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Pesquisa Veterinária Brasileira
On-line version ISSN 1678-5150
COLODEL, Edson Moleta et al. Poisoning by Erythroxylum deciduum (Erythroxylaceae) in sheep. Pesq. Vet. Bras. [online]. 2004, vol.24, n.3, pp. 165-168. ISSN 1678-5150. http://dx.doi.org/10.1590/S0100-736X2004000300009.
The epidemiological, clinical and pathological aspects of natural poisoning caused by Erythroxylum deciduum fruits in sheep are reported. The outbreak occurred from January to March of 2004, in Lagoa Vermelha county, state of Rio Grande do Sul, Brazil. The poisoning was experimentally reproduced by oral administration of E. deciduum fruits to 5 sheep.Three of them developed neurological signs and died. Poisoning was caused with a single dose of 60g/kg or when the dosage was fractioned into at least 4 doses of 17 g/kg given every 12 hours. The main clinical signs in natural and experimentally poisoned sheep were ataxia, hyperexcitability and muscular tremors which where more pronounced when the animals were moved. At the final stage, dyspnea with abdominal breathing and cyanosis was observed. The most significant alterations found at necropsy were pronounced edema, lung congestion and presence of the fruits or seeds of E. deciduum in the ruminal content of all animals. Histologically, except edema and pulmonary congestion, there were no other significant changes observed.
Keywords : Poisonous plants; plant poisoning; experimental plant poisoning; Erythroxylum deciduum; Erythroxylaceae; sheep.