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The Daily Insight

What causes diarrhea in older horses

Author

Rachel Hickman

Published Apr 15, 2026

Some of the causes of diarrhea in a horse include: Behavioral, such as nervousness caused by being in a trailer or attending an event or the stress of moving to a new stable. Change of feed—either new feed the horse isn’t used to or overfeeding its regular feed. Access to lush pasture.

How can I help my senior horse with diarrhea?

Diet plays an important role in managing the loose manure. I try to keep the horse on a combination of beet pulp, well soaked hay cubes, and a complete senior diet, avoiding long-stem hay altogether. This can be challenging as it is often hard to keep weight on these guys.

Are alfalfa cubes good for senior horses?

Protein requirements: Older horses in good body condition have protein requirements that are similar to those of horses at maintenance. … Once again forage sources such as Alfalfa pellets, cubes or chopped forage are ideal to increase the quantity and quality of protein in the diet.

What can you give a horse that has diarrhea?

In a healthy, well-hydrated horse, this will be two seconds or less. For mild diarrhea, you can add Pepto Bismol (bismuth subsalicylate) to your horse’s daily ration. Give this at about five ounces (10 tablespoons) at a time, but don’t overdo it. This is most easily given via a plastic dosing syringe.

Why does my horses poop look like cow poop?

It is normal for there to be some variation in the consistency of a horse’s manure. Just because a horse has soft manure does not mean they are sick. … A horse’s manure may also soften as a result of a feed change, but in most cases should return to normal within a day or two.

Can hay give horses diarrhea?

Simple changes in feed, exposure to lush grass, or a bite of moldy hay can cause brief irritation of the bowel, giving a horse diarrhea for a day or two, but anything more than that could be from a variety of more serious causes.

Do worms cause diarrhea in horses?

Parasitic worms live in the intestines of horses and ponies. Small numbers of worms can be tolerated, causing no effect on well-being. Larger worm burdens can cause a range of problems including ill thrift, diarrhea, colic and death.

What should I be feeding my senior horse?

Good quality grass hay and corn or a complete pelleted ration for mature (not aged) horses are the feeds of choice. Avoid legumes (alfalfa and clover), wheat bran and beet pulp due to high calcium (legumes, beet pulp) or phosphorus (wheat bran) content.

Which hay is best for senior horses?

The horse needs to be able to chew and break down the hay, so select good-quality, soft hay that isn’t overly mature; it shouldn’t have thick, fibrous stalks. Coleman has found that mixed grass-legume hay, such as orchard-alfalfa or timothy-alfalfa, is often a good choice.

What to feed an old horse who can't eat hay?

Alternatives to Traditional Hay Adding beet pulp to your horse’s morning meal is one popular way to help them maintain their weight and control their rate of grain consumption. Beet pulp is available with or sans added molasses and its soft texture makes it easy for toothless horses to consume.

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Why has my horse got sloppy poo?

Diarrhea may represent a simple digestive ‘upset’, e.g., following a sudden change in diet, when it causes no other significant illness. When caused by infection, intestinal parasitism or other significant gastrointestinal or metabolic abnormality, the horse may be clinically ill and need veterinary attention.

Why is my horses poop not solid?

If your horse’s manure doesn’t form neat balls, it may indicate a more serious health issue. Piles of soft or liquid manure could also be the result of stress, such as after a hard work out. If your horse has soft or loose manure, take his temperature. If he has a fever, contact your veterinarian.

What causes loose droppings in horses?

If too much starch and simple sugar reach the hind gut undigested, this is quickly fermented, releasing lactic acid. This makes the hind gut acidic, killing off the bacteria needed to ferment forage, and releasing toxins, which can lead to loose droppings, colic, and laminitis.

What are the signs that a horse has worms?

  • Weight loss.
  • Colic.
  • Diarrhea or constipation.
  • Rough hair coat.
  • Poor growth in foals.
  • Respiratory problems. (nasal discharge, cough)

What do worms in horse poop look like?

Adult worms present in the horse’s feces look like spaghetti. The eggs of pinworms are laid around the horse’s anus and are extremely itchy. If your horse is rubbing its tail a lot you should check them for pinworms.

What is colitis in a horse?

Colitis, or diarrhea, is defined as inflammation of the large intestine (cecum and colon) and can affect adult horses as well as foals. Colitis is commonly treated at equine hospitals as many affected horses require intensive treatment. Sporadic (single) cases or outbreaks may occur.

Is alfalfa good for horses with diarrhea?

Allowing horses unlimited access to very high quality alfalfa hay may result is some digestive upset (such as diarrhea). … Recent research suggests that alfalfa can be more beneficial to the equine digestive tract than some other hays. Many performance horses develop stomach ulcers.

Can beet pulp help a horse with diarrhea?

Beet pulp is good for horses with diarrhea. Beet pulp is often considered a good way to treat diarrhea in horses. To counter the effects of diarrhea, you need a feed that is high in fiber and dry content.

Are Oats good for older horses?

Yes – if your horse needs them! Of all the cereal grains (e.g. corn, barley, wheat, etc.) oats have the most appropriate nutritional profile for horses. … If your horse has nutrient requirements that are higher than what is being met with hay alone – particularly energy (calories), oats can be an excellent option.

What age is a horse senior?

By age definition “senior” horse has been defined as 15+ years of age. Due to improvements in veterinary care and nutrition, horse routinely live 25-30 years of age, some into their 40’s. It is not uncommon to see horses in late teens and twenties performing at high levels.

What time of day is sugar highest in grass?

Sugar content of grasses is higher in the afternoon than in the morning and sugar content is lowest at night, so grazing should be restricted to the safest times of the day to graze, early morning and night times.

How many times a day should I feed my senior horse?

Assure high quality sources of protein, vitamins and minerals. If the horse cannot chew well, one can make a slurry of complete (and/or) extruded feed. Feed at least 3 times a day.

Can a horse founder on senior feed?

Horses can founder even though they are on a senior feed diet. A simple grass hay diet is recommended for horses at risk of foundering. Senior feeds are made with ingredients that are typically high quality and easy to eat; however, horses susceptible to founder may continue to have problems.

Do senior horses need supplements?

Older horses need more fiber, more concentrated calories and more vitamins and minerals. An older horse is often better off with a diet that consists mostly of hay, a specialized, balanced senior equine feed and vitamin and mineral supplementation.

Why do old horses stop eating?

Why do old horses stop eating? Old horses are often finicky eaters and if hay or grain is bad they will refuse to eat it even when younger horses will. Old horses may also not eat if their feed tastes too salty or has even the slightest amount of mold. An old horse could also be sick and refuse to eat.

Is Tifton 85 good for horses?

Tifton is beneficial to any horse. Many vets recommend horses that have weight, laminitis or founder issues to be on a diet strictly of Tifton due to its low sugar content. Tifton is also great for HYPP horses and can be one of the only hays that some HYPP horses do well on.

Is oat hay bad for horses?

You can feed oat hay, but feed it to mature horses and make sure nitrate levels are at acceptable levels. Oat hay is not a commonly fed hay but can be an effective hay for older horses. … The energy and protein content of good oat hay makes it a suitable forage for mature horses at maintenance and early gestating mares.

Can horses get diarrhea from stress?

When a horse is stressed, they may produce more manure than usual in a short period of time and may also experience diarrhea. Horse diarrhea can also be caused by a poor diet, which is a common cause of stress in horses.

How do you tell if a horse needs to be dewormed?

  1. Diarrhea.
  2. Loss of hair around its tail from rubbing.
  3. Not eating normally.
  4. Losing weight.
  5. Lack of energy, sluggish.
  6. Anemia.
  7. Colic.
  8. Impaction.

What is pinworm disease?

Pinworm infection (called enterobiasis or oxyuriasis) causes itching around the anus which can lead to difficulty sleeping and restlessness. Symptoms are caused by the female pinworm laying her eggs. Symptoms of pinworm infection usually are mild and some infected people have no symptoms.

Can you see worms in horse poop?

You can’t see them because the eggs are too small. But occasionally, you may see internal parasites in the adult or larva form that have worked their way through your horse’s digestive system and into the manure.