What Should a Pregnant Mare Eat?

A pregnant mare needs a well-planned hay-based feeding plan that promotes gestation, fetal development, and a healthy body condition score without overloading the digestive system. The best approach starts with good hay and pasture, then adds the right concentrate or horse feed only when the mare’s forage intake and nutrient needs make it necessary. Because every mare is different, equine nutrition should be tuned by stage of pregnancy, workload, forage quality, and body condition score rather than by guesswork.

What changes in nutrition during pregnancy?

During gestation, a pregnant mare’s needs change gradually. In early pregnancy, most mares do well on a strong foundation of forage, including hay and pasture, with little or no extra concentrate. As fetal development progresses, especially in the last trimester, the mare needs higher digestible energy, more crude protein, and a better balance of amino acids, minerals, and vitamins. The goal is not simply to feed more; it is to feed more effectively.

A horse feeding chart can help owners compare the mare’s current intake with her body condition score and stage of pregnancy. That chart should be used as a starting point, not a rigid rule. Forage quality matters a lot because high-quality hay or pasture can cover a large share of the diet, while poor forage may require more horse feed grain or a fortified ration balancer to fill nutritional gaps.

In mare nutrition, the biggest shift is usually in the last 90 days before foaling. That is when nutrient demands rise the most and when the right balance of forage, concentrate, and minerals becomes critical. A mare that stays in good condition throughout gestation generally has a much easier time maintaining health, milk production, and recovery after foaling.

What horse feed is best for a pregnant mare?

The best horse feed for a pregnant mare is one that matches her forage intake and her actual nutrient needs. In many cases, a hay-based ration with a balanced feed balancer works well. In other cases, especially if the mare needs more energy or is losing condition, a complete concentrate or horse feed grain may be more appropriate. The feed should supply usable energy, crude protein, amino acids like lysine and methionine, and key minerals such as calcium and phosphorus.

Some owners look for sweet feed for horses because it is familiar, easy to find, and often appealing. However, palatability should not be the only criterion. A pregnant mare benefits more from a well-rounded formula than from a feed that is simply tasty. When comparing options, look at the nutrition analysis and the ingredient list, not just the label name.

Among best horse feed brands, you will often find products designed for broodmares, growth, or performance that can fit a pregnancy feeding plan when used correctly. Purina horse feed, Nutrena horse feed, Tribute horse feed, and Triumph horse feed all have products that may be appropriate depending on the mare’s condition and forage quality. The best option is the one that fits the mare’s needs, your forage, and your budget.

When to choose a ration balancer, concentrate, or forage-based diet

A ration balancer is often the easiest option when the mare gets plenty of good hay and pasture but still needs more vitamins, minerals, and high-quality protein. This option is useful when you want to keep starch lower while still meeting nutritional targets. Many owners choose this route when forage quality is strong and the mare maintains weight easily.

A concentrate is a better option when the mare needs additional calories because forage alone is not enough. In that case, horse feed grain may be part of the plan, but the feed should still be appropriate for gestation rather than designed only for hard-working horses. Purina horse feed and Nutrena horse feed both offer products that can serve as concentrates in a mare ration if the label matches the desired nutrient profile.

A forage-based diet is ideal when the mare has excellent hay or pasture and keeps a healthy body condition score lacking extra calories. Under those conditions, the goal is to maintain gut health with fiber while avoiding excess starch. If the mare’s condition changes, the plan should change with it.

How much grain should a pregnant mare eat per day?

There is no one-size-fits-all answer to how much grain to feed a horse per day because the proper quantity depends on body size, weight score, forage quality, and stage of gestation. Many pregnant mares need very little grain early in pregnancy if forage and pasture are adequate. Later in gestation, some mares may need a moderate amount of concentrate to keep up with energy and protein demands.

A horse feeding chart can help estimate intake, but it should be paired with regular condition scoring. If a mare is easy-keeping and has access to good forage, adding a ration balancer may be enough. If she is getting thinner, the amount of concentrate can be increased gradually. Purina performance horse feed is often searched for in this context, but performance formulas are not always the best first choice for a pregnant mare unless a veterinarian or equine nutritionist says the nutrient profile is appropriate.

One practical rule is to adjust feed little by little and avoid overloading the digestive tract with big grain portions. Split the daily amount into smaller portions when possible, and make forage the foundation of the ration. The mare’s stomach and hindgut are designed for fiber, not big starch meals.

Adjusting feed by body condition and stage of gestation

If a mare is thin, the ideal feed for weight gain is usually one that increases digestible energy without causing excessive starch intake. Purina Impact Performance and Purina Impact Horse Feed are products people commonly compare for horses that need more calories, but the right choice depends on whether the mare truly needs a performance-style concentrate or a more mare-specific ration. Purina impact performance may help some mares that are underweight, but only if it fits the broader feeding plan.

As gestation advances, some mares need a slow increase in calories and protein. Others stay in ideal condition on forage alone. The body condition score is the key guide. A mare that is underweight may need more concentrate; a mare that is already fleshy may need less. The best plan is the one that keeps her consistent through pregnancy without sudden swings in weight.

Important nutrients pregnant mares need

Pregnant mares need more than fuel. They need enough amino acids, especially high-quality protein, to support fetal development and the mare’s own tissues. The protein content matters, but so do amino acids. Lysine is especially important because it is often the first limiting amino acid in horse diets, and methionine also plays a role in development and tissue support.

Mineral balance is also essential. Calcium and phosphorus must be present in the right amounts and ratios to support bone formation. A diet with enough forage, a balanced concentrate, or a ration balancer can help maintain this balance. The best horse feed brands usually pay close attention to these details, especially in broodmare and growth formulas.

Digestible energy should be sufficient to maintain condition without creating unnecessary risk from excess starch. That is why forage quality, feed choice, and ration size all matter. A mare that receives the right amount of fiber, protein, and minerals is much more likely to stay healthy through gestation and foaling.

Key vitamins and minerals to look for on the label

Look for vitamin E, selenium, and trace minerals on the label. Vitamin E supports antioxidant function and muscle health, while selenium is needed in proper amounts for overall metabolic health. Trace minerals such as copper, zinc, and manganese help support bone, tissue, and immune function.

When evaluating horse feed, the label should clearly show the vitamin and mineral package, as well as crude protein, fiber, and starch. A good feed for a pregnant mare often uses a balanced nutrient profile rather than simply a high calorie count. If the feed lacks key micronutrients, you may need a supplement or a different product.

Should expectant mares consume sweet feed?

This feed for horses can be fed to some pregnant mares, but it is not automatically the best choice. Sweet feed is often more palatable and may be easier to get a picky mare to eat, but many sweet feeds contain more starch and sugar than a mare truly needs. That can be a drawback if the mare is tends to hold weight or prone to metabolic problems.

Some owners shop for tractor supply sweet feed because it is affordable and convenient. Cost matters, especially when feeding multiple horses, but the lowest price is not always the best value. Horse feed cost should be weighed against nutrient density, digestibility, and how well the feed fits the mare’s condition and forage program.

If a sweet feed is used, it should be part of a measured ration with enough forage to keep the diet fiber-forward. It should not be chosen just because it is familiar or widely available. A pregnant mare generally benefits more from a balanced, controlled feeding plan than from a high-sugar feed used by habit.

Pros and drawbacks of higher-starch feeds

Horse feed grain can be useful when a mare needs more calories in a smaller volume of feed. The advantage is convenience and energy density. The downside is that higher-starch feeds can increase the risk of digestive upset if fed too fast or in too large an amount. They can also be a poor fit for premium horse feed Bifid mares that do not need extra calories.

When comparing top horse feed brands and poorest horse feed brands, think beyond marketing. The best brands usually provide clear feeding directions, balanced nutrition, and appropriate formulations for broodmares. The worst horse feed brands are often the ones that make it hard to identify nutrient levels or rely heavily on fillers and vague ingredient claims. Always read the label carefully.

How to compare horse feed brands and costs

Horse feed cost is not just about the sticker price. The real cost depends on the amount you need to feed to meet the mare’s needs. Feed with a lower bag price may be more expensive each day if it is not as nutrient-dense. A horse feed cost calculator can help estimate daily feeding cost based on bag price, recommended intake, and the mare’s requirements.

When comparing best horse feed brands, consider nutrient content, ingredient standards, feeding amount, and whether the product is appropriate for gestation. Also consider the quality of forage, because high-quality hay can lower the need for costly concentrate. If the mare can do well on forage and a balancer, that may be more cost-effective than providing a complete grain ration.

It is equally smart to consider the worst horse feed brands in a real-world sense: products that do not meet the mare’s life stage, do not share relevant nutrient details, or promote overfeeding. A poor-quality feed can bring about extra issues than it fixes, especially during pregnancy.

What to know about well-known brands and stores

Purina horse feed is well known and offers several products relied on in broodmare programs, including Purina performance horse feed, Purina Impact Performance, and Purina Impact Horse Feed. These products are not direct substitutes, so the specific formula matters. Certain options are better matched for performance horses, while others may work better in a mare ration.

Tribute horse feed, Nutrena horse feed, and Triumph horse feed also provide products that may suit pregnant mares based on the feed tag and your mare’s needs. When people ask about the best horse feed brands, these names frequently come up because they are readily available and offer multiple formulas. Still, the right choice depends on the specific nutrient profile, not the brand name alone.

Where products like Tractor Supply, Chewy, and Runnings fit in

Retailers such as Tractor Supply, Chewy, and Runnings help simplify to get feed regularly and review options. Tractor Supply horse feed can be handy for routine pickup, and Chewy horse feed may be helpful for delivery and product comparison. Runnings horse feed can also be an option depending on what products are stocked.

Convenience is nice, but the mare’s diet should still be determined by product label, not just by retailer. Tractor Supply sweet feed, for example, may be readily available, but it is not always the ideal option for every pregnant mare. Treat the retailer as a starting point, and the nutritional analysis as the decision tool.

Can in-foal mares take extras and supplements?

Yes, pregnant mares can have extras and supplements sparingly, as long as those extras do not replace balanced horse feed or interfere with the mare’s diet. Feeding horses carrots is usual, and carrots can be a good occasional treat if they are given in moderate amounts. Other safe treats can also be used sparingly.

The key is to keep treats from becoming a habit that changes intake, upsets digestion, or contributes excess sugar. A pregnant mare should still get her main nutrition from hay, supplementary feed if needed, and a balanced mineral and vitamin program. Treats should remain a minor part of the overall feeding plan.

Common feeding mistakes to avoid

One of the main mistakes is overfeeding. A mare does not need endless grain just because she is pregnant. Overfeeding can create unnecessary weight gain and make post-foaling management harder. Another common mistake is rapid diet changes. The digestive system adapts best when ration changes happen slowly.

Colic risk rises when feed changes are abrupt or meals are excessive. Laminitis risk also becomes more serious when the diet contains excessive starch, sugar, or calories relative to the mare’s actual needs. That is why forage, measured concentrate, and careful monitoring matter so much during gestation.

Another error is ignoring body condition score. If you do not routinely check whether the mare is too thin, overweight, or just right, you may miss the chance to adjust feed in time. Feed decisions should be responsive, not reactive.

Illustrated diet plan by gestation stage

A straightforward horse feeding chart for a pregnant mare can be built around forage, body condition score, and pregnancy stage. In the early stage of pregnancy, many mares do well with pasture and hay alone if the forage quality is good. A ration balancer may be added if the diet needs more protein, amino acids, or trace minerals.

In the middle of gestation, the mare often continues on a forage-based plan with minor adjustments. If her condition begins to slip, a concentrate may be added slowly. Forage stays the base, and the amount of concentrate should be set by the mare’s condition, not by habit.

In the last stage, nutrient needs rise more sharply. This is when a mare may need more concentrate, better-quality hay, or both. The goal is to keep her at a healthy body condition score while supporting fetal development and preparing for foaling. The exact plan should reflect how much forage she eats, how dense that forage is, and how much more energy she needs.

A mare that stays consistently in good condition on quality forage, with the right fortification, is often easier to manage than one that is constantly being corrected with large grain meals.

When to call your veterinarian or equine nutritionist

Call your veterinarian or equine nutritionist if the pregnant mare is losing weight, gaining too much weight, refusing feed, or showing signs of colic. You should also get help if the body condition score is hard to maintain, if the forage supply changes, or if you are unsure whether the current horse feed meets gestation needs.

An equine nutritionist can help you build a ration around roughage, hay, and pasture, then decide whether concentrate, horse feed grain, or a ration balancer is needed. This is especially useful when comparing brands like Purina horse feed, Nutrena horse feed, Tribute horse feed, or Triumph horse feed, because the right product depends on the mare and the forage, not the label name alone.

If you are close to foaling and considering a large diet change, ask first. The safest feeding plans are slow, consistent, and based on sound equine nutrition rather than last-minute adjustments.

FAQ

What should a pregnant mare eat?

A pregnant mare should eat a forage-first diet built around quality hay and pasture, with a nutrient balancer or feed mix added only if needed. The best horse feed is one that fits her weight level, hay quality, and stage of gestation while providing enough protein, essential nutrients, calcium, phosphorus, and trace minerals.

How much grain should a pregnant mare get per day?

It depends on her condition score, forage intake, and stage of pregnancy. Some mares need no grain early on, while others need a limited amount of feed concentrate later in gestation. A horse feeding chart can help guide the starting point, but the final amount should be changed based on body condition score and whether the mare is holding weight.

Can pregnant mares eat sweet feed?

Sweet feed for horses can be safe for some pregnant mares if it is fed in the right amount and fits the rest of the ration. However, it is not always the best choice because it can be richer in starch and sugar than necessary. Many mares do better with a more suitable concentrate or ration balancer instead.

What are the key nutrients in horse pregnancy?

Key nutrients include protein, lysine, calcium, phosphorus, vitamin E, selenium, and trace minerals. Digestible energy also matters, especially in late gestation. The mare should get enough fiber from forage, and the feed should support fetal development without relying on excessive starch.

Is it okay to change feed right before foaling?

Major ration changes right before foaling are not ideal. If a change is needed, it should be made slowly and well before the due date whenever possible. Sudden diet changes can contribute to gut upset, colic, or poor feed acceptance, so consistency is usually the better choice.