Manganous Oxide - Feed Ingredient

Manganous oxide (MnO) is an inorganic compound incorporated into horse feeds as a source of manganese, an essential trace mineral. In its manganous (Mn²⁺) state, it remains chemically stable and cost‑effective, though its bioavailability is typically lower than that of organic chelates such as manganese proteinate.

For horses, manganese supports bone and cartilage formation, joint health, and the activity of manganese‑dependent enzymes involved in energy metabolism and antioxidant defense. Although manganese deficiency is uncommon in equines, maintaining adequate dietary manganese helps support musculoskeletal health, development, and metabolic function.

The following equine feeds, supplements and products contain Manganous Oxide 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
16% Horse Power Supplement Block	Agrimaster	1238561		--	16.2%	1.5%	7.1%	14.1%	--	1.4 mcal/kg	--	6.06%	1.01%	--	--	6%	9 ppm	--	90.9 ppm	30.3 ppm	0.51 ppm	--	44.5 KIU
Balance Supplement	Peninsula Performance Feeds	632699		Pelleted	26.32%	4.21%	7.63%	9.54%	--	3.16 mcal/kg	--	4.42%	1.9%	0.42%	--	1.05%	--	--	421.05 ppm	210.53 ppm	2.11 ppm	--	1500 KIU
Big 6 Mineral Salt	American Stockman	1227532		--	--	--	--	--	--	0 mcal/kg	--	--	--	--	--	39.4%	59.1 ppm	2424.2 ppm	323.2 ppm	323.2 ppm	--	--	--
Blue Label 2X	Pennwoods Equine	1169088	--	--	--	--	--	--	--	0 mcal/kg	--	11.11%	6.06%	6.1%	1.7%	--	--	5870.7 ppm	7478.8 ppm	1868.7 ppm	35.56 ppm	--	2666.7 KIU
Energized Maintenance	Bluebonnet Feeds	430630		Pelleted	15.6%	5.6%	17.8%	37.8%	26.7%	2.87 mcal/kg	5.7%	1.17%	0.67%	0.33%	0.89%	--	--	--	250 ppm	72.2 ppm	0.56 ppm	1.1 ppm	306.2 KIU
Energized Performance	Bluebonnet Feeds	430629		Pelleted	13.33%	10%	22.2%	37.8%	22.3%	3.09 mcal/kg	6.7%	1.39%	0.83%	0.33%	0.89%	--	--	--	277.8 ppm	88.9 ppm	0.56 ppm	1.1 ppm	306.2 KIU
Energized Textured	Blue Bonnet Feeds	430631		Textured	11.1%	4.4%	18.9%	31.1%	31.1%	2.64 mcal/kg	7%	1.17%	0.5%	0.17%	0.89%	--	--	--	277.5 ppm	72.2 ppm	0.56 ppm	1.1 ppm	306.2 KIU
Enrich Plus Senior Ration Balancing Horse Feed	Purina	1099375	--	Pelleted	35.6%	5.6%	8.9%	15.6%	14.4%	2.73 mcal/kg	8.4%	4.17%	1.78%	--	--	0.67%	--	--	555.6 ppm	205.6 ppm	2.22 ppm	--	1469.7 KIU
Essentials Free Choice Mineral	Bluebonnet Feeds	1232088	--	Granular	--	--	--	--	--	0 mcal/kg	--	14.21%	7.37%	1.05%	0.53%	2.3%	3.5 ppm	--	5315.8 ppm	1578.9 ppm	16.84 ppm	139.2 ppm	3481 KIU
EveryDayBalance	Enviro Equine	1195147	--	--	20.2%	20.2%	--	--	--	2.49 mcal/kg	20%	4.44%	2.22%	0.51%	--	--	--	--	3473.9 ppm	1068.9 ppm	8.91 ppm	--	4453.7 KIU
Freely's Equine Formula	ADM Nutrition	1242606		Pelleted	14.72%	6.67%	27.78%	50%	--	2.77 mcal/kg	--	0.72%	0.56%	--	1.11%	0.22%	0.33 ppm	--	166.67 ppm	38.89 ppm	0.76 ppm	--	--
Glanzen Lite Complete	HorseTech	1235015		Powdered	27.11%	25.3%	--	--	--	3.4 mcal/kg	4.9%	--	--	--	--	--	--	--	3189.79 ppm	1107.57 ppm	8.86 ppm	265.82 ppm	22151.34 KIU
Horse Mineral	New Rosedale Feedmill	1239641		Powdered	--	--	--	--	--	0 mcal/kg	--	12.22%	8.08%	3.23%	--	3.2%	4.88 ppm	10101 ppm	8080.8 ppm	2303 ppm	90.91 ppm	--	3030.3 KIU
One'N Only	Wendlands	1180033	--	--	12.2%	1.7%	28.8%	38.8%	--	2.75 mcal/kg	--	0.66%	0.5%	--	--	--	--	--	177.8 ppm	44.4 ppm	0.33 ppm	--	--
ProForce Fuel XF	Nutrena	401520		--	14.44%	14.44%	13.33%	30%	20%	3.84 mcal/kg	6.93%	0.83%	0.56%	--	--	--	--	--	244.44 ppm	61.11 ppm	0.67 ppm	2.45 ppm	367.44 KIU
Purina Ultium Senior Horse Feed	Purina	1145440	--	Pelleted	15.6%	13.9%	24.4%	42.2%	13.1%	3.97 mcal/kg	6.4%	1.44%	0.67%	0.38%	1.11%	0.78%	--	--	311.1 ppm	88.9 ppm	0.7 ppm	--	489.9 KIU
SafeChoice All Life Stages	Nutrena	978536	--	Pelleted	15.6%	8.9%	15.6%	35.6%	22.2%	3.32 mcal/kg	6.4%	1.2%	0.8%	--	--	--	--	--	177.8 ppm	55.6 ppm	0.7 ppm	1.1 ppm	293.9 KIU
Senior Combo Multi-Function Supplement	Agrimaster	1227217	--	Powdered	19.2%	16.2%	16.4%	20.5%	--	4.04 mcal/kg	--	1.26%	0.4%	--	--	--	--	--	197 ppm	65.7 ppm	0.91 ppm	20.2 ppm	505.1 KIU
Senior Horse Pelleted	Agrimaster	1234200		Pelleted	15.6%	5.6%	20%	40%	22.3%	3.03 mcal/kg	4.6%	0.92%	0.67%	--	--	--	--	--	133.3 ppm	33.3 ppm	0.33 ppm	--	147 KIU
Sweet 12% Textured	Agrimaster	1234213		Textured	17.8%	3.3%	11.1%	27.8%	--	3.17 mcal/kg	--	1.39%	0.67%	--	0.78%	0.3%	0.5 ppm	--	111.1 ppm	33.3 ppm	0.33 ppm	--	98 KIU
Sweet-N-Salty (Apple)	Kalmbach Feeds	430412	--	--	--	--	--	--	--	0 mcal/kg	--	0.4%	--	0.11%	--	39%	58.5 ppm	--	80.8 ppm	252.5 ppm	--	--	--
Sweet-N-Salty (Banana)	Kalmbach Feeds	430413	--	--	--	--	--	--	--	0 mcal/kg	--	0.4%	--	0.11%	--	39%	58.5 ppm	--	80.8 ppm	252.5 ppm	--	--	--
Sweet-N-Salty (Peppermint)	Kalmbach Feeds	430414	--	--	--	--	--	--	--	0 mcal/kg	--	0.4%	--	0.11%	--	39%	58.5 ppm	--	80.8 ppm	252.5 ppm	--	--	--
Triumph Senior Horse Feed	Nutrena	401535		Pelleted	15.73%	7.87%	20.22%	42.7%	23.59%	3.07 mcal/kg	4.29%	0.84%	0.67%	--	--	--	--	--	134.83 ppm	33.71 ppm	0.34 ppm	0.74 ppm	185.78 KIU

Feeds, Supplements & Products

16% Horse Power Supplement Block (Agrimaster)

Mineral Balance

Nutrition

Protein

Vitamins

16% Horse Power Supplement Block by Agrimaster is a supplement block intended to provide protein, vitamins and minerals for all classes of horses on pasture or forage diets.

Balance Supplement (Peninsula Performance Feeds)

Health

Immunity

Mineral Balance

Nutrition

Balance Supplement from Peninsula Performance Feeds is a pelleted ration balancing supplement for horses. Balance Supplement contains chelated trace minerals and is intended to be fed as the sole ration for easy keepers.

Commercial Feeds & Supplements Ration Balancer Supplement

Big 6 Mineral Salt (American Stockman)

Health

Mineral Balance

Performance

Weight Issues

Big 6 Mineral Salt from American Stockman is a mineral supplement in block or bag form. It is intended to support weight gain, performance and health.

Commercial Feeds & Supplements Supplement Mineral Supplements Minerals

Blue Label 2X (Pennwoods)

Health

Mineral Balance

Organic Trace Minerals

Vitamins

Blue Label 2X by Pennwoods is a complete vitamin and mineral supplement designed for horses that contains added amino acids and yeast.

Minerals Supplement Vitamin Supplements

Country Feeds Adult 12 Textured (Nutrena) [Discontinued]

Digestion

Hoof Health

Muscle

Nutrition

Country Feeds Adult 12 Textured is a textured complete feed formulated for all activity levels of mature horses. It provides 12% protein, 6% fat, and 24% NSC.

Commercial Feeds & Supplements Feeds

Energized Maintenance (Bluebonnet Feeds)

Complete Feed

Grains

Mineral Balance

Vitamins

Energized Maintenance from Bluebonnet Feeds is a pelleted feed intended for maintenance horses at all life stages. This feed contains 14% crude protein, 5% crude fat, and 12% crude fibre.

Commercial Feeds & Supplements Feeds

Energized Performance (Bluebonnet Feeds)

Grains

Mineral Balance

Performance

Vitamins

Energized Performance from Bluebonnet Feeds is a pelleted feed intended for performance horses with higher energy requirements. This feed contains 12% crude protein, 9% crude fat, and 13% crude fibre.

Commercial Feeds & Supplements Feeds

Energized Textured (Blue Bonnet Feeds)

Grains

Mineral Balance

Nutrients

Vitamins

Energized Textured from Bluebonnet Feeds is a sweet texturized feed intended for adult horses at maintenance. It provides 10% crude protein, 4% crude fat, and 12% crude fibre.

Commercial Feeds & Supplements Feeds

Enrich Plus Senior (Purina)

Complete Feed

Dental

Fiber

Senior

Enrich Plus Senior Ration Balancing Horse Feed by Purina is a complete pelleted feed intended for senior horses. It is to be fed in addition to forage.

Ration Balancer

Essentials Free Choice Mineral (Bluebonnet Feeds)

Electrolyte

Health

Mineral Balance

Vitamins

Essentials Free Choice Mineral by Bluebonnet Feeds is a free-choice mineral in granule form. It is intended to support overall health in horses on pasture or hay-based diets.

Commercial Feeds & Supplements Minerals Supplement

EveryDayBalance (Enviro Equine)

Performance

Ration Balancer

Skin + Hair

Weight Issues

EveryDayBalance by Enviro Equine is a flax-based vitamin and mineral supplement intended to support overall health and well-being in all horse types.

Commercial Feeds & Supplements Supplement Mineral Supplements Vitamin Supplements

Freely’s Equine Formula (ADM Nutrition)

Complete Feed

Fiber

Nutrition

Senior

Freely's Equine Formula is a complete feed by ADM Nutrition intended for all horses. It contains 14% crude protein and 5% fat.

Commercial Feeds & Supplements Complete Feeds

Glanzen Lite Complete (HorseTech)

Easy Keeper

Flavor

Hoof Health

Skin + Hair

Glanzen Lite Complete by HorseTech is a powdered supplement intended to support hoof, skin and coat health in easy-keepers and picky eaters.

Commercial Feeds & Supplements Supplement Hoof Supplement Skin & Coat Supplement

Horse Vitamin-Mineral Premix (New Rosedale Feedmill)

Health

Mineral Balance

Senior

Vitamins

Horse Vitamin-Mineral Premix by New Rosedale Feedmill is a vitamin and mineral premix supplement for mature horses.

Commercial Feeds & Supplements Supplement Vitamin Supplements Minerals

One’N Only (Wendlands)

Caloric Energy

Complete Feed

Health

Nutrition

One'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.

Complete Forages Complete Feeds Feeds Hay Stretcher

ProForce Fuel XF (Nutrena)

Competition Horses

Energy

Exercise

Fat

Nutrena ProForce® Fuel XF is a 13% fat horse feed formulated for high performance horses that need additional nutritional support to meet the demands of stress and rigorous training.

Commercial Feeds & Supplements Feeds Energy Sources

Purina Ultium Senior Horse Feed (Purina)

Fat

Fiber

Low NSC Feeds

Senior

Purina Ultium Senior Horse Feed is a high-fibre, high-fat, low-starch, low-sugar pelleted extruded feed specially formulated for senior horses.

Commercial Feeds & Supplements Feeds Fat Fiber

SafeChoice All Life Stages (Nutrena)

Gut Health

Immunity

Organic Trace Minerals

Topline

SafeChoice All Life Stages is a pelleted feed that is meant to support skin and coat health, hoof health, and topline support. It is also supposed to assist with gut health and immunity, and contains organic trace minerals.

Commercial Feeds & Supplements Feeds Minerals Organic Minerals Yeast Supplements

Senior Combo Multi-Function Supplement (Agrimaster)

Hoof Health

Joints

Probiotic

Skin + Hair

Senior Combo Multi-Function Supplement by Agrimaster is a powdered supplement intended to support overall health in senior horses.

Commercial Feeds & Supplements Supplement Hoof Supplement Probiotics Joint Supplement Skin & Coat Supplement

Senior Horse Pelleted (Agrimaster)

Digestion

Health

Immunity

Senior

Senior Horse Pelleted by Agrimaster is a pelleted feed intended to meet the nutritional requirements of senior horses.

Commercial Feeds & Supplements Complete Feeds

Sweet 12% Textured (Agrimaster)

Gut Health

Hoof Health

Muscle

Skin + Hair

Sweet 12% Textured by Agrimaster is a textured feed intended to support health and performance of all horse types.

Commercial Feeds & Supplements Complete Feeds

Sweet-N-Salty (Apple) (Kalmbach Feeds)

Electrolyte

Hydration

Mineral Balance

Nutrition

Kalmbach Feeds Sweet-N-Salty Apple is a salt treat for horses that provides sodium, trace minerals, and apple flavouring in a block form.

Commercial Feeds & Supplements Minerals

Sweet-N-Salty (Banana) (Kalmbach Feeds)

Electrolyte

Hydration

Mineral Balance

Nutrition

Sweet-N-Salty Banana by Kalmbach Feeds is a treat lick for horses that provides salt, trace minerals, and banana flavouring in a block form. It can be used to supplement salt in a palatable form.

Commercial Feeds & Supplements Minerals

Sweet-N-Salty (Peppermint) (Kalmbach Feeds)

Electrolyte

Hydration

Mineral Balance

Nutrition

Sweet-N-Salty Peppermint by Kalmbach Feeds is a treat for horses that provides salt, trace minerals, and mint flavouring in a block form. It can be used as a palatable source of sodium in the equine diet.

Commercial Feeds & Supplements Minerals