Mira Juliana, Herman Mariana, Zakia Luiza S, Olivo Giovane, Araujo Joao P, Borges Alexandre S, Oliveira-Filho José P
Department of Veterinary Clinical Science, School of Veterinary Medicine and Animal Science, Campus de Botucatu, UNESP - University Estadual Paulista, Botucatu, Sao Paulo, 18618970, Brazil.
Department of Microbiology and Immunology, Biosciences Institute, Campus de Botucatu, UNESP - Univ. Estadual Paulista, Botucatu, Sao Paulo, 18618970, Brazil.
Vet Dermatol. 2016 Oct;27(5):408-e104. doi: 10.1111/vde.12360. Epub 2016 Jul 14.
Aural plaques can be found on the inner surfaces of one or both ears of horses. Despite their low malignancy, these lesions can sometimes cause discomfort and sensitivity in horses, and a loss in commercial value due to their aesthetic effect. There has been a study describing the epidemiological features and the clinical prevalence of equine aural plaques in Brazil.
HYPOTHESIS/OBJECTIVES: To determine the clinical prevalence and selected associated factors of aural plaques.
In the study, 891 horses were assessed for aural plaques. The sample group had a median age of 5 years and comprised both sexes and various breeds from different regions of Brazil.
Horses were evaluated by a general observation of the body and a detailed observation of both ears. Data on the management system, characteristics of the lesions, the presence of ticks and ear grooming were collected for 109 clinically affected horses. An assessment of the frequency distribution of the disease and its characteristics was performed. Association tests were conducted to establish the relationships between the variables studied.
In 85% (40 of 47) of farms assessed, at least one horse presented with aural plaques. In 14.8% (132 of 891) of the horses, lesions characteristic of aural plaque were detected. Significant associations between the prevalence of "coalescing" lesions and a "semi-intensive" management system and ear grooming were detected.
The findings confirm the extensive distribution of this disease in Brazil and its association with several management factors.
耳部斑块可出现在马的一只或两只耳朵的内表面。尽管这些病变的恶性程度较低，但有时会导致马出现不适和敏感，并且由于其美观影响而导致商业价值损失。巴西有一项研究描述了马耳部斑块的流行病学特征和临床患病率。
假设/目的：确定耳部斑块的临床患病率及相关因素。
在该研究中，对891匹马进行了耳部斑块评估。样本组的中位年龄为5岁，包括来自巴西不同地区的不同性别和品种的马。
通过对马的身体进行一般观察以及对双耳进行详细观察来评估马。收集了109匹临床受影响马的管理系统、病变特征、蜱虫存在情况和耳部护理的数据。对疾病的频率分布及其特征进行了评估。进行关联测试以确定所研究变量之间的关系。
在评估的85%（47个农场中的40个）的农场中，至少有一匹马出现耳部斑块。在14.8%（891匹马中的132匹）的马中，检测到耳部斑块特征性病变。在“融合性”病变的患病率与“半集约化”管理系统和耳部护理之间检测到显著关联。
研究结果证实了这种疾病在巴西的广泛分布及其与多种管理因素的关联。
