Technical note: Accuracy of an ear tag-attached accelerometer to monitor rumination and feeding behavior in feedlot cattle.

@article{Wolfger2015TechnicalNA,
  title={Technical note: Accuracy of an ear tag-attached accelerometer to monitor rumination and feeding behavior in feedlot cattle.},
  author={Barbara Wolfger and Edouard Timsit and Edmond A. Pajor and Nigel B. Cook and Herman W. Barkema and Karin Orsel},
  journal={Journal of animal science},
  year={2015},
  volume={93 6},
  pages={
          3164-8
        }
}
Early identification of sick cattle increases treatment success and decreases mortality. Continuous automated records of behavior can be used to identify sick cattle early in the disease process. The objective was to evaluate accuracy of an ear-attached accelerometer (SensOor) that quantified ear movements and estimated feeding and rumination time through a proprietary algorithm. Accelerometers were attached to the ear tag of 18 steers with an initial mean BW of 326 ± 46 kg. The manufacturer's… 

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Automated Monitoring of Panting for Feedlot Cattle: Sensor System Accuracy and Individual Variability

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References

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TLDR
Evidence is provided that the present ear sensor technology can be used to monitor ruminating and resting behavior of freestall-housed dairy cattle and that this technology shows promise for monitoring eating behavior, whereas more work is needed to determine its suitability to monitor activity of dairy cattle.

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TLDR
Physical and dietary differences between dairy and beef cattle may have resulted in the inaccuracy of the Hi-Tag system when used in beef cattle fed typical backgrounding and finishing diets.

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Technical note: Validation of a system for monitoring rumination in dairy cows.

TLDR
The objective was to validate the data generated by this electronic rumination monitoring system, which indicated that the electronic system was an accurate tool for monitoring this behavior in dairy cows.

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TLDR
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TLDR
The results indicate that the Hi-Tag system is an accurate tool for monitoring rumination behavior in Holstein Friesian heifers from the age of 9 mo, and that suckling from a teat interfered with recording from this system.

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TLDR
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TLDR
This electronic system is a useful tool for monitoring intakes and feeding and drinking behavior of loose-housed cows and showed a high specificity (100%) and sensitivity (100 and 99.76% for the feed and water bins, respectively) for cow identification.

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TLDR
Steers with more variable eating patterns exhibited greater ADG and tended to have greater G:F, a finding that is contrary to industry perception.