Management of mares used in the pregnant mare urine (PMU) collection industry

Note: The AVMA endorses this position statement, which was developed by the American Association of Equine Practitioners (AAEP).

"Through on-site investigations and peer review of ongoing research, the American Association of Equine Practitioners believes the collection of urine from pregnant mares and care of their offspring as prescribed by the recommended Code of Practice* represents responsible management of horses to produce a commodity for the benefit of mankind that should not result in abuse, neglect, or inhumane treatment of horses."

*The AVMA reviewed the 2013 edition of the Recommended Code of Practice for the Care and Handling of Horses on PMU Ranches as developed by the PMU Study Committee and published by Manitoba Agriculture and Ayerst Organics (available at: