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4-16-2002

I thought this time-line and attempt at CWD eradication may be enlightening to some of you. Finding CWD on the west slope in Colorado was a surprise, and came as a result of a decision to depopulate a game farm simply because it contained domestic elk. Finding 2 affected deer in the facility led to sampling outside the facility. Finding 2 more free-ranging deer led to collection of an additional 18 deer, of which one was found affected. These 5 deer have led CDOW to attempt to eradicate CWD in this area by killing as many deer and elk as possible within 5 miles of the game farm. The operation is underway this week. If any place has a chance for success at "nipping the disease" early, this may be it. It may take a few years of monitoring and surveillance to find out if it has been successful.

Thomas J. Roffe, PhD, DVM
USGS-BRD
Northern Rocky Mountain Science Center
FWP Bldg, 1400 S. 19th Ave.
Bozeman, MT  59718-5496
T: 406-994-5789
F: 406-994-4090
Cell: 406-539-4955


 Supporting Documents:

4/15/2002
Division of Wildlife 

CWD FACT SHEET

This is a timeline of events leading to the Division of Wildlife's culling of wild deer and elk on the Western Slope of Colorado to control the spread of chronic wasting disease.

 -The Division of Wildlife made the decision in Jan. 2002 to depopulate all wild deer and elk enclosed within Motherwell Ranch, a private captive wildlife facility northeast of Meeker and south of Hayden (12 miles east of Hamilton), because the facility contains domestic elk. The wild deer and elk were either trapped in the facility when fences were built last summer, or found their way over or beneath the fences once the facility had been enclosed. The DOW has a long-standing policy that wild animals that have been enclosed with captive animals should not return to the wild because of concerns about their contracting disease from the captive animals. 

-From Jan. 9-13, the DOW conducted a public hunt within the fenced facility and killed 176 wild deer and elk. All deer and elk killed by the public were tested.

 -From Jan. 14-31, Motherwell ranch employees guided public hunters and killed an additional 50 wild deer and elk. All deer and elk killed by the public were tested for CWD. 

-From Feb. 1-16, DOW employees killed an additional 147 wild deer and elk on the ground and 33 wild deer and elk from a helicopter. All deer and elk picked up were tested for CWD.

 -Two wild deer from within the Motherwell fenced facility were found to have CWD. In both cases, the animals were harvested by public hunters. The DOW then made the decision for DOW employees to do sampling around the Motherwell ranch, with a goal of killing and testing 300 animals. This number was based on statistical analysis done by DOW research and wildlife protection staff, and chosen based on deer per square mile and to have a sound statistical sample to determine if the disease exists in the area.

-From April 1-3, 16 DOW employees and three U.S. Department of Agriculture Wildlife Service employees with a helicopter killed 308 deer within a five-mile radius of the Motherwell Ranch from the ground and air, and seven from within the facility.

 -On April 8, two more CWD-positive deer were found among those 308 killed the previous week outside the Motherwell facility. Following guidelines from the DOW's Northeast Region, where CWD is endemic, DOW personnel on the ground killed 18 additional deer in the area where the two positive animals were found in the wild. This was done on the afternoon of April 9 and finished the morning of April 10. Preliminary testing of those 18 animals late Friday found one with CWD.

 -At the Wildlife Commission workshop held in Greeley on April 11, the Commission was briefed in detail on the DOW's past actions to contain CWD and what was planned for the next week.

 -On April 12, after much discussion between the DOW's wildlife protection and public service staff and its leadership team, the DOW made the decision to remove more deer specifically from within the five-mile radius where the deer with CWD had been found in the wild. However, the control effort was not for sampling as was done previously, but to kill as many wild deer and elk as possible in an attempt to eradicate CWD from within the area before deer and elk start migrating back to their summer range.

-Beginning April 15, DOW staff, U.S. Department of Agriculture Wildlife Service personnel and volunteers from the Mule Deer Association, the Rocky Mountain Elk Foundation, the Traditional Bowhunters Association, the Colorado Outfitters Association and the Colorado Bowhunters Association will kill as many deer and elk as possible, ending on Friday, April 18 All of the deer and elk will be tested for CWD. The role of the volunteers is to assist with hauling the animals from the field to the staging area, where all animals will be tested for CWD and then incinerated.

 Division of Wildlife <http://wildlife.state.co.us>

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