The global dairy industry is undergoing a significant transformation driven by advances in sensor technology and data analytics. Traditional monitoring methods, which rely primarily on visual observation by farmers, have long been the standard approach for detecting estrus, illness, and other health-related events in dairy herds. However, these conventional techniques are inherently limited by human fatigue, time constraints, and subjective judgment, resulting in suboptimal detection rates and delayed interventions. This paper presents a comprehensive review of the transition from traditional dairy farm monitoring to modern precision dairy farming, with a specific focus on the Nedap CowControl system as a representative case study of commercially deployed sensor technology. The Nedap CowControl platform utilizes accelerometer-based SmartTag sensors, including neck collars, leg tags, and ear tags, to continuously monitor cow behaviour patterns such as eating time, rumination time, activity levels, and inactivity periods. These sensors transmit data wirelessly to barn-based receivers, where proprietary algorithms analyse individual cow baselines and herd averages to generate real-time alerts for heat detection, health monitoring, and nutritional assessment. The review examines the technical architecture of the system, compares its performance against traditional observation methods, and discusses the broader implications of sensor-based monitoring for animal welfare, reproductive efficiency, and farm profitability. Findings from the literature indicate that sensor-based systems achieve heat detection rates exceeding 95%, compared to 30-50% for visual observation, and enable earlier identification of health issues through behavioural deviations detected hours before clinical signs become apparent. The paper concludes that while challenges such as initial investment costs and the need for technical training remain, the benefits of precision dairy farming technologies represent a compelling advancement in sustainable and efficient dairy production.

precision dairy farming, sensor technology, cow monitoring, heat detection, Nedap CowControl, accelerometer, animal welfare, SmartTag

agronomy

Presentation: poster