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Ciência Rural

Print version ISSN 0103-8478On-line version ISSN 1678-4596


SANTIN, Elizabeth et al. The use of scaning electron microscopy in postvaccinal evaluation of tracheal epithelium of Coturnix coturnix japonica. Cienc. Rural [online]. 2003, vol.33, n.1, pp.121-124. ISSN 0103-8478.

This study aimed at evaluating the use of scanning electron microscopy in the study of the post-vaccinal respiratory reaction of the tracheal epithelium of quails (Coturnix coturnix japonica) immunized against Newcastle disease. A number of 36 quails were distributed into four groups: T1 ¾ control birds (non-vaccinated); T2 ¾ birds vaccinated with Ulster 2C strain; t3 ¾ birds vaccinated with B1 strain; t4 ¾ birds vaccinated with LaSota strain. Regardless the experimental group, birds did not show detectable clinical signs of post-vaccinal respiratory reaction. However, the analysis of tracheal fragments by scanning electron microscopy showed that birds vaccinated with B1 and LaSota strains developed epithelial sloughing of the trachea, whereas those vaccinated Ulster 2C strain did not develop this change, demonstrating intact tracheal epithelium, similar to the control group.

Keywords : Coturnix coturnix japonica; Newcastle disease; scanning electron microscopy; respiratory post-vaccinal reaction.

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