Estudo histopatológico da placenta na égua: relação com o metabolismo neonatal e achados da gestação

Abstract

The aim of this study was to determine the relationship between lesions in the placenta histopathology with the clinical findings during pregnancy in the mare, as well as the clinical presentation of the neonatal foal after labor. The study was performed in a farm localized in Bagé-RS, Brazil. Mare’s history were collected and pregnancy were clinically monitored. After the labor, the placenta were submitted to histopathological exam and the foal was evaluated at his first hour of life with clinical examination, hematology and serum biochemistry. Results showed that inflammatory lesion in the placenta was associated to clinical compromise in the foals. Degenerative lesions in placenta do not seem to be related with foal clinical compromise, however seems to be responsible for the development of sub-clinical disturbs, evidenced by the high levels of GGT and AST. The pregnancy monitoring is essential to an early recognition of risk factors to fetal and neonatal viability, however, with the available methods, not all of disturbs can be recognized before labor. Based on the findings of this study, a protocol for pregnancy evaluation, placental and neonatal exam was proposed.