Plants Toxic to Horses

الثلاثاء 19/سبتمبر/2023 - 05:14 ص

Water Hemlock

All livestock are affected.
Toxicity - extremely toxic (a piece of root the size of a walnut will kill a cow in 15 minutes)
Poisonous part - all parts, especially the root
Distribution - marshes, ditches, wet pastures
Symptoms - Affects central nervous system, causing nervousness, breathing difficulties, muscle tremors, collapse, convulsions, death.

All animals affected, including chickens.
Toxicity – extreme
Distribution - crop fields, waste areas, barnyards
Poisonous part - entire plant, especially seeds
Symptoms - Affects central nervous system. Has hallucinogenic properties
Jimson weed has a strong, foul odor and an unpleasant taste. Animals are often poisoned when feed is contaminated with jimson weed seed.
Jimson weed is an annual plant; mowing helps eliminate these plants.

Affects horses, cows, sheep, goats, pigs and chickens.
Toxicity - high
Distribution - common in moist areas, edge of woods, along roads
Poisonous parts - leaves and stems
Symptoms - trembling, stiffness, ataxia, coma, death
White snake root's toxin, trematol, passes to humans in milk resulting in milk sickness.

Affects all livestock, most dangerous to ruminants.
Toxicity - highly toxic
Poisonous part - leaves, twigs, bark and seeds contain cyanide, wilted leaves are more toxic than the rest.
Symptoms - anxiety, breathing problems (suffocation), staggering, convulsions, collapse, death.

Only horses and ponies are reported to be affected.
Toxicity - extremely toxic (1.5-3 pounds cause toxicity)
Poisonous part - wilted or dried leaves
Symptoms - breathing difficulties, jaundice, dark brown urine, death.
Toxins (gallic acid and others) destroy red blood cells. Red maple hybrids, such as silver and sugar maple, also have toxins.
Leaves are most dangerous when wilting (i.e. a branch comes down during a storm), but fallen autumn leaves are also toxic for 30 days or so and should be removed from pastures.