Invasive Species Compendium

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Abstract

Natural and experimental poisoning of cattle by Enterolobium contortisiliquum pods (Fabaceae Mimosoideae) in Central-Western Brazil.

Abstract

Enterolobium contortisiliquum pods are commonly identified as being the cause of abortions and photosensitivity in cattle. This paper describes the clinical and pathological aspects of a natural outbreak of hepatogenous photosensitization by the pods of E. contortisiliquum in Brazil and the results of experimental poisoning in 3 bovines. The history of natural poisoning was obtained at the site of the outbreak. Clinical examinations were conducted and hepatic enzymes were analysed. A post-mortem examination was conducted at the outbreak location on a cow that had died. Several samples were collected from the animal's internal organs to carry out histopathological examinations. E. contortisiliquum pods were given to cows in order to reproduce the disease. The natural poisonings were characterized by photosensitization and aborted young. E. contortisiliquum photosensitization was not experimentally reproduced, but the animals fell sick and recovered after 52 days.