Title
Identification of the Rumination in Cattle Using Support Vector Machines with Motion-Sensitive Bolus Sensors.
Abstract
The reticuloruminal function is central to the digestive efficiency in ruminants. For cattle, collar- and ear tag-based accelerometer monitors have been developed to assess the time spent ruminating on an individual animal. Cattle that are ill feed less and so ruminate less, thus, the estimation of the time spent ruminating provides insights into the health of individual animals. pH boluses directly provide information on the reticuloruminal function within the rumen and extended (three hours or more) periods during which the ruminal pH value remains below 5.6 is an indicator that dysfunction and poor welfare are likely. Accelerometers, incorporated into the pH boluses, have been used to indicate changes in behaviour patterns (high/low activity), utilised to detect the onset of oestrus. The paper demonstrates for the first time that by processing the reticuloruminal motion, it is possible to recover rumination periods. Reticuloruminal motion energy and the time between reticuloruminal contractions are used as inputs to a Support Vector Machine (SVM) to identify rumination periods with an overall accuracy of 86.1%, corroborated by neck mounted rumination collars.
Year
DOI
Venue
2019
10.3390/s19051165
SENSORS
Keywords
Field
DocType
cattle,bolus sensors,accelerometers,behaviour,rumination
Support vector machine,Ruminating,Electronic engineering,Ear tag,Animal science,Engineering,Bolus (digestion),Rumination
Journal
Volume
Issue
ISSN
19
5
1424-8220
Citations 
PageRank 
References 
1
0.39
3
Authors
8