Achados histopatológicos do osso trabecular nas osteodistrofias de bubalinos procedentes da Ilha de Marajó, Estado do Pará.

Abstract

The objective of this study was to determine the histology of sub clinical and clinical esteodistrophy in buffalo trabecular bones. We therefore studied 110 buffalos from Marajó Island. Young and adult animals formed the groups. Two subgroups were defined on the basis of clinical and anatomic-pathological analyses: a) animals with no evidence of osteodistrophy, b) animals with osteodistrophy. Trabecular disorganization represented the main alteration of the trabecular bone found mainly in young animals with clinical osteodistrophy in 34.38% of the cases. This alteration was characterized by trabecular bones arranged in a disorderly manner and abnormally placed, obliquely oriented and, often, with transversal trabecular bones. Cartilage isles were seen in the metaphyseal region, especially in animals with clinical osteodistrophy. This fact occurred in 15.63% and 11.54% of the young and adult animals, respectively. It was also observed trabecular necrosis, intra-membranous bone formation, fibroplasias and hemorrhages frequently associated to micro fractures. Trabecular bone alterations in this study were compatible to those described for bovines with copper deficiency.