Hedge apples, also known as Osage oranges, contain a substance called psoralen, which can cause photosensitization in horses. This means that the horse's skin becomes abnormally sensitive to sunlight, leading to skin irritation, inflammation, and even blistering.
Symptoms of photosensitization in horses include:
* Redness and swelling of the skin
* Blistering and crusting
* Hair loss
* Lethargy and weakness
Other potential risks of horses eating hedge apples:
* Gastrointestinal upset: Hedge apples can cause digestive issues such as colic and diarrhea.
* Toxicity: Some horses may experience mild to moderate toxic effects from ingesting hedge apples.
It is important to note that:
* Not all horses will react to hedge apples in the same way. Some horses may be more sensitive to psoralen than others.
* The amount of hedge apples consumed can influence the severity of the reaction.
* Horses are more susceptible to photosensitization during the spring and summer months.
To prevent your horse from eating hedge apples:
* Keep your horse away from hedge apple trees.
* Remove any hedge apples from your horse's pasture.
* Monitor your horse closely for any signs of photosensitization.
If you suspect your horse has eaten hedge apples, contact your veterinarian immediately.