Evaluation of evagination test efficiency for Taenia Saginata metacestodes

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Germano Francisco Biondi
Carlos Henrique Henrique
Adriano Cesar Oliveira
Alexandra Pastor Castro

Abstract

The objective of this study was to standardize a cysticerci evagination test to be used to clarify doubts related to the diagnosis of cattle cysticercosis in the slaughterhouse. According to the technical rules of the Brazilian Regulation on Industrial and Sanitary Inspection of Animal Products (1980 and 1997), cysticercosis is classified as live, calcified, localized or generalized. However, There is no definition for the degenerated cysticerci. In order to prevent risks to the health of consumers, this presentation is classified as live cysticercosis, as visual inspection alone is not able to identify the degeneration process. Eighty live cysticerci with evident viability characteristics were selected as group I (control), divided into eight subgroups, and 30 cysticerci with undefined aspect formed group 2. Group I was submitted to different concentrations of fresh cattle bile. In group I, results showed a 100% efficiency as all cysticerci (10/10) evaginated when immersed in a medium containing 0.9% saline, 10% fresh bile and 2.5% RPMI 1640. Cysticerci of group 2 did not evaginate and mechanical rupture and examination of vesical contents confirmed their degeneration.

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How to Cite
BIONDI, G. F.; HENRIQUE, C. H.; OLIVEIRA, A. C.; CASTRO, A. P. Evaluation of evagination test efficiency for Taenia Saginata metacestodes. Revista de Educação Continuada em Medicina Veterinária e Zootecnia, v. 3, n. 1, p. 49-54, 1 Jan. 2000.
Section
INSPECTION AND PUBLIC HEALTH