[Value of the Ouchterlony reaction in experimental trichinelliasis in swine].

The double diffusion method after Ouchterlony was employed for the diagnosis of swine trichinellosis. Studied were sera of 12 experimentally infected pigs from the 15th to the 365th day after their treatment with moderate and massive doses of Trichinella spiralis. The antigen used was an extract of freeze-dried decapsulated muscular trichinellae, obtained by Tanner and Gregory's method modified according to the institute's laboratory conditions. Results showed that Ouchterlony's double diffusion reaction is specific and can used for the diagnosis of trichinellosis in pigs within the period cited above. The reaction has proved to be most strongly expressed when used between the 30th and 120th day.