# Mad Cow: Why Deer and Elk? **URL:** \ **Category:** Factual Questions\ **Created:** [March 6, 2001, 2:18pm UTC](https://boards.straightdope.com/t/mad-cow-why-deer-and-elk/56934 "2001-03-06T14:18:25Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![jebert](https://avatars.discourse-cdn.com/v4/letter/j/ec9cab/32.png) [@jebert](https://boards.straightdope.com/u/jebert)\ **Post date:** [March 6, 2001, 2:18pm UTC](https://boards.straightdope.com/t/mad-cow-why-deer-and-elk/56934/1 "2001-03-06T14:18:25Z")
Current thinking is that Mad Cow Disease (BSE) is spread by the practice of using ground up slaughterhouse remains containing prion-infected neural tissue as feed for other cattle. Seems plausible. Our friendly beef industry claims that the US herds are not infected. However, some herds of deer and elk in the US West have chronic wasting disease, a disease similar to BSE. To my knowledge, deer and elk are not naturally cannibalistic. What mechanism can account for the appearance and spread of this disease in deer and elk? Is someone feeding these populations with the same type of meal formerly used in UK? ---
**Author:** ![Alphagene](https://avatars.discourse-cdn.com/v4/letter/a/8e7dd6/32.png) [@Alphagene](https://boards.straightdope.com/u/Alphagene)\ **Post date:** [March 6, 2001, 3:13pm UTC](https://boards.straightdope.com/t/mad-cow-why-deer-and-elk/56934/2 "2001-03-06T15:13:26Z")
The [DNR](http://www.dnr.state.co.us/wildlife/hunt/HunterEducation/chronic.htm) says: > [@](#): > > Experimental and circumstantial evidence suggests infected deer and elk probably transmit the disease, through animal-to-animal contact and/or contamination of feed or water sources with saliva, urine, and/or feces. Chronic wasting disease seems more likely to occur in areas where deer or elk are crowded or where they congregate at man-made feed and water stations. Artificial feeding of deer and elk may compound the problem.