Locoweed
Your Online Reference for Horse Health and Care
Locoweed - Poisonious Plants, Toxic to Horses...
Locoweed is a common name for plants which fall into two genera; Astraglus and Oxytropis.
While there are hundreds of species of locoweed, only
about 20 are considered poisonous. These plants range from low growing
ground covers to two foot tall clumps of flowers. They can be found throughout
the west from Canada to Mexico in semi-arid foothills and plains. Some
of these species are very similar to each other, so even experienced botanists
can have difficulty differentiating between a poisonous and non-poisonous
specimen.
Horses typically avoid locoweed, but once they have sampled it a few times, they can become addicted to it.
They have to graze on it for a period of time before symptoms appear and the most obvious symptoms may not appear until well after the horse has stopped eating it.
Symptoms include...
- altered gaits
- aimless wandering, sometimes in circles
- impaired vision, bumping into things
- erratic behavioral changes
- appear listless or complacent
- wildly over-reacting to unexpected events
Locoweeds can have such an alkaloid content that one Nevada species has even poisoned the bees which were pollinating the plants.
Alkaloid poisoning has a cumulative effect which can be absorbed over long periods of time until symptoms appear and the effects in many cases are irreversible. Horses found eating locoweeds who have then been confined away from the plants prior to showing advanced symptoms, and who have been fed good quality hay and feed, have experienced a slow but successful recovery.
Plants Toxic To Horses
Poisonious Plants, Toxic to Horses
Your horse will avoid toxic plants providing they have sufficient grazing, but if it is very hungry ...
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