RT info:eu-repo/semantics/article T1 Prediction of Cow Calving in Extensive Livestock Using a New Neck-Mounted Sensorized Wearable Device: A Pilot Study A1 González Sánchez, Carlos A1 Sánchez Brizuela, Guillermo A1 Cisnal De La Rica, Ana A1 Fraile Marinero, Juan Carlos A1 Pérez Turiel, Javier A1 Fuente López, Eusebio de la K1 cow K1 extensive livestock K1 sensorized wearable device K1 monitoring K1 parturition prediction AB In this study, new low-cost neck-mounted sensorized wearable device is presented to help farmers detect the onset of calving in extensive livestock farming by continuously monitoring cow data. The device incorporates three sensors: an inertial measurement unit (IMU), a global navigation satellite system (GNSS) receiver, and a thermometer. The hypothesis of this study was that onset calving is detectable through the analyses of the number of transitions between lying and standing of the animal (lying bouts). A new algorithm was developed to detect calving, analysing the frequency and duration of lying and standing postures. An important novelty is that the proposed algorithm has been designed with the aim of being executed in the embedded microcontroller housed in the cow’s collar and, therefore, it requires minimal computational resources while allowing for real time data processing. In this preliminary study, six cows were monitored during different stages of gestation (before, during, and after calving), both with the sensorized wearable device and by human observers. It was carried out on an extensive livestock farm in Salamanca (Spain), during the period from August 2020 to July 2021. The preliminary results obtained indicate that lying-standing animal states and transitions may be useful to predict calving. Further research, with data obtained in future calving of cows, is required to refine the algorithm. PB MDPI SN 1424-8220 YR 2021 FD 2021-12-02 LK https://uvadoc.uva.es/handle/10324/73264 UL https://uvadoc.uva.es/handle/10324/73264 LA spa NO Sensors, December, 2021, vol. 21, n. 23, p. 8060 NO Producción Científica DS UVaDOC RD 23-ene-2025