Abstract：
Scabies is an important skin disease in several species of domestic and wild animals; however, few reports in Brazil have emphasized its occurrence in buffaloes. This article describes the epidemiological, clinical and pathological aspects and diagnosis of psoroptic mange in buffaloes in a property in the municipality of Castanhal, PA, Amazon region. Of the 41 buffaloes examined, 38 males and females of the Murrah, Baio, Mediterranean and Carabao breeds and their crossbreeds, aged between 2 and 20 years, had a history of pruritus. Clinical examination was performed to map the lesions, skin scrapings were collected to identify the mites, and a biopsy was performed for histopathological examination. Clinical signs, from mild to severe intensity, varied according to the system of creation and handling of the animals and were more severe in buffaloes raised in bays than those raised under a collective regime (pastures and collective troughs). The characteristic clinical signs were intense itching, extensive areas of alopecia, periocular edema, and thickening of the epidermis with exudative crusts covering the face, chamfer, neck, scapular region, back, base of the horn, thoracic and pelvic limbs and chest. The behavior of rubbing the affected regions of the body against structures (troughs, fence posts, gates) or with the horns was frequently observed and provided relief from itching. In the most severe cases, mites were also noted in the crusts, which were identified as Psoroptes natalensis. Histological skin lesions exhibited alterations consistent with immune-mediated dermatitis, which is typical of hypersensitivity to mite-derived allergens.
摘要：
镰刀是几种家养和野生动物的重要皮肤病；然而，巴西很少有报道强调它在水牛中的发生。这篇文章描述了流行病学，在Castanhal市的一处物业中，水牛中的psoropticalmange的临床和病理学方面以及诊断，PA,亚马逊地区。在检查的41只水牛中，38名Murrah男性和女性，Baio,地中海和卡拉宝品种及其杂交品种，年龄在2至20岁之间，有瘙痒病史.进行了临床检查以绘制病变图，收集皮肤刮片以鉴定螨虫，并进行了活检以进行组织病理学检查。临床体征,从轻度到重度，根据动物的创造和处理系统而变化，在海湾中饲养的水牛比在集体制度（牧场和集体低谷）下饲养的水牛更为严重。特征性临床症状为剧烈瘙痒,广泛的脱发区域，眼周水肿,表皮增厚，面部有渗出性结皮，倒角,脖子,肩胛骨区域,回来,喇叭的底部，胸部和骨盆四肢和胸部。身体受影响区域与结构(槽，栅栏柱,门）或角经常被观察到并缓解瘙痒。在最严重的情况下，在地壳中也注意到螨虫，被鉴定为天然吸附剂。组织学皮肤病变表现出与免疫介导性皮炎一致的改变，这是对螨源过敏原的典型过敏。
