Home Feeds Ingredients Phosphorus

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.

Feed Name	Brand	ID	Availability	Format	Protein	Fat	ADF	NDF	NSC	DE	Lysine	Calcium	Phosphorus	Magnesium	Potassium	Sodium	Chloride	Iron	Zinc	Copper	Selenium	Biotin	Vitamin E
5-In-1 H/A	MVP	469573		Pelleted	--	--	--	0%	--	--	--	3.21%	1.56%	3.12%	1.1%	--	--	--	2658.84 ppm	886.28 ppm	16.5 ppm	146.67 ppm	3545.12 KIU
Blitz! Paste Original Formula	Peak Performance Nutrients	469318		Paste	10%	0%	0%	0%	0%	0 mcal/kg	1.21%	3.14%	0.81%	0.81%	6.05%	3.43%	5.72 ppm	0 ppm	1608.04 ppm	326.63 ppm	0 ppm	--	0 KIU
Calmer	TopSpec	529646	--	--	5%	4.07%	--	--	--	--	--	4.4%	0.44%	2.2%	--	1.1%	--	--	--	--	--	--	--
Camelina Meal	Lozana Health	1232715	--	--	39.2%	11.7%	12.7%	--	--	4.2 mcal/kg	4.89%	0.37%	0.86%	0.4%	1.21%	0%	0.05 ppm	--	--	--	--	--	1644.21 KIU
D-Carb Balance (Pellets)	MVP	469550		Pelleted	--	--	--	--	--	0 mcal/kg	--	5.62%	2.76%	5.88%	--	0.49%	0.76 ppm	--	4960.4 ppm	1234.59 ppm	24.25 ppm	--	5511.56 KIU
EquiBalance	ESollio Agriculture	670364		Pelleted	--	--	--	--	--	--	--	5.26%	2.63%	0.31%	1.05%	--	--	--	3065 ppm	700 ppm	5 ppm	50 ppm	2500 KIU
Equilistic	Excel Equine Feeds	1221884	--	Pelleted	11.1%	2.8%	15.6%	27.8%	--	1.14 mcal/kg	--	4.44%	2.22%	--	--	--	--	--	133.3 ppm	38.9 ppm	--	--	--
ÉvoluFib	Meunerie Soucy	1079095	--	Pelleted	17.8%	8.9%	23.8%	33.8%	--	3.22 mcal/kg	10%	1.6%	0.8%	--	--	0.44%	--	--	194.4 ppm	45.96 ppm	--	7.4 ppm	983.3 KIU
Fiber & Fat Comfort	Meunerie Benjamin	1079083	--	Cubes	14.4%	5.3%	27.8%	43.9%	15%	2.79 mcal/kg	4.6%	1.1%	0.6%	0.33%	1.39%	--	--	--	205.6 ppm	66.7 ppm	0.7 ppm	1.1 ppm	444.4 KIU
Grand Premium Plus	Grand Meadows	386559		Pelleted	16%	30.3%	15%	18%	17%	4.96 mcal/kg	5.57%	1.07%	0.58%	0.51%	0.73%	0.27%	0.4 ppm	1470.6 ppm	1176.5 ppm	441.18 ppm	5.88 ppm	117.6 ppm	2941.18 KIU
H-Formula	Biopteq	677908		Pelleted	31.57%	4.21%	8.8%	21.9%	--	3.13 mcal/kg	--	2.31%	1.16%	0.32%	2%	1.36%	--	484.21 ppm	510.5 ppm	105.2 ppm	--	46.3 ppm	410.5 KIU
Horse Mineral	Pegasus	529818		--	--	--	--	--	--	0 mcal/kg	--	20%	10%	2.2%	--	--	--	4766.7 ppm	4444.4 ppm	1333.3 ppm	--	44.4 ppm	5555.6 KIU
IR Support	Earth Song Ranch	1232553	--	--	4.21%	--	--	--	--	0 mcal/kg	42.84%	5.77%	3.68%	7.22%	--	1.2%	1.7 ppm	--	2597.4 ppm	901.88 ppm	10.82 ppm	86.58 ppm	5411.26 KIU
KelatoVIT Performance Pellet	Kelato	763448	--	Pelleted	--	--	--	--	--	1.82 mcal/kg	--	7%	5.26%	2.81%	--	--	--	4210.5 ppm	3216.37 ppm	1403.5 ppm	25.73 ppm	46.7 ppm	15.6 KIU
KelatoVIT Performance Powder	Kelato	764252	--	Powdered	--	--	--	--	--	0 mcal/kg	--	6.7%	5.26%	2.81%	--	--	--	4040.4 ppm	3216.37 ppm	1346.8 ppm	25.73 ppm	44.8 ppm	14.9 KIU
Level Out	Excel Equine Feeds	1223281	--	Pelleted	15.6%	3.3%	13.3%	17.8%	--	3.32 mcal/kg	6.4%	1.33%	0.67%	--	--	--	--	--	94.4 ppm	55.6 ppm	33.3 ppm	--	1224.8 KIU
Muscle-UP	AniMed	408604		Powdered	0%	--	--	0%	3.75%	0 mcal/kg	0%	1.94%	0.35%	0.43%	9.44%	2.41%	3.77 ppm	352.74 ppm	282.19 ppm	--	--	--	30864.74 KIU
NutrientWise	Wiser Concepts	1177172	--	--	14.1%	--	--	--	--	1.99 mcal/kg	--	2.77%	1.52%	--	--	--	--	--	3555.6 ppm	1212.1 ppm	--	--	6413.4 KIU
Optimum Eq 2.0	BioStar	1203363	--	Powdered	29%	10.9%	17.4%	20.6%	--	1.63 mcal/kg	4.25%	0.81%	0.54%	0.58%	0.91%	3.83%	--	384.8 ppm	1272.7 ppm	203 ppm	20.1 ppm	--	--
Optimum GI	BioStar	646790		Powdered	32.9%	8.02%	10.06%	27.7%	14.4%	3.66 mcal/kg	4.8%	1.15%	0.95%	0.62%	0.01%	3.28%	--	717 ppm	0.4 ppm	30200 ppm	309 ppm	--	--
Optimum Senior JS 2.0	BioStar	1201431	--	Powdered	29.6%	9.6%	12.42%	16.57%	9.7%	3.61 mcal/kg	5.12%	0.73%	0.49%	0.47%	0.91%	2.85%	--	289.9 ppm	938.84 ppm	159.6 ppm	15.66 ppm	--	--
Original Performance Formula	Wilson Feeds	1210716	--	Textured	17.8%	--	20.8%	26%	--	3.11 mcal/kg	--	2.33%	1.11%	0.67%	1.11%	1.44%	--	833.3 ppm	355.6 ppm	144.4 ppm	1.33 ppm	--	230 KIU
Phosphate - Rock		71614		--	0%	0%	0%	0%	0%	0 mcal/kg	0%	35%	13%	0.41%	0.06%	0.03%	0 ppm	16800 ppm	100 ppm	10 ppm	0 ppm	--	0 KIU
Phosphate - Rock Low Fluoride		71615		--	0%	0%	0%	0%	0%	0 mcal/kg	0%	35%	14%	0%	0%	0%	0 ppm	0 ppm	0 ppm	0 ppm	0 ppm	0 ppm	0 KIU
Phosphate - Rock Soft		71616		--	0%	0%	0%	0%	0%	0 mcal/kg	0%	17%	9%	0.38%	0.3%	0.1%	0.01 ppm	15000 ppm	90 ppm	64 ppm	0 ppm	--	0 KIU
Primequine	Newmac Animal Feeds	1205877	--	--	--	--	--	--	--	0 mcal/kg	--	4.55%	1.52%	1.01%	1.21%	--	--	484.8 ppm	1919.2 ppm	673.7 ppm	12.12 ppm	50.5 ppm	6161.6 KIU
Pro V.M.	Peak Performance Nutrients	469341		Powdered	5.5%	--	--	0%	--	--	33.26%	6.6%	4.02%	2.41%	6.03%	3.92%	6.13 ppm	--	5500 ppm	2512.56 ppm	20.1 ppm	160.8 ppm	40201.01 KIU
Pro V.M. with EFAs	Peak Performance Nutrients	469342		Powdered	5.03%	--	9.63%	26.55%	--	--	19.47%	3.37%	2.01%	1.34%	2.43%	4.2%	6.74 ppm	--	531.23 ppm	804.02 ppm	14.36 ppm	86.15 ppm	10552.76 KIU
Ration Balancer Pellets	Ritchie Smith - Harmony	760080	--	Pelleted	31.6%	5.3%	12.5%	40%	8.4%	2.9 mcal/kg	11.7%	3.7%	1.6%	0.53%	--	1.05%	--	815.8 ppm	882.1 ppm	309.5 ppm	2.1 ppm	26.3 ppm	2105.3 KIU
Refit	4996	1223316	--	Pelleted	20%	3.9%	8.9%	21.1%	--	1.3 mcal/kg	11.1%	3.33%	2.22%	--	--	--	--	--	666.7 ppm	222.2 ppm	2.22 ppm	--	2449.6 KIU
Repair Daily Formula	Red Hot Equine Aminos	1126175		Powdered	24.2%	0.5%	1.3%	21.9%	--	1.26 mcal/kg	7.83%	0.13%	0.04%	0.02%	0.14%	0%	0 ppm	12.6 ppm	2.1 ppm	--	--	--	1162.2 KIU
Summer Games Electrolytes	Kentucky Performance Products	71763	--	--	--	--	--	--	--	0 mcal/kg	--	0.4%	0.53%	0.54%	12.5%	22.8%	31.2 ppm	1860 ppm	900 ppm	350 ppm	--	--	--
Tie Free TMC Paste	Peak Performance Nutrients	469345		Paste	3.1%	--	--	0%	--	--	16.53%	2.57%	0.02%	0.67%	9.28%	0.8%	1.26 ppm	--	--	--	--	--	5824.94 KIU
Tonix	Sollio Agriculture	408881		--	14.44%	2.22%	34.6%	95.5%	10%	1.13 mcal/kg	7.7%	1.11%	0.56%	0.28%	1.28%	1.39%	3 ppm	239.1 ppm	555.56 ppm	66.67 ppm	1.56 ppm	33.33 ppm	1111.11 KIU
Topp40	Sollio Agriculture	671376		Pelleted	42.1%	2.1%	6.57%	18.13%	--	3.15 mcal/kg	--	3.15%	1.57%	0.26%	1.36%	1.05%	--	--	--	--	--	--	500 KIU
Wilson's Cool Formula	Wilson Feeds	1169649		Multi-particle Feed, Textured, Granular, Crumble	21.05%	6.32%	20.05%	30.05%	--	2.95 mcal/kg	--	2.3%	1.26%	0.6%	1.3%	1.1%	--	843.2 ppm	336.8 ppm	131.6 ppm	1.26 ppm	10.5 ppm	221.1 KIU

Feeds, Supplements & Products

AminoTrace+ Vitamin and Mineral Supplement (Mad Barn)

Hoof Health

Metabolic Syndrome

Organic Trace Minerals

Vitamins

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 Health

Growth

Ingredient

Mineral 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.

Bone Supplement Mineral Supplements