What To Look For When Your Horse Has Eaten Poisonous Plants(Plant associated bacterial toxins)

By Asst Editor Jason D, on March 25th, 2011

Corynetoxins:

Corynetoxins are toxins produced by the bacteria Rathayibacter toxicus. This bacterium normally lives in the soil but it can sometimes infect the seed heads of certain grasses. The bacterium gains entry to the seed head by adhering to a parasitic nematode that infects the seed head.

The nematode, Anguina funesta, forms a . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants(Plant associated bacterial toxins)

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What To Look For When Your Horse Has Eaten Poisonous Plants(Red clover and alsike clover)

By Asst Editor Jason D, on March 25th, 2011

The toxins associated with red clover and alsike clover poisoning are not presently known. There is some evidence that the toxic effects may be caused by a mycotoxin-producing fungus that is commonly associated with these clovers.

The horse seems to be the only animal species susceptible to poisoning by red clover and alsike clover. . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants(Red clover and alsike clover)

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What To Look For When Your Horse Has Eaten Poisonous Plants(Chillagoe horse disease)

By Asst Editor Jason D, on March 25th, 2011

The ingestion of the crotalarias known as trefoil rattlepod and Chillagoe horse poison can induce severe ulceration on the lining of the oesophagus and the upper part of the stomach in horses.

Horses will readily eat these species of crotalaria and may selectively graze the plants even when other forage is available. Horses are . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants(Chillagoe horse disease)

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What To Look For When Your Horse Has Eaten Poisonous Plants (Crofton Weed, Mist Flower and Other Toxins)

By Asst Editor Jason D, on March 18th, 2011

Crofton weed and Mistflower:

Crofton weed is a significant pasture weed in Australia and it is highly toxic to horses. The toxin that causes poisoning in horses has not yet been identified. Regular ingestion of the weed causes chronic lung disease and the condition has been reported in horses in Australia and in several . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants (Crofton Weed, Mist Flower and Other Toxins)

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What To Look For When Your Horse Has Eaten Poisonous Plants(Grasses)

By Asst Editor Jason D, on March 17th, 2011

Nutritional Secondary Hyperparathyroidism or ‘big head’:

Alcohols and Acids:

Introduced tropical grasses that contain soluble oxalates are associated with a condition in Australian horses known as nutritional secondary hyperparathyroidism or ‘big head’.

This condition is primarily a problem in the northern areas of Australia where introduced tropical grasses are most common.

Horses . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants(Grasses)

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What To Look For When Your Horse Has Eaten Poisonous Plants(Cardiac glycosides)

By Asst Editor Jason D, on March 17th, 2011

Cardiac glycosides are found in several plant families. Cardiac glycosides are extremely toxic but poisoning is relatively uncommon in horses because the plants are generally unpalatable.

Cardiac glycosides disrupt normal heart function by inhibiting an important enzyme called Na+ /K+ ATPase. The enzyme regulates the levels of sodium ions (Na+ ) and Potassium ions . . . → Read More: What To Look For When Your Horse Has Eaten Poisonous Plants(Cardiac glycosides)

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