The embryos were later implanted in a ewe, resulting in a pure Marco Polo argali sheep that Schubert named “Montana Mountain King,” the documents show. Semen from Montana Mountain King was used to artificially impregnate other ewes to create a larger and more valuable species of sheep, including one offspring that he reached an agreement to sell to two people in Texas for $10,000, according to the documents.
Male argali sheep can top 300 pounds with horns up to 5 feet long, according to officials, making them prized among some hunters. They are protected under international convention as a threatened species and outlawed for import into Montana to protect native sheep from disease and hybridization.
A person who was not named in court documents shipped 74 ewes of a prohibited sheep species from Minnesota to Schubarth’s ranch to be artificially inseminated with Montana Mountain King semen, the documents show. Offspring that had only a portion of the central Asian sheep’s genetics sold for lesser amounts.
In 2019, Schubarth paid $400 to a hunting guide for testicles from a trophy-sized Rocky Mountain bighorn sheep killed in Montana. Schubarth extracted semen from bighorn sheep testicles and used it to breed large bighorn sheep and sheep crossbred with the argali species, the documents show.