CORALLOCYTOSTROMA-INFECTED MITCHELL GRASS POISONING IN CATTLE
 
Description    Mitchell grass (ASTREBLA spp.) is a common pasture grass in Australia. The fungus CORALLOCYTOSTROMA can produce stromata (which appear as hard, dry, white coral-like structures 0.5-2.5 cm in diameter) that are attached to the Mitchell grass. Cattle grazing infected grass can develop blindness and rapid progression to death or a less severe syndrome of depression, weakness, and ill thrift. Known as 'black soil blindness' in affected areas. The mild form of this disease without blindness was experimentally reproduced.
 
Species   Bovine
 
Signs   Anorexia, Blindness, Disoriented, Dullness, Generalized weakness, Inability to stand, Sudden death, Underweight, poor condition, thin, emaciated, unthriftiness, ill thrift, Weight loss
 
References   Jubb TF. Black soil blindness: a new mycotoxicosis of cattle grazing corallocytostroma-infected mitchell grass (astrebla spp). Aust Vet J 1996;73:49
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