ANATOMIC-PATHOLOGICAL STUDY OF DIGITAL DERMATITIS WOUNDS IN CATTLE

• Autor(a) principal: Castro, Glauciane Ribeiro
• Data de Publicação: 2008
• Outros Autores: Brito, Luiz Augusto Batista, Fioravanti, Maria Clorinda Soares, Silva, Luiz Antonio Franco da, Araújo, Eugênio Gonçalves, Orlando, Camila França de Paula, Franco, Leandro Guimarães, Moura, Maria Ivete
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência animal brasileira (Online)
• Texto Completo: https://revistas.ufg.br/vet/article/view/2726
• topic: vacas; enfermidades digitais; erosiva; proliferativa; histopatologia.

This essay had the scope of characterizing anatomic-pathological aspects of digital dermatitis wounds in distinct development phases. The essay was carried out from August 2004 and November 2005, using 40 cows distributed in four groups of ten animals each. Group I (GI) consisted of clinically healthy animals, and groups II (GII), III (GIII) and IV (GIV), consisted of animals bearing wounds in initial, erosive and proliferative phases, respectively. In GII histological observations were corneal stratus’ thickening, necrosis, hiperplasia, acanthosis, espongiosis and hyperqueratosis. In GIII it was observed hyperemia, ulcers, granulation tissue, hemorrhage and, microscopically, corneal layer thickening, paraqueratosis and multifocal necrosis. In GIV lesions of verrucous aspect, presence of fur, papillary projections were observed macroscopically, and, at histological examination, destruction of corneal layer and epidermis along with necrosis in all samples from the group.  Concerning the microbiota, fungi were not observed in any group. As for bacteria, mixed flora was observed, especially spirochetes, in GII, GIII e GIV. Finally, it was concluded that histological alterations in distinct phases of digital dermatitis may commonly be present, differing in terms of severity. The presence of spiral microorganisms suggests their association with etiopathogenesis. KEY WORDS: Cattle, digital lesions erosives and proliferatives, histopathology.