Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, 2357 Main Mall, Vancouver V6T 1Z4, Canada.
J Dairy Sci. 2009 Dec;92(12):6052-5. doi: 10.3168/jds.2009-2361.
Increased rumination in dairy cattle has been associated with increased saliva production and improved rumen health. Most estimates of rumination are based on direct visual observations. Recently, an electronic system was developed that allows for automated monitoring of rumination in cattle. The objective was to validate the data generated by this electronic (Hi-Tag, SCR Engineers Ltd., Netanya, Israel) rumination monitoring system. Assessments of 2 independent observers were highly correlated (r = 0.99, n = 23), indicating that direct human observations were suitable as the reference method. Measures from the Hi-Tag electronic system were validated by comparing values with those from a human observer for fifty-one 2-h observation periods from 27 Holstein cows. Rumination times (35.1 +/- 3.2 min) from the electronic system were highly correlated with those from direct observation (r = 0.93, R(2) = 0.87, n = 51), indicating that the electronic system was an accurate tool for monitoring this behavior in dairy cows.
奶牛反刍增加与唾液分泌增加和瘤胃健康改善有关。大多数反刍估计都是基于直接的视觉观察。最近，开发了一种电子系统，可以自动监测奶牛的反刍。目的是验证这种电子（Hi-Tag，SCR Engineers Ltd.，Netanya，以色列）反刍监测系统生成的数据。两位独立观察员的评估高度相关（r = 0.99，n = 23），表明直接的人工观察适合作为参考方法。通过将电子系统的测量值与人工观察值进行比较，从 27 头荷斯坦奶牛的 51 个 2 小时观察期的数据进行验证。电子系统的反刍时间（35.1 +/- 3.2 分钟）与直接观察的结果高度相关（r = 0.93，R(2) = 0.87，n = 51），表明电子系统是监测奶牛这种行为的准确工具。
