2020-01-292020-01-292020-01-292008-11-301982-0151http://localhost:8080/handle/prefix/899For this study, embryos, fetuses and attached membranes of 23 concepts of mares from Frigorífico Miramar - Pelotas RS were used. Embryos and fetuses were analyzed for size and external developmental characteristics to analyze gestational age. The attached membranes were weighed and measured for later correlation with gestational ages. The results obtained so far indicate that the embryonic and fetal development of horses is very fast in the early stages of development, this being a critical period of placental implantation and the beginning of the endocrine activities of the placenta. The biometric data related to the umbilical cord are not progressive according to development, having shown great variations among the animals studied.Acesso AbertoMedicina VeterináriaBiometriaEquino: embriãoPlacentaMembranas embrionáriasCNPQ::CIENCIAS AGRARIASArtigo de Evento