engleski

Abscess diseases in goats

Common name abscess diseases is used to describe two etiologically distinct diseases ; Morel disease caused by Staphylococcus aureus subsp. anaerobius and caseous lymphadenitis (CLA) caused by Corynebacterium pseudotuberculosis. Both diseases have similar epizootiology and are characterized by abscess formations in or near major superficial lymph nodes. The major difference is that, unlike in Morel’s disease, in CLA abscesses can also develop internally in organs, although that visceral form is relatively rare in goats. In addition, awareness of the Morel disease is very limited, at least in Croatia, making the possibility of misdiagnosis with the more common and very well documented CLA highly probable. Objective of this study was to evaluate clinical and epizootiological findings of Morel’s disease and caseous lymphadenitis in two naturally infected goat herds in Croatia. All animals in both herds were clinically examined by inspection and palpation for the presence of abscesses. Epizootiological data and clinical features, including the localization, number and size of the abscesses, were recorded and compared. Samples were taken from each detected abscess for bacteriological examination. The study showed that in the early epizootic stage both diseases equally affect both young and adult goats. The main differences in the clinical picture were related to the smaller average number and size of abscesses per animal in caseous lymphadenitis. However, these differences are still considered to be insufficient to distinguish individual cases and in a case of an outbreak, confirmatory diagnosis of the disease should always be based on microbiological examination.

CLA; Morel disease; goats

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