The collection of blood from pregnant mares for production of the hormone equine chorionic gonadotropin (eCG), also called PMSG, is much debated. This hormone is widely used to enhance reproductive performance and management of dairy and beef cattle, sheep, goats, and pigs kept under intensive housing systems. eCG is extracted from the blood of brood mares between days 40–120 of gestation.  FEEVA and FVE members provided information on this practice which led to a publication reviewing the process of blood collection for eCG extraction and provides recommendations for ensuring mare welfare.

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