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Abstract
In animal ecosystems, energy expenditure plays a pivotal role in animals’ survival success, reproduction, and population dynamics. Throughout an animal's daily life, the total energy expenditure undergoes dynamic changes influenced by numerous internal and external factors. Hence, monitoring such dynamic changes in animal’s energy expenditure can serve as early indicators for underlaying health issues and welfare concerns. Indirect calorimetry in a climate respiration chamber (CRC) is the gold standard for measuring energy expenditure, yet its application is constrained. Placing animals in the CRC may induce stress, impacting metabolic rates, and the artificial chamber environment raises concerns about ecological validity. Addressing these limitations is essential for advancing our understanding of diverse metabolic processes. This article introduces an innovative non-invasive software-sensor for online monitoring of dynamic energy expenditure, the difference between total energy expenditure and resting energy expenditure. The proposed system features a wearable integrated sensor, enabling the online measurement of activity, heat flux, and skin temperature. Complementing this hardware, the system incorporates an adaptive subject-specific model to estimate the time-varying energy expenditure, which is used to infer dynamic energy expenditure. In this particular study, the software-sensor is developed and validated using four pigs spanning different ages. The system is benchmarked against indirect-calorimetric measurements within a CRC. The experimental protocol encompasses varied temperature conditions, namely higher, within, and lower than the thermal neutral zone, at low and high activity levels. While the experiments are ongoing, the preliminary findings show great promise, and the validation results will be presented in the forthcoming paper.
Original language | English |
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Title of host publication | 11th European Conference on Precision Livestock Farming (ECPLF 2024) |
Editors | D. Berckmans, P. Tassinari, D. Torreggiani |
Publisher | European Association for Precision Livestock Farming |
Pages | 1307-1314 |
ISBN (Electronic) | 9791221067361 |
ISBN (Print) | 9798331303549 |
Publication status | Published - Sept 2024 |
Event | 11th European Conference on Precision Livestock Farming - Bologna, Italy Duration: 9 Sept 2024 → 12 Sept 2024 |
Conference/symposium
Conference/symposium | 11th European Conference on Precision Livestock Farming |
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Country/Territory | Italy |
City | Bologna |
Period | 9/09/24 → 12/09/24 |
Keywords
- Software-sensor
- non-invasive
- random forest
- energy expenditure
- subject-specific
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Dive into the research topics of 'The EnergyTag: A Wearable Software Sensor for Online Monitoring of Animal’s Dynamic Energy Expenditure'. Together they form a unique fingerprint.Activities
- 1 Oral presentation
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The EnergyTag: A Wearable Software Sensor for Online Monitoring of Animal’s Dynamic Energy Expenditure
Aarts, J. (Speaker), Vodorezova, K. (Contributor), Tang, Y. (Contributor), Heetkamp, M. (Contributor), Laurenssen, B. (Contributor) & Youssef Ali Amer, A. (Contributor)
11 Sept 2024Activity: Talk or presentation › Oral presentation › Academic