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Investigating the Impact of Management Practices (Housing, Feeding, and Handling) on Equine Welfare

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

Ana Colomé

Abstract

Equine welfare is a complex topic that relies on the physical, nutritional, social, and psychological needs of horses, and all of these are directly influenced by the daily management practices applied. The current study examines the effects of housing, feeding, and management approaches on the welfare of horses in general, drawing on recent scientific literature, welfare assessment models, and evidence from equine science. The design of stables, ventilation, bedding, turnout schedules, and opportunities to exercise natural behaviours are all features of housing conditions that greatly influence stress levels, locomotor patterns, and the incidence of musculoskeletal or respiratory problems. All of them, such as digestive health, metabolic balance, and stereotype development, are significantly affected by feeding methods, including fodder availability, feeding frequency, diet balance, and the extent to which these methods align with natural grazing behaviour. This question is based on the Five Domains Model and the concept of animal-centred care. It is holistic in its investigation of how the three fundamental areas of management relate to equine well-being outcomes. The study's findings demonstrate that management techniques that encourage natural behaviour, ensure access to fibre-rich forage at all times, reduce social isolation, and employ low-stress handling methods have a dramatic impact on welfare outcomes. On the other hand, keeping an animal in a small space, feeding it a diet high in concentrates, and treating it unpleasantly are all factors that may increase the likelihood of the animal developing behavioural disorders, physiological stress, and health issues. The study indicates that management conducive to animal welfare requires evidence-based, integrated tactics that prioritise behavioural needs, nutritional balance, and the establishment of healthy interactions between humans and horses. The recommendations emphasise the utility of welfare assessment methods, the enhancement of caretaker training, and the introduction of management changes in equine institutions to enable humane and sustainable care for horses.

Keywords: Management Practices (MP), Housing (H), Equine Welfare (EW), Natural Behaviour (NB)

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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