Toxic Plants Flashcards
What are the main clinical signs associated with wild cherry toxicity?
Exercise intolerance, down, down with seizures, dead
Describe the pathogenesis of wild cherry toxicity in cattle.
Blood-oxygen is irreversibly bound to hemoglobin resulting in venous blood being bright “cherry” red
What is the toxin responsible for wild cherry toxicity?
Cyanide (Prussic acid)
What is the onset time of wild cherry toxicity?
15-20 minutes
What is the toxic dose of wild cherries?
1-5 lbs for 1200 lb cow
How to diagnose wild cherry toxicity
Clinical signs, history of exposure, presence of wild cherry leaves in rumen on necropsy
What is the treatment for wild cherry toxicity?
Sodium thiosulfate/nitrate
-100-250 mL IV
-from reconstituted bulk powder
When are wild cherry leaves the most likely to cause clinical problems?
When the leaves are wilted and young- after fence rows are being replaced or after a thunderstorm causing trees to be down or limbs broken down
What are the clinical signs and organ affected during japanese yew toxicity?
Acute death due to cardiac arrest
What is the onset time of japanese yew toxicity?
1-3 hours
What is the toxic dose of japanese yew toxicity?
1 lb/1200 lb cow
When are japanese yew plants the most toxic?
Older leaves
-usually occurs due to suburban encroachment on farmland, or cattle tearing into neighbors yards
What is the toxin responsible for japanese yew toxicity?
Taxine
What are the main clinical signs of buckeye toxicity?
Goose stepping (slilted gait), down, and hyperesthesia
What is the main organ affected in buckeye toxicity cases?
The brain- neurologic signs similar to grass tetany common