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Fig. 3 | Animal Biotelemetry

Fig. 3

From: Classification of behaviour in housed dairy cows using an accelerometer-based activity monitoring system

Fig. 3

Example time series of raw tri-axial accelerometer and its component outputs for lying, standing and feeding. a Example time series of the raw tri-axial accelerometer output for observed periods of lying, standing and feeding for a single cow. The x-, y- and z-axis correspond to the blue, green and red lines, respectively. When a cow is lying or standing, little change in the acceleration is registered because these two behaviours exhibit little overall movement. The shifts in the acceleration observed when the cow is feeding are caused by the cow moving its head up and down. b Output readings of the running mean of the acceleration in the y-axis and vectorial dynamic body acceleration (VeDBA) values under the three different behaviours. These two parameters correspond to the static and dynamic components of the acceleration. There is a clear difference in the VeDBA outputs between feeding and lying or standing. There is also a difference in the running mean between standing and lying which is caused by a difference in the component in the y-axis of the gravity field (see also Fig. 1c, d)

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