European Conference on Precision Livestock Farming edition:3 location:Skiathos, Greece date:3-6 June 2007
The investigations aimed at analysing and modelling moving and resting behaviour in suckler cows during the calving period via sensor based systems. For this, the parameter "movement avtivity" was measured throughout 20 parturitions in the period from 5 days ante partum (5ap) to 3 days post partum (3pp). Another aim was to evaluate this parameter regarding its force of expression. To evaluate the reaction of each animal individually, the mean-value analysis as well as 2 different approaches to time series analytics were used: Lowess-function and Fourier-analysis. The parameter "movement activity" proved to be efficient in assessing status of suckler cows during the calving period. Mean-value analysis exposed that mean pacing activity and time spent in upright resting position underwent distinct variations during calving. The sensitivity of the developed models for characterising animal reactions ranged from 75-90% with an error rate of 24-37% during the calving period.