Abstract
The objective of this study was to determinate the occurrence of hepatic lesions caused by migratory large Strongyle larvaes in horses slaughtered in city of Apucarana in state of Paraná. The lesions were diagnostic in post mortem exam by macro and microscopic analysis. From April 2003 to April 2004, 38,363 animals, coming from different regions of Brazil, were examined. The occurrence of granulomas in liver was observed in 14,443 (37.64%), with adhesions and spot in 6,645 (17,32%), and 17,275 (45.03%) without macroscopic lesions. Macroscopic analysis revealed the presence of livers with calcified nodules, the presence of whitish spots, and adhesions in the format of “lines” over the hepatic capsule. No larvae were found in the livers. Hepatic fragments were histologically processed and revealed, by optical microscopy, inflammatory cells with predominance of eosinophils around the granulomas with a moderate amount of macrophages and the presence of fibroblasts.
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