Geburek F, Deegen E, Hewicker-Trautwein M, Ohnesorge B
Klinik für Pferde, Stiftung Tierärztliche Hochschule Hannover, Deutschland.
Dtsch Tierarztl Wochenschr. 2005 Jul;112(7):243-51.
In the present field study the skin of the feet of 37 heavy draught horses of different breeds showing verrucous pastern dermatitis was examined clinically. Included were the degree of severity of the disease and the prevalence of anatomically normal structures associated with the skin: fetlock tufts of hair ("feathering"), ergots, chestnuts, bulges in the pastern region, cannon circumference. Each horse was examined for Chorioptes sp. skin mites. Information was also collected on the development of the skin alterations and housing conditions and feeding. These individual data were correlated with the clinical degree of severity of verrucous pastern dermatitis, which was evaluated using a numerical code (scoring system). In addition, punch biopsies were taken from the diseased skin of the feet and from healthy skin of the neck for comparative patho-histological examination (see Part III). Verrucous pastern dermatitis is a chronic disease which can be divided into four groups: scaling (group I), hyperkeratotic and hyperplastic plaque-like lesions (group II), tuberous skin masses (group III), and verrucous skin lesions with rugged surfaces (group IV). No correlation was found between the clinical degree of severity of the skin lesions and sex, breed, amount of work, use of stallions for breeding, grooming condition of the hair, white markings in the foot region, or Chorioptes sp. infestation. In regard to feeding it was found that the amount of maize and oats fed had some influence on the clinical degree of severity. Statistical analysis revealed a significant correlation between the clinical degree of severity and the age, the grooming condition of the hooves, and the mean cannon circumference. The prevalence of fetlock tufts of hair, chestnuts, ergots, and anatomically normal bulges in the pastern region also increased significantly with the clinical degree of severity. Furthermore the study revealed that the clinical degree of severity depended on the hygienic conditions of the stables and of the ground where the horses were kept outdoors.
在本次实地研究中，对37匹不同品种的重型挽马足部皮肤进行了临床检查，这些马均患有疣状跗关节皮炎。检查内容包括疾病的严重程度以及与皮肤相关的解剖学正常结构的发生率：球节毛簇（“羽状毛”）、距毛、蹄冠、跗关节区域的凸起、管围。每匹马都检查了是否感染疥螨属皮肤螨。还收集了皮肤病变的发展情况、饲养条件和喂食情况等信息。这些个体数据与疣状跗关节皮炎的临床严重程度相关，后者使用数字编码（评分系统）进行评估。此外，从足部患病皮肤和颈部健康皮肤取打孔活检组织进行比较病理组织学检查（见第三部分）。疣状跗关节皮炎是一种慢性疾病，可分为四组：脱屑（第一组）、角化过度和增生性斑块样病变（第二组）、结节状皮肤肿块（第三组）以及表面粗糙的疣状皮肤病变（第四组）。未发现皮肤病变的临床严重程度与性别、品种、工作量、种马用于繁殖的情况、毛发梳理状况、足部区域的白色斑纹或疥螨属感染之间存在相关性。关于喂食，发现所喂玉米和燕麦的量对临床严重程度有一定影响。统计分析显示，临床严重程度与年龄、蹄部梳理状况以及平均管围之间存在显著相关性。球节毛簇、蹄冠、距毛以及跗关节区域解剖学正常凸起的发生率也随临床严重程度显著增加。此外，研究表明临床严重程度取决于马厩以及马匹户外饲养场地的卫生条件。
