The team is contacting experts in other states to determine if lowering reservoir levels could help control the spread of the mussels.
State Commissioner of Higher Education Clayton Christian announced Thursday that he and Engstrom reached the decision after “careful discussion and consideration.”
Biologists say 900 would need to be removed just to stabilize population growth.
The infected bulls were identified during a voluntary whole-herd test and the ranch has been placed under quarantine.
USDA’s National Agricultural Statistics Service has released data for the basis of increasing the minimum wage for H-2A workers by 5.44 percent in Washington and Oregon next year.