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Phosphorus - Feed Ingredient

Phosphorus is an essential macromineral required for numerous physiological functions in horses, including energy metabolism, bone formation, and cellular signaling. It is a component of adenosine triphosphate (ATP), nucleic acids, and phospholipids, and works in close association with calcium to support skeletal health. In the equine body, approximately 80% of total phosphorus is stored in the bones and teeth.

Dietary phosphorus is supplied through both natural feed ingredients and inorganic mineral sources. Common feed-based sources include cereal grains and their byproducts (such as bran), which contain phosphorus largely in the form of phytate—a form that is poorly bioavailable to horses. Inorganic phosphorus sources, such as monosodium phosphate or dicalcium phosphate, are often added to balanced rations to meet specific nutrient requirements and improve bioavailability.

The calcium-to-phosphorus ratio is a critical consideration in equine diets. An ideal ratio typically ranges from 1.2:1 to 2:1, depending on the horse’s age and physiological status. Excessive phosphorus intake, especially when calcium is deficient, can interfere with calcium absorption and contribute to conditions such as nutritional secondary hyperparathyroidism. Therefore, phosphorus levels must be carefully balanced within the overall mineral profile of the diet.

The following equine feeds, supplements and products contain Phosphorus 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.
Monosodium Phosphate (Mad Barn)
Bone HealthBone Health
GrowthGrowth
IngredientIngredient
Mineral BalanceMineral Balance
Monosodium Phosphate is a highly bioavailable source of phosphorus commonly used as an equine supplement. Phosphorus is considered an important component for metabolic function. Adult horses require 17 grams of phsophours a day.
Hoof Organic (Advanced Biological Concepts)
HealthHealth
Hoof HealthHoof Health
ImmunityImmunity
VitaminsVitamins
Hoof Organic from Advanced Biological Concepts is a pelleted hoof supplement for horses. Hoof Organic is fortified with trace minerals and biotin intended for hoof growth.
Hoof Pro Plus (Excel Equine)
HealthHealth
Hoof HealthHoof Health
NutrientsNutrients
RecoveryRecovery
Hoof Pro Plus by Excel Equine is a pelleted hoof supplement formulated to support normal hoof growth and overall hoof quality. It contains biotin, methionine, calcium, and zinc.
Hoof-N-Sole (Iron Horse)
Coat QualityCoat Quality
HealthHealth
Hoof HealthHoof Health
ImmunityImmunity
Hoof-N-Sole from Iron Horse is a pelleted supplement intended to maximize hoof growth. This supplement contains essential amino acids, trace vitamins and minerals intended to improve coat health.
Hooflex (Absorbine)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
PrebioticPrebiotic
Hooflex is a supplement from Absorbine that aims to support hoof health and strength. It contains minerals, prebiotics, and omega 3s.
Horse & Pony Cubes (Bluegrass Horse Feed)
CalmingCalming
ExerciseExercise
HealthHealth
VitaminsVitamins
Horse and Pony Cubes are an oat-free pelleted feed. It is intended for horses and ponies of all ages and in light to moderate work. It contains 10% protein, 2.4% fat, and 15.7% fibre.
Horse & Pony Mix (Bluegrass Horse Feed)
CalmingCalming
DigestionDigestion
ExerciseExercise
HealthHealth
Horse and Pony Mix is an oat-free and micronized feed. It is ideal for horses and ponies of all ages and in light to moderate work. It contains 10% protein, 4.5% fat, and 7% fibre.
Horse and Pony Cooling Cubes (Saracen Horse Feeds)
EnergyEnergy
FiberFiber
NutritionNutrition
ProteinProtein
Saracen Horse and Pony Cooling Cubes is a low-energy pelleted feed formulated for idle horses or horses in light work. Ideal for horses with sensitivities to cereal grains.
Horse Mineral (Hoffman’s Horse Products)
DigestionDigestion
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Hoffman's Horse Mineral is an equine mineral and vitamin supplement primarily intended for free-choice feeding large herds. It does not contain sugars, grains, or added starches.
Horse Mineral (Pegasus)
HealthHealth
Mineral BalanceMineral Balance
Organic Trace MineralsOrganic Trace Minerals
VitaminsVitamins
Horse Mineral from Pegasus is intended for all horses and ponies. This supplement is meant to balance forage-based diets. It contains chelated minerals, vitamins, and organic selenium.
Horse Plus (Thrive Essential)
Mineral BalanceMineral Balance
PrebioticPrebiotic
ProbioticProbiotic
ProteinProtein
Horse Plus by Thrive Essential is a powdered daily vitamin and mineral supplement intended for all classes of horses. It is high in protein, and contains pre- and probiotics although the concentration is not disclosed.
Horse Power (Lakeland Feeds)
FiberFiber
HealthHealth
NutrientsNutrients
NutritionNutrition
Horse Power from Lakeland Feeds is a pelleted equine feed formulated with flax and rice bran. Horse Power is intended to aid in joint, hoof and coat health in horses of various life stages and work levels.
Horse Tub (Agassiz Feeds)
HealthHealth
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
Horse Tub by Agassiz Feeds is a molasses-based protein, energy, mineral, and vitamin lick. It is designed for free-choice use and contains a minimum of 14% crude protein.
Horse-Manna Performance Supplement (Manna Pro)
Caloric EnergyCaloric Energy
DigestionDigestion
PerformancePerformance
ProteinProtein
Horse-Manna Performance Supplement is intended to supplement energy and protein in an equine ration. It contains soybean meal, corn, hominy, oatmeal, whey, and linseed meal.
Horse-Manna Vitality Supplement (Manna Pro)
Coat QualityCoat Quality
FatFat
ProteinProtein
YeastYeast
Horse-Manna Vitality Supplement contains soybean meal, flaxseed, whey, and alfalfa meal to add protein to the equine ration. It also provides some minerals and vitamins.
Horseshoer’s Secret Extra Strength (Farnam)
Hoof HealthHoof Health
Mineral BalanceMineral Balance
NutrientsNutrients
Organic Trace MineralsOrganic Trace Minerals
Horseshoer's Secret Extra Strength is an equine supplement intended to support hoof and connective tissue. It contains amino acids, minerals, biotin, yeast and other ingredients.
Hydraid (Natural Horse Vet)
ElectrolyteElectrolyte
HydrationHydration
RecoveryRecovery
StaminaStamina
Hydraid by Natural Horse Vet is a powdered supplement intended for performance horses to supply the electrolytes lost during competition. It contains dicalcium phosphate, calcium carbonate, and crushed mineral rock salt.
Improver Conditioning Cubes (Hilight)
Coat QualityCoat Quality
NutritionNutrition
ToplineTopline
Weight IssuesWeight Issues
Improver Conditioning Cubes from Hilight are intended to promote weight gain in horses. Improver Conditioning Cubes contain 12% crude protein and 10% crude fibre. This feed is intended to improve top-line and coat quality.
Improver Conditioning Mix (Hilight)
HealthHealth
ImmunityImmunity
NutritionNutrition
Weight IssuesWeight Issues
Improver Conditioning Mix from Hilight is intended to provide horses with additional calories who may require additional body condition. This feed contains 5.5% fat and 13% crude protein.
Inspire Marathon (Blue Seal)
EnergyEnergy
FatFat
PerformancePerformance
StaminaStamina
Inspire Marathon is a textured feed intended for horses requiring a high-calorie diet, such as hard keepers. This energy-dense formula contains 12% fat and ingredients such as oats and vegetable oil.
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.
IR Support (Earth Song Ranch)
DigestionDigestion
Gut HealthGut Health
HealthHealth
NutrientsNutrients
IR Support by Earth Song Ranch is a custom blend supplement intended to support horses on grass or mixed hay diets.
Joint Armor (Kentucky Performance Products)
Bone HealthBone Health
HealthHealth
ImmunityImmunity
JointsJoints
Joint Armor from Kentucky Performance Products is a powdered joint supplement for horses. Joint Armor contains glucosamine, chondroitin sulphate and hyaluronic acid intended to support joint health in horses.
Joint Combo Hoof & Coat (Horse Health Products)
Coat QualityCoat Quality
HealthHealth
Hoof HealthHoof Health
JointsJoints
Joint Combo Hoof & Coat from Horse Health Products is a pelleted 3-in-1 supplement. This supplement contains ingredients intended to support joint, hoof and coat health.
Jump Start (Doctor’s Choice Supplements)
BroodmareBroodmare
FoalFoal
GrowthGrowth
Ration BalancerRation Balancer
Jump Start is an organic ration balancer formulated for breeding stock, growing horses, and mature horses. It is also designed for performance horses or horses in heavy work.
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.
JuniorGLO Horse Pellet (ADM Animal Nutrition)
Bone HealthBone Health
FoalFoal
GrowthGrowth
ProteinProtein
JuniorGLO is a concentrated feed designed for foals, growing horses, and broodmares intended for feeding alongside a good-quality forage. It contains ingredients to support gut health, bone growth, and muscle development.
Just Add Oats (Natural Horse Vet)
Mineral BalanceMineral Balance
NutritionNutrition
ProbioticProbiotic
VitaminsVitamins
Just Add Oats by Natural Horse Vet is a powdered supplement intended to provide the vitamins and minerals to complete grain mixes and help balance out mixed grass, legume and grass hay.
Kalm N’ Fit (Tribute Equine)
Complete FeedComplete Feed
DigestionDigestion
FatFat
FiberFiber
Kalm 'N Fit® is a corn-free, high-fat, textured feed for exercising mature horses. It is formulated for horses consuming lower protein forages and contains steam-crimped grains to improve digestibility.
Kalm Performer (Tribute Equine)
EnergyEnergy
PerformancePerformance
ProteinProtein
Weight IssuesWeight Issues
Kalm Performer® is a corn-free, high-fat, textured feed with 24% NSC targeted to mature performance horses. It is formulated for horses consuming higher protein forages such as alfalfa hay.
Kalm Performer GC Plus (Tribute)
Complete FeedComplete Feed
JointsJoints
PerformancePerformance
RespiratoryRespiratory
Tribute Kalm Performer is a pelleted complete feed intended for mature horses on high protein forages like alfalfa hay. It is a corn-free formula with steam-crimped grains to support digestibility. It provides 24% NSC.
Keep Calm (Baileys Horse Feeds)
CalmingCalming
Caloric EnergyCaloric Energy
ExerciseExercise
FiberFiber
Baileys Horse Feeds Keep Calm feed is intended for horses and ponies in rest to moderate work that needs to maintain condition. This pelleted feed contains 7% starch and 4.5% sugar, making it ideal for horses and ponies prone to laminitis.
KelatoVIT Performance Pellet (Kelato)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
KelatoVIT Performance Pellet from Kelato is a vitamin and mineral pelleted supplement that also can be found in powdered form. Vitamins and minerals assist in performance, recovery, and overall health.
KelatoVIT Performance Powder (Kelato)
HealthHealth
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
KelatoVIT Performance Powder from Kelato is a vitamin and mineral supplement that also can be found in pelleted form. Vitamins and minerals assist in performance, recovery, and overall health.
Level Out (Excel Equine Feeds)
DigestionDigestion
NutrientsNutrients
PrebioticPrebiotic
ProbioticProbiotic
Level Out by Excel Equine Feeds is a pelleted horse treat intended to support the digestive health of horses.
Life Time Balancer (Capstone Horse Feed)
HealthHealth
NutrientsNutrients
ProteinProtein
Ration BalancerRation Balancer
Life Time Balancer by Capstone Horse Feed is a pelleted balancer supplement intended for all horse types.
Liquid 747 (Tuttle’s)
Amino AcidAmino Acid
Coat QualityCoat Quality
Mineral BalanceMineral Balance
VitaminsVitamins
Liquid 747 by Tuttle's is an apple flavoured liquid vitamin and mineral supplement. It contains trace minerals and amino acids to support growth and performance.
Lite & Low (CFC Farm Home Center)
FiberFiber
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
Lite & Low from CFC Farm Home Center is a pelleted feed meant for maintenance horses or light work. It contains low sugar and starch.
Lite Ration Balancer (Lifeline)
BroodmareBroodmare
GrowthGrowth
LactationLactation
NutrientsNutrients
Lite Ration Balancer by Lifeline is a pelleted supplemented intended for growing horses and pregnant/lactating broodmares.
LMF California Complete (LMF Horse Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
LMF California Complete is a pelleted feed formulated as an alternative to diets containing pure alfalfa hay. It contains highly digestible fibre from beet pulp, alfalfa hay and soyhulls.
LMF Gold (LMF Horse Feed)
EnergyEnergy
ExerciseExercise
Gut HealthGut Health
NutritionNutrition
LMF Gold is a high calorie textured feed intended to support performance and weight gain in horses. Additionally it provides vitamins, minerals and fibre sources.
LMF Pro-Pellet (LMF Horse Feeds)
Complete FeedComplete Feed
JointsJoints
Mineral BalanceMineral Balance
VitaminsVitamins
LMF Pro-Pellet is a textured high-fiber feed for performance horses in moderate to heavy work. It contains 12% crude protein, and 3.3% fat, along with bio-available trace minerals, organic selenium, live yeast culture, and glucosamine.
LMF Senior (LMF Horse Feeds)
Complete FeedComplete Feed
FiberFiber
JointsJoints
SeniorSenior
LMF Senior is a pelleted complete feed for aged horses. It contains ingredients to support joint and gut health.
LMF Senior Low Carb (LMF Horse Feeds)
Complete FeedComplete Feed
Grain FreeGrain Free
JointsJoints
SeniorSenior
LMF Senior Low Carb feed is a soybean- and alfalfa-based feed for mature horses. It contains 13% crude protein, 8% fat, and 8% NSC.
LMF Super Supplement G NW (LMF Horse Feeds)
Mineral BalanceMineral Balance
Omega 3-6-9Omega 3-6-9
ProteinProtein
VitaminsVitamins
LMF Super Supplement G NW is a ration balancer that contains the essential vitamins and minerals to complement a forage diet. It is a low intake balancer that includes nutrient sources such as soybean meal, barley, and wheat.
LMF Super Supplement NW A (LMF Horse Feeds)
Easy KeeperEasy Keeper
HealthHealth
NutritionNutrition
Ration BalancerRation Balancer
LMF Super Supplement is a ration balancer from LMF Horse Feeds. This feed is intended for easy keepers, and contains vitamins and minerals to balance a forage based diet.
LMF Taco (LMF Horse Feeds)
Complete FeedComplete Feed
Mineral BalanceMineral Balance
NutritionNutrition
VitaminsVitamins
LMF Taco is a complete feed intended for horses of all classes. It contains 12% crude protein and 2.5% fat from timothy and alfalfa hay, corn and oats. This feed is made with cane molasses to encourage palatability.
Low Non-Structural Carbohydrate Feed (LMF Horse Feeds)
Amino AcidAmino Acid
Low NSC FeedsLow NSC Feeds
Mineral BalanceMineral Balance
VitaminsVitamins
This feed from LMF Horse Feeds contains low levels of starch and sugar. It is a pelleted feed that is meant to provide minerals, vitamins, amino acids, and omega fatty acids.
Low Starch (Triple Crown)
Complete FeedComplete Feed
Grain FreeGrain Free
Metabolic SyndromeMetabolic Syndrome
SeniorSenior
Triple Crown Low Starch is a pelleted feed containing a lower level of 13.5% NSC. It has no corn, molasses or alfalfa meal which can cause excitability in horses.
Low Starch Omega Plus (Equine Advantage)
Caloric EnergyCaloric Energy
FatFat
FiberFiber
NutritionNutrition
Low Starch Omega Plus is intended for horses that need moderate to significant calories added to their diet. This diet is suitable for horses with Insulin Resistance, Cushing's Disease, and PSSM due to the low NCS.

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