By Staff Reporter |
New expert analysis warns that the Arizona government’s plan to reduce the Salt River wild horse population to 120 horses could prove devastating to their continued existence.
The herd currently has approximately 274 horses, nearly half of what it was at its peak in recent decades.
Dr. E. Gus Cothran, equine population geneticist and professor emeritus at Texas A&M University, issued a statement expressing concern that the plan may prove detrimental to the future existence of the wild horses. Cothran says wild horse populations require 150 to 200 horses minimum for long-term genetic health, though no number can provide an exact guarantee on a herd’s survival.
“At the most basic level, 150 to 200 animals is a minimum number,” said Cothran. “This is the number that, if everything goes right and only population genetics is involved, should maintain genetic health for 200 years or so.”
Cothran said genetic testing of just 20–25% of the herd would allow for insight into the herd’s genetic health: approximately 55 to 70 horses.
Citing that assessment, advocates and community members have raised concerns that a removal of the horses would have the potential for permanent and devastating impact to the wild horse population.
The Friends of the Salt River Horses have asked Gov. Katie Hobbs to pause the permanent removals pending an independent genetic study and scientific review.
“Once that diversity is lost, it is gone forever!” said Friends of the Salt River Horses in a statement. “Before a single horse is permanently removed, Arizona should demonstrate through independent science that the remaining herd will be genetically healthy and capable of surviving for generations. Friends of the Salt River Wild Horses calls upon Governor Hobbs to halt removals, to do the science, and respect the public process.”
Some contend the Arizona Department of Agriculture’s (AZDA) plan to remove these horses violates the Salt River Wild Horse Protection Act passed in 2016. The act empowers the state to exercise discretionary management of the horse population, with protections against the obstruction, chase, capture, removal, or euthanasia of the horses without government permission.
AZDA awarded the management contract to the Salt River Wild Horse Management Group (SRWHMG). The company is operating on a goal to reduce the herd size over the next five years through natural attrition, fertility control, and manual relocation, per a press release issued by AZDA in February.
SRWHMG has already been involved in population reduction efforts. They reduced the population from 450 horses using fertility control methods.
AZDA promised that all removed wild horses were only permitted for the relocation to approved sanctuaries — no horses may be donated, traded, slaughtered, or sold.
According to AZDA, the contract procurement process included input from an assessment panel consisting of veterinarians, a rangeland management scientist, and a federal wild horse manager.
AZDA Director Paul Brierley said the management plan represented the responsible promotion and protection of the “Salt River experience.”
SRWHMG President Simone Netherlands called the plan “a pragmatic compromise.”
Last month, the Arizona legislature failed to pass a proposed three-year moratorium on the herd reduction and mandatory study on the Salt River horses’ genetic diversity. The House passed the bill, SB 1199, but the Senate declined to hear it.
Republican Reps. Juan Ciscomani (AZ-06) and David Schweikert (AZ-01) were among the founding members of the bipartisan Congressional Wild Horse Caucus last year.
These and other members of Congress have been pushing for the passage of the Wild Horse and Burro Protection Act, HR 4356, which would eliminate helicopter roundups.
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