eCow Ltd.

- Bolus Software


The eCow rumen pH telemetry boluses come in two varieties: the farmBolus, designed for commercial farmers and nutritionists and the eBolus, designed for researchers in ruminant health. The eBolus contains all of the features of the farmBolus, but also has some additional features to specifically aid researchers, such as the ability to re-calibrate the bolus after use. This is not possible in non-fistulated cows as there is no way to retrieve the bolus.

The eCow boluses are designed for reliably measuring the conditions within a dairy cow’s reticulo-rumen. Each bolus measures both pH and temperature every minute and averages these readings every 15 minutes, storing the result on the bolus until the data can be downloaded using an eCow handset. Once the data has been downloaded onto the handset it can be viewed immediately then uploaded to our servers for concatenation, after which it can be more easily viewed on our desktop software.

Both products are described by the specification below:

  • Length: 135 mm
  • Diameter: 27 mm
  • Weight: 150 g
  • Specific Gravity: 2.7
  • Temperature accuracy: +/- 0.1 °C
  • pH accuracy: +/- 0.1 pH
  • Sampling rate: 96 data points per day (every 15 min)
  • Data storage: 2700 lines (4 weeks)
  • 6 months of logging and a 2 year shelf life
  • Frequency: 434 MHz

Additional benefits for researchers using the eBolus include:

  • Redox measurement possible as well as the pH and temperature measurements
  • The bolus can be re-calibrated as many times as necessary to lengthen life for as many uses as necessary
  • Software is specifically designed for research allowing adjustment of parameters such as monitoring intervals for maximum flexibility
  • Data can be sent directly to a private database
  • Auto-off function when bolus is outside of the animal for maximum shelf life
  • Built in hook handle for ease of retrieval and storage
  • One end of the bolus is weighted to encourage the bolus to sink into the reticulum and keep the sensor in rumen fluid – reticulum pH is consistently 0.25 pH units above rumen and fluctuates less

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