Developmental Hurdles That Can Compromise Pregnancy during the First Month of Gestation in Cattle

Several key developmental events are associated with early embryonic pregnancy losses in beef and dairy cows. These problems observed at a greater frequency pregnancies generated from in-vitro-produced bovine embryos. This review describes critical that arise during oocyte maturation, fertilization, development, compaction blastulation, cell lineage specification, elongation, gastrulation, placentation. Additionally, discussed potential remediation strategies, but unfortunately, corrective actions not available for several of the being discussed. Further research is needed to produce embryos have likelihood surviving term.