What happens if a horse eats black walnuts?

What happens if a horse eats black walnuts?

Black walnut toxicosis or black walnut poisoning is an imminent threat to horses bedded on shavings, sawdust, or other salvage derived from black walnut trees. The threat is serious, as laminitis and colic are likely outcomes. Consumption of black walnut shavings can also induce laminitis and abdominal pain.

How do you treat black walnut poisoning in horses?


  1. Pain relief, in the form of non-steroidal, anti-inflammatory agents (NSAIDS), such as phenylbutazone or flunixin meglumine (Banamine®), is important.
  2. Washing the horse’s legs to reduce any further absorption of toxin.
  3. Cold-hosing or standing in cold water/ice baths to reduce inflammation and pain.

Can black walnut cause laminitis?

Laminitis occurs through exposure of horses to black walnut shavings used as bedding in stalls. As little as 10 percent of the total shavings, by weight, may result in clinical signs of toxicity in horses. These signs generally occur within 24 to 48 hours of exposure to the contaminated shavings.

What happens if a horse eats a walnut?

The ASPCA reports that no known toxin is responsible for poisoning in horses, but ingestion of the nuts or their hulls can cause digestive problems. When ingested, black walnuts can cause laminitis and colic. A particular mold found within the husk of the nut can cause liver cancer.

What wood is poisonous to horses?

AEC Client Education – Top 5 Trees Toxic to Horses. The top five trees poisonous to large animals are the RED MAPLE, OAK, BOX ELDER, CHOKECHERRY and BLACK WALNUT.

Is black walnut dust toxic?

An unpleasant toxic surprise Black walnut trees produce a toxic chemical called juglone, a chemical so strong it can damage and even kill off vegetative growth around these trees and is blamed for issues in horses who are exposed to black walnut shavings.

Is black walnut toxic to livestock?

The top five trees poisonous to large animals are the red maple, oak, box elder, chokecherry and black walnut. Careful attention must be paid to animals pastured close to these trees, and every effort must be made to prevent access.

Is black walnut toxic?

Source of Toxicity Black walnuts produce a chemical called juglone, which occurs naturally in all parts of the tree, especially in the buds, nut hulls, and roots. Because decaying roots can release juglone, toxicity may occur for several years after a tree has been removed.

What is black walnut toxicity?

Are all walnut trees toxic to horses?

Walnut. Walnut trees are an oddity in that they affect horses in ways you wouldn’t suspect. The branches, leaves, pollen, and nut hulls of the various walnut trees can also poisonous and can cause respiratory problems or even liver cancer in horses.

Why is walnut sawdust bad for horses?

Black walnut shavings or sawdust can give your horse laminitis within a few hours of his hooves touching the black walnut. You might also see horses develop fevers and colic-like signs. Even bedding or shavings that contain under 20% black walnut can induce laminitis in your horse.

Is Juniper toxic to horses?

Even when consuming species with low level toxins, eating too many can easily add up to a lot of toxins. Juniper Berries are also 46% carbs, causing an increase of glucose that can result in an insulin surge and ultimately lead to laminitis in horses. Bottom Line: Do not feed Juniper Berries to horses!

Which trees are poisonous to horses?

There are many trees that have been identified as being toxic to horses. This is a list of some of the most common poisonous trees associated with horses: Black Cherry. Black Locust. Black Walnut. Firecherry. Peach. Plum.

What plants and trees are toxic to horses?

Sugar maple trees, like their cousins the red maple and silver maple, are poisonous to horses, but nontoxic to dogs, cats and humans. Growing 60 to 75 feet tall, this tree favors moist, but well-drained soil and full sun, making it an attractive choice for a shade tree.

Are lilac bushes toxic to horses?

While lilac bushes are not considered toxic to livestock, it is wise to keep horses away from the bushes and do not feed them clippings. Persian lilac (Melia azerdarach) which is not related to true lilacs, is poisonous to dogs and horses, according to the ASPCA Animal Poison Control Center.

Are pistachio trees toxic to horses?

Pistachio Tree Toxic Components. Pistacia spp. contain tannic acid, gallic acid, and a metabolite of gallic acid, pyrogallol, which are oxidizing toxins. If eaten by horses, it causes hemolytic anemia and methemoglobinemia . The effect is similar to that seen by horses that eat wilting red maple leaves and high doses of onions or garlic.