| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Outline of Final Research Achievements |
It has been desired to realize a system that evaluates the cattle’s stress from the variation of the heartbeat interval (RR interval) on farms, because the stress monitoring should be important for early detection of diseases, productivity improvement and animal welfare. In this study, a non-contact type plethysmography sensor which utilizes a microphone highly-sensitive to the cow’s heart sound frequency band was developed. In addition, an algorithm to calculate the heartbeat interval in a high accuracy was also developed. It was found that the calculated heartbeat interval from the calf’s heart sound which was detected by the non-contact sensor at a distance of 100 mm could be nearly equivalent to the RR interval by electrocardiography.
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