Agricultural and Biological Sciences
8 years ago

Equine embryos found to linger in oviduct, delaying uterine entry

Theriogenology
Location of equine oviductal embryos on Day 5 post ovulation and oviductal transport time of Day 5 embryos autotransferred to the contralateral oviduct
J.A. Weber, G.L. Woods, Javier Aguilar

Paper Summary

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Equine embryos are mostly found near the ampullary-isthmic junction in the oviduct before entering the uterus on Day 6 post ovulation. The transport of embryos through the oviduct is rapid, with most embryos staying near the junction until just before entering the uterus. When Day 5 embryos were transferred to the opposite oviduct, they took longer to reach the uterus, suggesting a potential interference with the normal transport process.