CASSIA, SENNA, POISONING
 
Description    Skeletal muscle degeneration has been seen in cattle eating SENNA OCCIDENTALIS LEGUMINOSAE (coffee senna) or CASSIA OBTUSIFOLIA (sickle pod senna). CASSIA ROEMERIANA (twin-leaf senna) has been associated with disease in cattle and sheep, and produced myopathy in experiments on goats. SENNA OCCIDENTALIS LEGUMINOSAE has also been reported as a cause of myopathy in pigs. Seen mainly in the South and Southwest. Cattle go down, but remain bright and alert until dying a week or 10 days later. Muscle enzymes elevated. Generally in cattle over 1 year old.
 
Species   Bovine, Caprine, Ovine, Porcine
 
Signs   Abnormal proprioceptive positioning, Agalactia, Anorexia, Ataxia, Diarrhea, Dullness, Dysmetria, Dyspnea, Exercise intolerance, Generalized lameness or stiffness, Generalized weakness, Hemoglobinuria or myoglobinuria, Inability to stand, Increased respiratory rate, Lack of growth or weight gain, Paraparesis, Red or brown urine, Reluctant to move, Sudden death, Tachycardia, Tetraparesis, Trembling, Tremor
 
References   Quist EM. Diagnostic Exercise: Equine Rhabdomyolysis. Vet Pathol 2011;48:E52 [Web Reference]
Nicholson SS. Southeastern Plants Toxic to Ruminants. Vet Clin N A Food Anim Pract 2011;27:447 [Web Reference]
Colvin BM. Cassia occidentalis toxicosis in growing pigs. JAVMA 1986;189:423
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