Veterinary advice should be sought before applying any treatment or vaccine.

Coyotillo poisoning in goats is caused by ingestion of coyotillo (Karwinskia humboldtiana), a woody shrub which is toxic to animals and humans. Most cases of poisoning occur in the winter, when plants are abundant with fruit and other forage.

Consumption of as little as 0.3% of the goat’s body weight of the fruit is lethal. Losses of more than 1,000 goats caused by coyotillo poisoning have been reported on Texas ranches. The plant contains polyphenolic compounds which affect the goat's nervous system.

Symptoms

High stepping gait with overflexion of joints
Hypersensitivity to touch and sounds
Increased alertness
Tremors
Humpbacked posture
Gait disturbances
Shortened stride
Marked weakness
Loss of stretch reflexes
Stumbling
Recumbency
%

Diagnosis

  • History
  • Clinical signs
  • Physical Exam
  • Laboratory tests
  • Necropsy

Treatment

Management: Remove goats from pastures contaminated with Coyotillo plants

Prevention

  • Goats should not be turned into infested areas for grazing when the plant is in fruit.

Article Reference

Seasonality

WinterSpringSummerAutumn

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