National Institute of Animal Health (NIAH)

Topics in Animal Health Research 2014

22. Development of a new bolus-type rumen sensor and continuous monitoring of rumen motility in cattle

Japanese

We developed a new bolus-type rumen sensor to continuously monitor rumen motility in cattle and compared this to the values to rumen motility obtained using the force transducer method. The findings of various studies have shown that the micro-accelerometer placed in the rumen or reticulum can effectively detect rumen motility. Bolus-type rumen sensor nodes, measuring 27 mm in diameter and 70 mm in length, that can send their own acceleration and temperature through wireless transmission have been developed. A receiving system with reception of ?95% has also been developed. The waveform of acceleration in bolus-type rumen sensor was similar to the waveform of rumen motility of the force transducer method. Three-month field experiments with several cattle using rumen sensor nodes and the system have demonstrated that rumen motility can be continuously monitored.
(Pathology and Pathophysiology Research Division)

References:

Arai S. et al (2015) Patent, patent application 2015-: 23112 (Japan)

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