THE DEVELOPMENT AND USE OF EQUIPMENT FOR THE AUTOMATIC RECORDING OF INGESTIVE BEHAVIOR IN SHEEP AND CATTLE
THE DEVELOPMENT AND USE OF EQUIPMENT FOR THE AUTOMATIC RECORDING OF INGESTIVE BEHAVIOR IN SHEEP AND CATTLE
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DOI：
10.1111/j.1365-2494.1981.tb01545.x
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发表时间：
1981-01-01
影响因子：
2.4
通讯作者：
MILNE, JA
中科院分区：
文献类型：
--
作者：
CHAMBERS, ARM;HODGSON, J;MILNE, JA
描述了一种设计成适合羊或牛的设备，该设备自动记录与放牧和反胃有关的下巴运动、拔草时头部的运动以及放牧所花费的时间。该设备成功地与测量放牧行为的其他视觉和机械方法进行了测试。在详细研究中使用的改装设备表明，当拔下一口牧草时，绵羊的头部在纵向平面上的最大加速度是牛和绵羊的两倍，但在奶牛身上不是，随着草皮高度的降低而增加；在三个比较中的两个比较中，羊和牛的下巴运动与头部运动的比率总是大于1，在高个子上大于矮个子。在高个子上的咬合率明显低于矮个子。
A description is given of equipment designed to be fitted to either sheep or cattle and to record automatically information on the jaw movements associated with both grazing and ruminating, movements of the head in plucking mouthfuls of herbage and the time spent in grazing. The equipment was successfully tested against alternative visual and mechanical methods of measuring grazing behavior. The use of modified equipment in detailed studies has shown that the maximum acceleration of the head in a longitudinal plane when plucking mouthfuls of herbage was twice as great in sheep as in cattle and in the sheep, but not in the cow, increased as sward height decreased; and that the ratio of jaw movements to head movements was always greater than unity in both sheep and cattle and was greater on tall than on short swards in 2 of 3 comparisons. The rate of biting was significantly lower on tall than on short swards.