Technical note: Evaluation of a triaxial accelerometer for monitoring selected behaviors in dairy calves

Journal of Dairy Science
Leonie RolandMichael Iwersen

Abstract

The objectives of this study were (1) to develop an algorithm for the acceleration sensor of the Smartbow Eartag (Smartbow GmbH, Weibern, Austria) to distinguish between postures (lying and standing or locomotion) and to detect 6 kinds of activities (milk intake, water intake, solid feed intake, ruminating, licking or sucking without milk intake, and other activities) in dairy calves and (2) to evaluate this sensor for identifying these behaviors in dairy calves compared with observations from video. Accelerometers were applied to the left ears of 15 preweaned Holstein dairy calves. Calves were kept in a group pen and received milk replacer from an automatic calf feeder. Based on 38 h of acceleration data and video observation, an algorithm was established to detect the predefined behaviors. Using cross-validation, video recordings were used to analyze whether a behavior was detected correctly by the developed algorithm. For posture, sensitivity (94.4%), specificity (94.3%), precision (95.8%), and accuracy (94.3%) were high. Cohen's kappa was calculated as 0.88. For the 6 defined activities, overall (i.e., aggregated for all activities) accuracy was 70.8% and kappa was calculated as 0.58. Some activities (e.g., ruminating, feed...Continue Reading

References

Jul 16, 2010·Journal of Dairy Science·A M de PassilléJ Rushen
Dec 25, 2010·Journal of Dairy Science·O BurfeindW Heuwieser
Mar 7, 2013·Journal of Dairy Science·C J RuttenH Hogeveen
Jul 18, 2016·Journal of Dairy Science·M R BorchersJ M Bewley
Jan 4, 2017·Journal of Dairy Science·B WolfgerJ M Bewley
Feb 6, 2018·Journal of Dairy Science·S ReiterM Iwersen

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Citations

Jul 28, 2020·Journal of Dairy Science·Joao H C CostaHeather W Neave
Nov 25, 2019·Journal of Dairy Science·V GrößbacherC Winckler
Jul 9, 2020·Animals : an Open Access Journal From MDPI·Nicola GladdenDorothy McKeegan
Dec 14, 2021·Frontiers in Veterinary Science·Dengsheng SunKees van Reenen

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