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Wyoming musters remove 1200 horses

November 25, 2009

The lucky ones: a group of stallions is released back to the McCullough Peaks Herd Management Area.

Wild Horse specialist Scott Fluer administers PZP to a mare with a jab stick. © BLM

About 1800 wild horses have been gathered in Wyoming in a month-long operation, with 1200 to be offered for adoption.

The Bureau of Land Management in Wyoming targeted seven herd management areas (HMAs) within its Cody, Lander, Rawlins and Worland field office areas.

The gathers began on October 16 and ended on November 14.

About 1800 wild horses were gathered from the McCullough Peaks HMA, the Fifteenmile HMA, and the Red Desert Complex, which includes the Green Mountain, Stewart Creek, Crooks Mountain, Antelope Hills and Lost Creek HMAs.

"Of these, more than 1200 were shipped to wild horse facilities in Rock Springs, Wyoming, and Canon City, Colorado, where they are being prepared for adoption. The remaining horses were returned to their former ranges," the bureau said.

The majority of breeding-age mares selected for release back to their former ranges were treated with Porcine Zona Pellucida (PZP), a fertility control vaccine.

It is anticipated that PZP will slow horse population growth rate and reduce the frequency of future gathers.

Many of the horses to be offered will receive some training, including through programmes in which prison inmates work with the horses as part of their rehabilitation.



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