Caracterização clínico-patológica e epidemiológica das dermatopatias de ruminantes no agreste Paraibano

• Ano de defesa: 2019
• Autor(a) principal: Lima, Telma de Sousa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Ciências Veterinárias; Programa de Pós-Graduação em Ciência Animal; UFPB
• Palavras-chave em Português: Doenças de pele; Bovinos; Pequenos ruminantes; Falhas no manejo; CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/123456789/14355

Three chapters related to skin diseases in cattle, goats and sheep of Agreste of Paraíba are described in this dissertation. The first chapter deals with the retrospective study of skin diseases in ruminants diagnosed in the Laboratory of Animal Pathology during the period from 2013 to 2017. For this purpose, necropsy and biopsy records were reviewed for a total of 2059 samples, recorded over four years of study. Information regarding age, sex, race and origin, clinical signs, epidemiological data, macroscopic and histological lesions, and definitive diagnosis were collected. The identified diseases were allocated to pre-determined categories. In four years, 72 samples corresponded to skin diseases in ruminants. Of these, 24 (33.3%) were attributed to toxic origin, 20 (27.7%) to neoplastic and tumoriform lesions and 10 (13.88%) to infectious and parasitic. Seven (9.72%) cases corresponded to skin disease secondary to nutritional disorders and five (6.94%) to immunogenic disorders. The bovine species was the most affected (37/72), especially squamous cell carcinoma (SCC) (9/37), followed by photosensitization by Floerichia humboldtiana (5/37) and dermatophytosis (4/37). The sheep were the second most affected species (26/72), with photosensitization by Brachiaria decumbens (5/26), culicoid sting dermatitis (5/26) and photosensitization by Floerichia humboldtiana and CCE (3 cases each). As for the caprine species (9/72), photosensitization by Floerichia humboldtiana (6/9) and actinic dermatosis (1/9) should be highlighted. In this study, the occurrence of dermatopathies is attributed to faults in the management, especially nutritional and health of the herd, justifying the need for measures to control these diseases. The second chapter describes the clinical and pathological findings of nodular elastosis with cystic comedones associated with generalized alopecia in a goat, which was characterized by elastosis, comedones, granulomatous dermatitis, follicular cysts, furunculosis, acinar sebaceous atrophy, epithelial hyperplasia and hyperkeratosis. Progressive and direct sun exposure is the main factor related to its occurrence, being more severe in light-coated breeds. This condition should be included in the differential diagnosis of allo-cecic diseases such as zinc deficiency, photosensitization and dermatophyllosis in goats. In the third chapter we describe the microscopic findings of peripheral nerve sheath tumor, eosinophilic dermatitis and vaccine granuloma in a bovine. The diagnosis of multiple skin lesions was established based on histopathological, histochemical, cytopathologic and immunohistochemical findings. Therefore, the investigation of cutaneous lesions is encouraged in order to identify the morphological pattern of the conditions as well as contribute to the control of cutaneous diseases in cattle.