Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2024
Intoxication of dairy cows in Uruguay by ingestion of cocklebur (Xanthium strumarium) seeds in sorghum silage.
СтатьяНазвание и аннотация: Перевод в очереди
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Sosa Santiago, Capelli Alejandra, Corro Ana C, Dutra Fernando, García Y Santos Carmen
Аннотация
The ingestion of cotyledons or seeds of cocklebur (Xanthium strumarium) causes poisoning as a result of acute liver failure. Here we describe a spontaneous outbreak of X. strumarium toxicity in dairy cows in Uruguay. The outbreak occurred in the winter when the cows were fed sorghum silage contaminated with X. strumarium seeds. Clinical signs of depression, anorexia, paddling, opisthotonos, muscle tremors, sternal recumbency, and death were observed 2-12 h following ingestion. Of 160 Holstein cows, 30 (19%) animals were ill, and 6 (4%) died. At autopsy, the liver had a diffuse mottled appearance with intercalated red and yellow areas. Histologically, centrilobular hemorrhagic coagulative necrosis was found. The diagnosis of this natural outbreak of intoxication was based on the clinical signs observed, finding the fruits of X. strumarium in the silage, and the characteristic macroscopic and histologic lesions.