintenance. It provides lower protein (10%) and fat (3.5%) content and is composed of corn, oats, wheat middlings, soybean hulls, alfalfa meal and molasses.
OBS Generation (Ocala Breeders’ Feed and Supply)
FatMineral BalanceProteinVitaminsOBS Generation is a complete pelleted feed formulated for horses at maintenance. It is made with wheat middlings, oats and corn, and provides 14% protein and 6% fat.
OBS Gest-O-Lac (Ocala Breeders Feed & Supply)
Broodmare
FoalGrowth
LactationOBS Gest O Lac is a textured horse feed for broodmares in late gestation, lactating mares, and foals. It contains high protein and fat content to support growth and lactation. Yeast culture is added to help support gut health.
OBS Hi-Amo Plus (Ocala Breeders Feed & Supply)
Amino AcidExerciseGrowthLactationOBS Hi-Amo Plus is a textured concentrate feed designed to support growth and reproductive function. It contains added lysine, digestible fibre sources, and selenium yeast.
OBS Mane 10 (Ocala Breeders’ Feed and Supply)
Easy KeeperFiberMineral BalanceVitaminsOBS Mane 10 is a complete textured feed intended for easy-keepers and pleasure horses. It contains 10% protein and 3.5% fat and contains oats, corn and wheat middlings.
OBS Pellet Plus (Ocala Breeders Feed & Supply)
ExerciseFoalGrowthLactationOBS Pellet Plus is a pelleted horse feed with added lysine for horses in training, broodmares, and growing horses. Pellet Plus contains vegetable oil as a source of energy and selenium yeast to support immune and reproductive function.
OBS Performance Blend (Ocala Breeders Feed & Supply)
Caloric EnergyComplete FeedCompetition HorsesWeight IssuesOBS Performance Blend is a textured horse feed targeted to yearlings and horses in heavy training or that require improvement in condition. It provides a higher energy density and fat content to support weight management.
OBS Professional Blend (Ocala Breeders Supply)
Competition HorsesExerciseFatPerformanceOBS Professional Blend is a complete textured feed intended for high-performance horses. It is formulated with oats, corn and beet pulp and contains 10% fat.
OBS Racing Blend (Ocala Breeders Feed & Supply)
Caloric EnergyCompetition HorsesExercisePerformanceOBS Racing Blend is a horse feed formulated for racehorses. Racing Blend provides a higher energy density to meet the needs of horses in heavy training. This feed contains beet pulp and steam-crimped oats.
OBS Radiant Supplement (Ocala Breeders’ Feed and Supply)
Caloric EnergyFatPerformanceWeight IssuesOBS Radiant Supplement is targeted to performance horses requiring additional calories. It contains 22% fat and 18% protein and consists of rice bran, wheat middlings, soybeans and flaxseed.
OBS Sport Feed (Ocala Breeders’ Feed and Supply)
Amino AcidCaloric EnergyExercisePerformanceOBS Sport Feed is a complete feed intended for performance horses. It is formulated with wheat middlings, soybean hulls and alfalfa meal. It contains 13% protein and 10% fat.
OCD Pellets (Doc’s Products)
Bone HealthGrowthHealth
JointsOCD Pellets by Doc's Products is a bone and joint supplement intended for horses. It supplies 900 mg of silicon and 50 mg of hyaluronic acid in each 28 g serving.
Oilovite (NAF Equine)
Coat QualityHealthMineral BalanceVitaminsOilovite from NAF Equine is intended for all horses and ponies. This supplement is meant to provide vitamins and minerals to support overall health. Oilovite also contains soya, linseed, and hemp oil.
Old Faithful’s Special Blend (Allen & Page)
EnergyNutrients
SeniorYeastOld 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.
Old Horse (Dunstan)
Fiber
Low NSC FeedsMetabolic SyndromeNutrientsOld Horse by Dunstan is a high fibre feed intended for older horses at increased risk of metabolic disorders.
Oleo Special (Purina)
Complete FeedDigestionFat
HindgutPurina Oleo Special is an oiled textured feed for pleasure or performance horse that are housed in boarding stables. It provides 7% fat with ~22% NSC.
Oligosacc (Nature Belisle)
DigestionFeed EfficiencyGut Health
PrebioticOligosacc is a digestive supplement containing prebiotic oligosaccharides. It is used for calves to decrease the incidence of diarrhea and respiratory illness.
Olsen’s All Stock Sweet Textured (Olsen’s Grain)
Easy KeeperGrainsNutrientsNutritionOlsen's All Stock Sweet Textured from Olsen's Grain is a textured sweet feed intended for horses and ponies at maintenance. This feed contains 12% protein, 2% fat, and 10% fiber.
Omega Advantage (ProElite)
FatGrowth
Omega 3-6-9PerformanceProElite Omega Advantage is an extruded horse supplement providing 24% fat with added flax. It is intended to provide extra calories and aid in weight gain.
Omega Bran (McCauley’s)
FatHoof HealthMineral BalanceVitaminsOmega Bran by McCauley's is a high fat (27.8%) supplement containing vitamins and minerals, it is intended for all horses.
Omega GLO (Thomas Moore Feed)
EnergyFatHealthWeight IssuesOmega GLO from Thomas Moore Feed is a fat supplement for horses. It is stabilized bran meant to assist with conditioning or weight gain, providing energy, and is intended for hard keepers.
Omega Horseshine (Omega Fields)
Coat QualityFatHoof HealthJointsOmega Horseshine is a stabilized flaxseed, yeast and vitamin-mineral supplement for horses. Flaxseed provides omega-3 fatty acids and can increase the lustre of a coat.
Omega Horseshine COMPLETE (Omega Fields)
FatHoof HealthMineral Balance
Skin + HairOmega Horseshine COMPLETE is an omega-3 fatty acid and vitamin-mineral supplement for horses. It is formulated with flaxseed as a source of alpha-linolenic acid, yeast, vitamins and minerals.
Omega Match Ration Balancing Horse Feed (Purina)
EnergyFatFiberProteinPurina Omega Match Ration Balancer is a pelleted feed intended for horses at any activity level and life stage. It is designed to fill nutrient gaps from forage or unfortified grains.
OMG (Dove Performance Nutrition)
Mineral BalanceNutrientsRation BalancerVitaminsOMG from Dove Performance Nutrition is a pelleted feed ration for horses. It contains vitamins, minerals, protein, fiber and fat.
Omolene #300® Growth Concentrate (Purina Mills)
BroodmareComplete FeedFoalLactationOmolene 300 Growth is a textured feed designed for foals, weanlings, yearlings and mares in gestation or lactation. It contains 16% crude protein, 6% crude fat and 7% fibre.
Omolene 200 Performance RT (Purina)
BroodmareComplete FeedCompetition HorsesGrowthPurina® Omolene® #200 RT is a textured feed intended for performance horses, providing 6% fat and 14% fibre. Energy sources include whole grains and a soy oil-molasses blend.
Omolene 400 Complete Advantage (Purina)
DigestionExerciseGut HealthUlcersPurina® Omolene® #400 Complete Advantage is a textured complete feed intended for active pleasure and senior horses. It contains beet pulp shreds, vegetable oils, and a soy oil-molasses blend to improve palatability.
Omolene 400 Complete Advantage RT (Purina)
DigestionExerciseGut HealthUlcersPurina® Omolene® 400 Complete Advantage RT is a textured feed intended for performance horses. It is a calorie-dense blend of 8% fat, 16% fibre and grains.
Omolene 500 Competition (Purina)
Competition HorsesDigestionEnergyNutritionOmolene #500® Competition is a textured feed intended for performance and endurance athletes and horses in heavy work. It provides a higher energy density with 8% fat.
Omolene Maternity 300 (Purina Canada)
BroodmareFoalGrowthLactationPurina Omolene Maternity 300 is a textured horse feed intended for broodmares, nursing and growing foals. It provides higher amino acid content to support growth and development.
Omolene Progression 200 (Purina)
BroodmareComplete FeedPerformanceStallionOmolene Progression 200 is a textured feed intended for performance horses, growing horses and gestating mares. It supplies 14% protein and 7% fat from ingredient sources including soybean meal, soybean oil, whole oats, flaked barley and extruded corn.
Omolene Senior Action (Purina)
ExercisePerformanceRation BalancerSeniorOmolene Senior Action is a complete textured feed formulated for active senior horses. It provides 14% protein, which may support muscle tone in senior horses that are not receiving enough protein from their forage.
Omolene Sport Plus (Purina)
Complete FeedCompetition HorsesExercisePerformancePurina Omolene Sport Plus is a textured complete feed intended for horses in heavy work including racehorses. It provides 8% fat from vegetable oils and contains beet pulp as a high pectin fibre source.
Omolene® #100 Active Pleasure Horse Feed (Purina Mills)
Caloric EnergyComplete FeedExerciseGut HealthOmolene 100 Active Pleasure Horse Feed is a textured feed targeted to horses in maintenance to moderate work. It provides 10% crude protein, 10% fibre and 4.5% fat.
Omolene® #200 Performance Horse Feed (Purina Mills)
Complete FeedExerciseGut HealthPerformanceOmolene 200 Performance Horse Feed is a textured feed targeted to performance horses, broodmares in gestation and lactation, and breeding stallions. It contains added fat, carbohydrates, and molasses to support high caloric needs.
Omolene® #400 Complete Advantage (Purina Mills)
Complete FeedExerciseFiberSeniorOmolene 400 Complete Advantage is a textured horse feed for active and senior horses. It contains highly digestible fibre from beet pulp and fat from vegetable oils, flax seed and rice bran.
One’N Only (Wendlands)
Caloric EnergyComplete FeedHealthNutritionOne'N Only by Wendlands is a total mixed ration formulated to replace traditional concentrates and supplements. It can also be fed as a hay extender to help meet forage needs.
OneCup for Horses (GWF Nutrition)
Easy KeeperMineral BalanceRation BalancerVitaminsOneCup for Horses by GWF Nutrition is a pelleted ration balancer that intends to provide the vitamins and minerals necessary to maintain an easy-keeper. It contains 22 vitamins and minerals.
Opti-Ferm Horse Tub (ClariFly) (Kalmbach Feeds)
Caloric EnergyHealthNutritionSkin + HairOpti-Ferm Horse Tub with Clarifly by Kalmbach Feeds is an energy, vitamin and mineral supplement lick. It contains Diflubenzuron, which reduces the emergence of flies from manure.
Opti-Ferm Horse Tubs (Kalmbach Feeds)
Caloric EnergyFlavorMineral BalanceNutritionOpti-Ferm Horse Tub by Kalmbach Feeds is an energy, vitamin, and mineral supplement lick. It contains added molasses and fat for palatability and 10 mg/lb of added biotin for hoof health.
