Obstrução intestinal em bovinos associada ao consumo de Stylosanthes sp. (Fabaceae Papilionoideae)

Pesquisa Veterinária Brasileira

Daniel G. Ubiali²  Rafael G.f. Silva¹  Leonardo P. Oliveira¹  Luiz G. De Moraes¹  Flávio H.b. Caldeira²  Caroline A. Pescador¹  Marcos De A. Souza¹  Edson M. Colodel¹ 

[1] ,Universidade Federal de Mato Grosso Faculdade de Agronomia, Medicina Veterinária e Zootecnia Programa de Pós-Graduação em Ciências VeterináriasCuiabá MT ,Brasil

关键词: Plants causing mechanical injury;    Stylosanthes sp.;    Fabaceae Papilionoideae;    cattle diseases;    intestinal obstruction;    beef cattle;    Plantas que causam lesões mecânicas;    Stylosanthes sp.;    Fabaceae Papilionoideae;    doenças de bovinos;    obstrução intestinal;    bovinos de corte;   

DOI  :  10.1590/S0100-736X2013000200003

来源: SciELO

【 摘 要 】

The clinical and pathological findings of intestinal obstruction caused by phytobezoars in cattle consuming Stylosanthes sp. on three farms in Mato Grosso, Brazil, are described. The morbidity varied from 3.3 to 15% and the mortality was 100%. The animals stayed on pastures with predominance of Stylosanthes sp. for at least 60 days. The overall clinical picture was apathy followed by episodes of diarrhea or reduced feces and separation from the herd. Individual clinical signs were abdominal colic characterized by anorexia, discomfort, gastrointestinal hypomotility, dehydration, increased abdominal size, sweating, vocalization, sternal or lateral recumbence with the head on the flank. The clinical course lasted from 2 to 7 days. At necropsy, duodenal or pyloric obstruction was caused by ovoid phytobezoars of 2-4cm diameter; in the area of obstruction friable intestinal tissue with intense swelling, congestion, edema, and reddish mucosa was found. The rumen, abomasum and duodenum proximal to the site of obstruction was filled with greenish liquid, and absence of food contents was observed distally to the phytobezoars. Histologically, at the site of obstruction, the duodenum exhibited diffuse necrosis of the mucosal surface, thickening of the wall by submucosal edema, neutrophilic infiltration, fibrin deposition, necrosis of smooth muscle fibers, and marked congestion or hemorrhage. Pasture with the predominance of Stylosanthes sp. is a serious problem due to the possibility of phytobezoar formation, thus leading to intestinal obstruction and high mortality rates in cattle.

【 授权许可】

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