Abstract
The feeding time of dairy cows is linked with the health status of the animal and can be used to estimate daily feed intake together with other measurements. The aim of this study was to develop a model to measure the time a dairy cow spends at a feed bunk using an Ultra wide-band indoor positioning system.The feeding behavior of 50 dairy cows was measured during 7 days using Ubisense indoor positioning system and Insentec roughage feeders. The feeding probability (presence at the feeder) of the cows was calculated using logistic regression model with the distance to feed barrier as input and the Viterbi algorithm was used to calculate the most likely state (feeding or not feeding) given state transition probabilities.The model was able to predict whether the cow was at the feeding trough or not with the accuracy of 97.6%, sensitivity 95.3% and specificity 97.9%. The model was also able to estimate the mean bout duration and the number of feeding bouts.
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