North central Minnesota CWD management zone (DPA 604)

• General information
• Hunting information
• Sampling location information
• Carcass information
  • Dumpsters for carcass disposal
  • Meat processor options
  • Taxidermist information for sampling trophy deer

2019 hunting information

CWD sampling and testing

CWD sampling is mandatory for all deer harvested in this CWD management zone. CWD sampling stations are available during all seasons.

• During the firearms seasons, hunters must present all deer in person at a CWD sampling station for mandatory sampling ; fawns must be presented to confirm age and will only be tested upon voluntary submission. A special carcass tag will be attached to the deer to verify sampling and/or age.
• During archery and muzzleloader seasons, hunters must submit the heads of all adult deer (1-year-old or older) at one of the self-service sampling locations.
• You will need to provide the township, section and range of your harvest location.

The time it takes to receive test results for deer sampled for CWD will vary depending on the number of samples collected. Process your deer as you normally would. Keep processed deer separate and identifiable until test results are received.

Test results for all deer that are sampled will be available online at mndnr.gov/cwdcheck.

What can I harvest?

• Either sex with a regular license.
• May use a Statewide (A) or a Late Southeast (B) license during any firearms season.
• In the north central CWD management zone DPA 604, hunters may harvest only one buck per year.
• Hunters may harvest an unlimited number of antlerless deer by purchasing an unlimited number of disease management tags for $2.50 to take antlerless deer. These tags may be used instead of bonus permits to take antlerless deer in this area.

Is this area affected by carcass movement restrictions?

Yes. Deer carcass movement restrictions apply during all seasons for all deer, including fawns.

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2019 sampling locations for archery, muzzleloader and firearms

Sampling stations in the north central CWD management zone (604)

• Archery and muzzleloader seasons: All locations have self-service sampling stations available 24/7 during archery, muzzleloader and unstaffed portions of the firearms seasons. Look for an orange "CWD Sampling Station" sign and black barrel (examples: image 1; image 2).
• Firearms seasons: Locations will be open from 9 a.m. to 7 p.m. during Nov. 9-24.

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What do I do with my carcass after sampling?

After providing a deer sample, deer carcasses must be disposed of properly to meet deer carcass movement restrictions. 

To help hunters comply with these legal carcass movement restrictions, the DNR set up dumpsters where hunters can dispose of carcasses (head and spinal column) after quartering or butchering so they can leave the CWD areas immediately.

Alternately, hunters may work with meat processors within the zone; some options are listed below.

Dumpsters for carcass disposal

Dumpster locations are listed when they are available for the hunting season.

Meat processor options

The following is a list of some meat processors in the area. Use at your own discretion and call for availability first.

Taxidermist information for sampling trophy deer

The taxidermists listed below are trained in sample collection. If you bring your trophy deer to one of these taxidermists to have it caped or mounted, the taxidermist will collect the lymph node samples and deliver them to the DNR for testing. If you use one of these taxidermists, you will satisfy the mandatory sampling requirements. Once your deer is caped and the skull plate removed, you can bring the cape and cleaned skull plate with attached antlers to your taxidermist of choice for final mounting.

Using a taxidermist for sampling will result in a longer turnaround time for your CWD test results.

Other taxidermists in this area can be used if the caped out head is brought to a sampling station.

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Other zone information

Summary of necropsy findings for CWD-positive deer in Crow Wing County

The Veterinary Diagnostic Laboratory (University of Minnesota, St. Paul) received the deer on Feb. 11 for necropsy. After allowing the deer to thaw, Dr. Arno Wuenschmann performed the necropsy on Feb. 14. The deer weighed 100 pounds and was so emaciated that there were no internal fat stores remaining. The deer’s bone marrow was red and gelatinous, a further indication of potentially fatal poor nutritional state. There was also evidence of pneumonia that was caused by the aspiration of food. However this aspiration pneumonia was not deemed of sufficient severity to have caused the animal’s death based on the small portion of lung that was affected. Furthermore, one of the compartments of the stomachs (abomasum) was distended and impacted with food. Additional IHC testing at Michigan State University of the brain stem (the obex) also found CWD on Feb. 27. 

Dr. Wuenschmann’s conclusion is that the animal had CWD based on the detection of abnormal prion protein in the obex by immunohistochemistry, which corroborated the previous diagnosis of CWD made at Colorado State University. Both emaciation and aspiration pneumonia are common findings in deer with CWD.

Complete details are available in the Veterinary Diagnostic Laboratory necropsy report.

For questions related to the postmortem examination of this case, please contact: Dr. Arno Wuenschmann, DVM, ACVP, University of Minnesota: 612-625-8787 or [email protected].

For questions related to any other aspects of this case, please contact: Dr. Michelle Carstensen, Wildlife Health Program Supervisor, Minnesota Department of Natural Resources: 651-539-3309 or [email protected].

FAQs about the CWD-positive deer

What was the timeline after the deer was reported?

• Jan. 23, 2019: An adult female white-tailed deer was found dead near Merrifield by a private citizen and reported to a DNR Conservation Officer. The officer brought the carcass to the Brainerd Wildlife Office for CWD testing. The deer was noticeably thin. Retropharyngeal lymph nodes were extracted and stored frozen until they could be shipped to the Wildlife Health Program staff in Forest Lake.  
• Feb. 4, 2019: The Crow Wing sample was shipped in a batch of 207 deer samples, mostly from a late season hunt in Winona County, to Colorado State University for testing.
• Feb. 8, 2019: The DNR was notified that this deer tested as “suspect” on the ELISA screening test.
• Feb. 14, 2019:  CWD was confirmed by the immunohistochemistry (IHC) test.  
• Feb. 15, 2019: The DNR announced the findings publicly.

Why did the DNR test this deer?

Because of the CWD-positive captive cervid facility, there is a high degree of public awareness about potentially sick deer in the area. Given the deer was found dead very close to the positive farm, it was important to test this animal for CWD.

What was the sex and age of the deer? 

The deer was an adult female. Since the deer was frozen solid, a section of the lower jaw was cut off to thaw and a front incisor was extracted. This tooth will be sent to Matson’s Laboratory (Manhattan, MT) for aging by cementum annuli technique to provide an age estimate of this deer.

What happened to the carcass? 

After sampling, the carcass had been placed in a dumpster at the Brainerd Wildlife Office, to await transfer to a lined landfill, which is an approved method for disposal of deer carcasses.

What did you do when the test results came back? 

Once the preliminary test results were received on Feb. 8, the Wildlife Health Program staff contacted Brainerd Wildlife staff to inquire if the carcass was still available. The dumpster had not been picked up and the frozen carcass was still there. The carcass was extracted from the dumpster and routed to the University of Minnesota’s Veterinary Diagnostic Lab for a full necropsy.

What happened to the deer after the necropsy?

The carcass was placed in the alkaline digester at the University of Minnesota.

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