Knust Barbara M, Wolf Paul C, Wells Scott J
Center for Animal Health and Food Safety, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
Am J Vet Res. 2011 Jul;72(7):924-31. doi: 10.2460/ajvr.72.7.924.
To characterize the risk of interactions that may lead to the transmission of Mycobacterium bovis between cattle and white-tailed deer (Odocoileus virginianus) on farms in northern Minnesota.
53 cattle farms in northwestern Minnesota adjacent to an area where bovine tuberculosis-infected cattle and deer were detected.
A semiquantitative deer-cattle interaction assessment tool was used for the 53 cattle herds. Farm risk scores were analyzed on the basis of deer damage to stored feed.
27 (51%) farms reported deer damage to stored cattle feeds within the year previous to the farm visit. A strong association was found between increases in the percentage of land that could serve as deer cover and deer damage to stored feeds on a farm. The total risk score was significantly associated with the probability of a farm having deer damage. By use of a logistic regression model, the total risk score and proportion of nonagricultural land around a farm could be used to predict the likelihood of deer damage to stored feeds.
Management practices on many farms in northwestern Minnesota allowed potential deer-cattle interactions. The on-farm risk assessment tool served as a valuable tool for prioritizing the biosecurity risks for farms. Continued development of biosecurity is needed to prevent potential transmission of bovine tuberculosis between deer and cattle, especially on farms that have a higher risk of deer damage.
描述在明尼苏达州北部农场中，可能导致牛型分枝杆菌在牛和白尾鹿（弗吉尼亚鹿）之间传播的相互作用风险。
明尼苏达州西北部与检测到牛结核病感染牛和鹿的区域相邻的53个养牛场。
对53个牛群使用半定量鹿 - 牛相互作用评估工具。根据鹿对储存饲料的破坏情况分析农场风险评分。
27个（51%）农场报告在农场访问前一年鹿对储存的牛饲料造成了破坏。发现可作为鹿栖息地的土地百分比增加与农场中鹿对储存饲料的破坏之间存在强烈关联。总风险评分与农场发生鹿破坏的可能性显著相关。通过使用逻辑回归模型，总风险评分和农场周围非农业土地的比例可用于预测鹿对储存饲料造成破坏的可能性。
明尼苏达州西北部许多农场的管理做法允许鹿与牛之间存在潜在相互作用。农场风险评估工具是确定农场生物安全风险优先级的宝贵工具。需要持续发展生物安全措施以防止牛结核病在鹿和牛之间的潜在传播，特别是在鹿破坏风险较高的农场。
