​Nearly 80 veterinarians from across the United States delivered a letter to Interior Secretary David Bernhardt today condemning the Bureau of Land Management’s proposed surgical sterilization experiments on wild horses from the Warm Springs Herd Management Area in Oregon.

The letter was sent in advance of the BLM’s National Wild Horse and Burro Advisory Board meeting, which starts October 29 in Washington, DC. Members of the board, which advises the BLM on a wide range of wild horse management strategies, are expected to consider the issue of surgical sterilizations as a fertility control option for curbing populations on the range.

The BLM’s proposal entails using an outdated procedure known as “ovariectomy via colpotomy,” where a metal rod-like tool is blindly inserted through a vaginal incision in order to sever and remove the ovaries of wild mares while they remain conscious. Under the BLM’s plan, as many as 25 ovariectomies would be performed each day.

The National Academy of Sciences, in its comprehensive 2013 report on wild horse management to the BLM, specifically advised the agency not to utilize the ovariectomy via colpotomy method given the risks of trauma and infection. The BLM’s proposal aims to quantify the rate of complications from the surgery, including death.

In their letter, the 78 veterinarians urge the BLM to abandon any future plans for the experimental use of the procedure on wild mares. “Not only is ovariectomy via colpotomy far more invasive, inhumane, and risky than other nonsurgical methods of fertility control,” the letter states, “it is also more invasive and inhumane than the techniques that veterinarians use on domestic horses in the rare circumstances where some form of ovariectomy is clinically necessary.”

The letter adds: “This procedure can be accompanied by a high rate of complications—including risks of infection, trauma, post-operative pain, hemorrhage, abdominal adhesions, evisceration, abscess formation, abortion, neuropathies, and even death. The associated risks are exacerbated by the fact that, by the agency’s own admission, the surgeries will be conducted at the agency’s corrals in an operating space that ‘may not be entirely sterile." CLICK HERE to read the entire letter. 

​The BLM’s proposal marks the agency’s fourth attempt since 2016 to undertake these controversial experiments. The AWI, the American Wild Horse Campaign, and The Cloud Foundation secured a preliminary injunction in the fall of 2018 blocking the agency from implementing the experiments after a federal court found serious shortcomings with a previous version of the the BLM’s proposal. However, in May, the BLM issued a new environmental assessment for an ovariectomy via colpotomy study in an attempt to push forward.

A recent AWI-commissioned survey of more than 2,000 adults through The Harris Poll found that an overwhelming 77% of Americans are opposed to the BLM conducting surgical sterilization experiments on wild horses. Federal lawmakers in both the House of Representatives and Senate have called on the agency to rethink this inhumane plan.

Nonprofit organizations are taking to the courts to try to stop an Interior Department project that would sterilize up to 100 wild female horses in Oregon through a procedure the groups deem "dangerous" and "inhumane."

Front Range Equine Rescue, a nonprofit organization that works to stop cruelty and abuse of horses, filed a federal lawsuit in Washington D.C. challenging the Interior Department Bureau of Land Management's project on September 24. The group claims that the project violates a number of laws, including the Wild Free-Roaming Horses and Burros Act and the National Environmental Policy Act.

The American Wild Horse Campaign and the Cloud Foundation, along with two individuals, filed a separate federal lawsuit in Oregon on September 21 claiming the government project violates the First Amendment because it does not allow outside groups to adequately observe the proposed experiment. It also believes the project violates the same laws Front Range Equine Rescue argues in their suit.
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The surgery that the Bureau of Land Management plans to use on the horses is called ovariectomy via colpotomy. In this procedure, veterinarians remove both of the mare's ovaries by making an incision and putting their hands in the mare's abdomen to "blindly feel around for the ovaries." They then use a tool to remove the ovaries through the vagina, according to court documents.

The Bureau of Land Management is conducting the research in an attempt to find ways to control overpopulation of wild horses across the country. About 27,000 wild horses and burros, or small donkeys, can sustainably live on public land designated for wildlife. Right now, about 82,000 wild horses and burros are living on that land, according to Tara Thissell, a spokesperson for the Bureau of Land Management's Burns, Oregon office.

The project will be conducted using a group of 200 horses from the Warm Springs Herd Management Area in Oregon. One hundred of those horses will be a control group, and about 100 horses will receive the surgery, according to Thissell.

In its complaint, Front Range Equine Rescue states, "the surgical procedure is at best risky." Brieanah Schwartz, government relations and policy counsel of the American Wild Horse Campaign, said the procedure is "very rarely used on domesticated mares." In this experiment, it would be used on wild horses.

"There are levels of management of population, which is the concern here, that are much less invasive, much less disruptive, much less potentially cruel and harmful to the horses than pulling out their ovaries with a tool," Front Range Equine Rescue lawyer Bruce Wagman said.

Both Front Range Equine Rescue and the American Wild Horse Campaign believe that a birth control vaccine for horses called Porcine Zona Pellucida (PZP) is one of the more humane ways to help control the wild horse population.

Thissell said that both versions of PZP available have to be administered either every year or every one to two years, which is not sustainable. Every time the vaccine must be administered, the horses have to be captured and rounded up to do so. The Bureau of Land Management does use PZP on some wild horses, but Thissell did not have a specific number of how many wild horses have received the vaccine.
The Bureau of Land Management is working with the US Geological Survey for the research project. The federal agencies were partnering with Colorado State University on the project initially, but after the Bureau of Land Management's environmental assessment regarding the project was publicly released and received thousands of comments, the university withdrew from participation on August 8.
The Bureau of Land Management then released another updated environmental assessment on August 22, which received about 10,000 comments.

The agency has attempted to use this surgical procedure on mares before.
In 2016, it proposed a research project that would have used this procedure along with two other procedural options. Both Front Range Equine Rescue and the American Wild Horse Campaign legally challenged the agency's project in 2016, and it ended up not going through with it.
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The Bureau of Land Management plans to begin rounding up horses for this research project in October. Procedures on mares could begin as early as November.

Source: CNN