Veterinarians have euthanized those horses in the most severe condition with a poor prognosis for recovery. Autopsies were performed on three of the dead horses at the facility, with additional horses and samples sent to the Veterinary Diagnostic Laboratory at Colorado State University in Fort Collins.
“As a precaution, we have quarantined the facility and will not ship animals out this week,” said Fran Ackley, BLM Colorado Wild Horse and Bureau Program Lead. “We are working with a veterinarian to determine the cause of the illness and prevent any potential spread to other wild horses at the facility.”
There is no estimate of when the lab analysis will be completed. In addition to the autopsies, the BLM sent water and hay samples to a lab for testing. The horses and burros are currently being fed hay from a different source as a precaution.
The BLM will release additional information as it becomes available.