Olsen J D, Anderson T E, Murphy J C, Madsen G
J Am Vet Med Assoc. 1983 Sep 1;183(5):538-43.
Bur buttercup (Ceratocephalus testiculatus) has not been considered to be poisonous, but the sudden death loss of 150 ewes while grazing it prompted study of the plant. It was found that bur buttercup can be highly toxic to sheep, with a lethal dose being as little as 500 g of green plant for a 45-kg sheep. Clinical signs of bur buttercup poisoning are weakness, depression, diarrhea, labored breathing, anorexia, and occasional fever. Postmortem findings include inflammation and edema of the rumen; hemorrhage in the left ventricle of the heart; congestion of the lungs, liver, and kidneys; and excessive fluid in the thoracic and abdominal cavities.
刺毛茛（Ceratocephalus testiculatus）一直未被认为具有毒性，但150只母羊在食用这种植物时突然死亡，这促使人们对该植物展开研究。结果发现，刺毛茛对绵羊的毒性可能很强，对于一只45千克重的绵羊而言，致死剂量低至500克绿色植物。刺毛茛中毒的临床症状包括虚弱、抑郁、腹泻、呼吸困难、厌食以及偶尔发烧。尸检结果包括瘤胃炎症和水肿；心脏左心室出血；肺、肝和肾充血；以及胸腔和腹腔积液。
