What are Most Common Diseases Affecting Columbia Blacktails?

Prevalence of Chronic Wasting Disease (CWD)

Chronic wasting disease (CWD) is a major concern for Columbia blacktails. This neurodegenerative disease affects deer, elk, and moose, causing weight loss, abnormal behavior, and ultimately death. In Oregon, CWD has been detected in several blacktail deer herds, with reported infection rates ranging from 1.5% to 12.1%. To minimize the risk of CWD transmission, hunters should avoid consuming deer that appear sick or have signs of the disease, such as excessive salivation, drooping ears, or loss of body condition.

Management and Control of Bovine Tuberculosis (TB)

Bovine tuberculosis (TB) is another disease affecting Columbia blacktails. This bacterial infection can be transmitted through direct contact with infected animals or contaminated food and water sources. In Oregon, TB has been detected in several deer herds, with reported infection rates ranging from 0.5% to 2.5%. Effective management strategies include testing deer herds, maintaining a healthy deer population through habitat management, and implementing biosecurity measures to prevent the introduction and spread of TB.

Parasitic Infections in Blacktail Deer

Echinococcus granulosus is a tapeworm that can infect Columbia blacktails, causing cystic echinococcosis (CE) or “hydatid disease.” This parasitic infection can lead to serious health issues in deer, including organ failure and death. In Oregon, CE has been detected in several deer herds, with reported infection rates ranging from 1% to 5%. To minimize the risk of CE transmission, hunters should avoid consuming organs such as livers and lungs, which are more likely to contain the parasite.