In response to "Minnesota's wild deer are being threatened by 'farms' " (Opinion Exchange, Aug. 27), a more accurate title would have been "Disease spreading from the 'wild herd' threatens Minnesota's deer farms."
The author states, "The obvious way to stop the spread of [chronic wasting disease] is to ban deer farming in Minnesota" and "CWD spreads primarily — maybe exclusively — from captive deer in these farms into the wild herd."
Yet, when one looks at the epidemiological reports on current infected deer farms in Minnesota, where the movement of animals is traced back to all related farms, it shows a "dead-end" of an infection source.
Deer farms in Minnesota have conducted mandatory testing since 2004, involving several generations of deer. These farms have obviously been infected from an outside source, most likely from a contaminated feed source brought into the farm from outside the fence where the wild herd wanders through grain and hay fields unchecked, and untested in much of the state.
These farms are nothing more than "canaries in the coal mine" — they show an infection in an area because they test 100% of their animals for CWD. The state agencies usually don't test in an area, or test very little, until a farm becomes positive. Is this the "chicken or egg" effect?
United States Department of Agriculture (USDA) data from 2012 showed that wild deer had four times the infection rate of CWD than did deer on farms. So, where is the real problem?
The article seems to advocate for the turnover of deer farms to the DNR. Yet prior to 2002, the DNR did manage deer farms. Their management was poor, lacking any record keeping and little physical inspections of facilities or animals. The deer industry was properly transferred to the Board of Animal Health which is staffed by veterinarians who have expertise in animal disease issues.
If the question of deer farming is "truly" a disease issue, then who should manage them — veterinarians or game wardens?