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Wireless Sensor Networks for Early Detection of Stress and Fatigue in Performance Horses

Retrospektive Studie der Pferde mit chronisch rekurrierender Blinddarmobstipation nach chirurgischer Versorgung mittels Erweiterungsplastik des Ostium caecocolicum

Wang Lei

Abstract

Diagnosing stress and exhaustion in early-stage performance horses is essential for training better, preventing injuries, and ensuring the well-being of the entire equine. WSNs bring together multiple physiological and environmental sensors and provide a non-invasive solution for real-time monitoring. Such networks can continuously measure critical variables such as heart rate, respiration rate, body temperature, movement patterns, and ambient conditions, and wirelessly transmit this information to centralized computers for analysis. High-level algorithms and machine learning models can then be used to detect subtle abnormalities that may indicate stress, fatigue, or imminent overstraining. Such a technology will enable a trainer/veterinarian to intervene promptly, adjust training programs, and maximize recovery, thereby enhancing performance with minimal health risks. WSNs offer several advantages over conventional monitoring approaches, including mobility, scalability, and continuous high-resolution data collection. Monitoring equine performance using WSNs is an essential step towards precision management and evidence-based decision-making. It helps fill the gap between equine physiology and data-driven performance optimization. This paper focuses on the design, development, and potential uses of WSNs for detecting early warning signs of stress and fatigue in performance horses, and on their significance for the development of equine sports science and equine welfare.

Keywords: Wireless Sensor Network (WSN); Early Detection (ED); Stress (SS); Fatigue (FF); Performance Horses (PH)

Pengliang Li, Xuyan Wu, Wei Wang, Cheng Zhang, Xiaochen Yang, Jixiang Li

Abstract

Impaction is one of the most common disease of the cecum in horses. It is important to distinguish between acute and chronic recurrent cases. Acute impaction occurs suddenly and resolves within a few days with medical and/or surgical treatment whereas in chronic cases the impaction within the base or the whole cecum occurs repeatedly at irregular intervals. The chronic recurrent cecal impaction (CRCI) is characterized by hypertrophy of muscle in the cecal base or entire cecum. The pathogenesis is not fully understood: hypothesis is that the cecal impaction induces a distension during the contraction of the circular muscle layer which is a stimulus of a hypertrophy of the circular and longitudinal muscle layer in the cecum. Furthermore, neuronal density in the plexus myentericus was found to be decreased significantly in the cecal wall of CRCI. Initially, in cases of CRCI the cecocolic orifice is not entirely blocked allowing partial transit of ingesta. Hypertrophy of the muscle layer (longitudinal and circular muscle) begins at the cecal base and as the disease progresses, the cecocolic opening becomes completely obstructed due to the automatic closure mechanism. The rectal and ultrasound exam are the most useful diagnostic steps while different degrees of cecal impaction and/or tympany, a marked thickening and cecal wall contractility due to palpation are found. The hypertrophy can be regarded as a pathognomonic sign. Treatment in our study was done by surgical enlargement of the cecocolic orifice (created by Huskamp 1990). Tissue samples of defined cecal regions were taken during surgery or necropsy: the circular and longitudinal muscle layer were significantly thicker, linear neuron densities were significantly lower each compared to clinically healthy horses. Based on smooth muscle thickening and neuron deficit, rectally palpable and ultrasound visible cecal wall thickening, horses suffering from CRI have a poor prognosis. Surgery by enlargement of the cecocolic orifice in horses with CRCI have a better prognosis if only the cecal base has a thickening and a normal cecal body wall.

Keywords: horses, chronic recurrent cecal impaction, surgical treatment enlargement cecocolic orifice, long-term survival

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