O'Leary Niall W, Byrne Daire T, Garcia Pauline, Werner Jessica, Cabedoche Morgan, Shalloo Laurence
Land Management and Systems, Faculty of Agribusiness and Commerce, Lincoln University, Lincoln, 7647 Christchurch, New Zealand.
Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, P61 C997 Cork, Ireland.
Animals (Basel). 2020 Apr 11;10(4):661. doi: 10.3390/ani10040661.
Accelerometer-based mobility scoring has focused on cow behaviors such as lying and walking. Accuracy levels as high as 91% have been previously reported. However, there has been limited replication of results. Here, measures previously identified as indicative of mobility, such as lying bouts and walking time, were examined. On a research farm and a commercial farm, 63 grazing cows' behavior was monitored in four trials (16, 16, 16, and 15 cows) using leg-worn accelerometers. Seventeen good mobility (score 0), 23 imperfect mobility (score 1), and 22 mildly impaired mobility (score 2) cows were monitored. Only modest associations with activity, standing, and lying events were found. Thus, behavior monitoring appears to be insufficient to discern mildly and moderately impaired mobility of grazing cows.
基于加速度计的活动能力评分主要关注奶牛的躺卧和行走等行为。此前报告的准确率高达91%。然而，研究结果的重复性有限。在此，对先前确定为活动能力指标的测量值进行了研究，如躺卧时间和行走时间。在一个研究农场和一个商业农场，使用腿部佩戴的加速度计，在四项试验（分别为16头、16头、16头和15头奶牛）中对63头放牧奶牛的行为进行了监测。对17头活动能力良好（评分为0）、23头活动能力一般（评分为1）和22头活动能力轻度受损（评分为2）的奶牛进行了监测。仅发现与活动、站立和躺卧事件存在适度关联。因此，行为监测似乎不足以识别放牧奶牛轻度和中度受损的活动能力。
