Abstract
Original language | English |
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Article number | 1165 |
Journal | Sensors |
Volume | 19 |
Issue number | 5 |
Early online date | 7 Mar 2019 |
DOIs | |
Publication status | Print publication - 7 Mar 2019 |
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Keywords
- Cattle
- Bolus sensors
- Accelerometers
- Behaviour
- Rumination
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Identification of the rumination in cattle using support vector machines with motion-sensitive bolus sensors. / Hamilton, Andrew; Davison, Chris; Tachtatzis, Christos; Andonovic, Ivan; Michie, Craig; Ferguson, HJ; Somerville, Laura; Jonsson, Nicholas N.
In: Sensors, Vol. 19, No. 5, 1165, 07.03.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Identification of the rumination in cattle using support vector machines with motion-sensitive bolus sensors
AU - Hamilton, Andrew
AU - Davison, Chris
AU - Tachtatzis, Christos
AU - Andonovic, Ivan
AU - Michie, Craig
AU - Ferguson, HJ
AU - Somerville, Laura
AU - Jonsson, Nicholas N
PY - 2019/3/7
Y1 - 2019/3/7
N2 - 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.
AB - 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.
KW - Cattle
KW - Bolus sensors
KW - Accelerometers
KW - Behaviour
KW - Rumination
U2 - 10.3390/s19051165
DO - 10.3390/s19051165
M3 - Article
C2 - 30866541
VL - 19
JO - Sensors
JF - Sensors
SN - 1424-3210
IS - 5
M1 - 1165
ER -