The aim of this study was to monitor cardiac adaptations in mares from the fifth to the ninth month of gestation.
Materials and Methods: Echocardiographic parameters of 10 Quarter Horse mares were established, followed during different gestational months, all kept in a semi- extensive regime, with ages ranging from 3 to 17 years. Data were collected in five stages, all with resting animals. The mares were evaluated at 5 months of gestation, at 6 months, at 7 months, at 8 months and at the last 9 months of gestation, seeking to establish a comparative parameter of possible adaptations.
Results: The results passed through statistical analysis by the Dunett’s Multiple Test and analysis of variance one way ANOVA, considering P<0, 05 as statistical significant. 12 Parameters (85, 72%) showed statistical significance (P< 0, 05) and 2 parameters (14, 28%) didn’t showed statistical significance (P >0, 05).
Conclusion: It was possible to observe that in the evaluated mares, the echocardiography was efficient in determining the cardiac functional indices acquired at different gestational ages.