Technical note: Development of a noninvasive respiration rate sensor for cattle

Area of Science:

• Animal Science
• Agricultural Engineering
• Veterinary Medicine

Background:

• Respiration rate (RR) monitoring in cattle is crucial for health assessment and early detection of heat stress.
• Current manual RR measurement methods are labor-intensive, time-consuming, and difficult for continuous monitoring.
• Heat stress negatively impacts milk production and fertility in cattle, necessitating effective monitoring solutions.

Purpose of the Study:

• To validate a newly developed automated device for measuring cattle respiration rate (RR).
• To compare the device's RR measurements against a reference method (visual flank movement counting).

Main Methods:

• An automated device utilizing a differential pressure sensor was developed to record RR.
• The reference method involved video recording and manual counting of flank movements in 6 Holstein-Friesian cows.
• Data were collected and analyzed across three body positions: dozing, lying, and standing.

Main Results:

• The automated device demonstrated high correlation with the reference method across all tested positions.
• Correlation coefficients were 0.92 for dozing, 0.98 for lying, and 0.99 for standing.
• The device proved suitable for automated and continuous RR counting in cattle.

Conclusions:

• The validated device offers a reliable and automated solution for monitoring cattle respiration rate.
• This technology can significantly aid in the early detection of heat stress, enabling timely interventions.
• Further development towards a marketable product is planned.