Detection of antibody in transparent fluid of semen and in serum after inoculation of Newcastle disease vaccines by different routes.
Cocks were immunized with live and inactivated Newcastle disease virus (ND) vaccines by different routes. Haemagglutination-inhibiting (HI) antibody activity could be detected in transparent fluid of semen (TF) of these birds except after intracloacal application of an inactivated ND vaccine. Although a comparative study of the HI antibody course in both serum and TF showed similarities after primary and secondary vaccinations, morphological studies of the TF-producing organ suggest the development of local immunity.
Gassmann
R
R
Institute of Poultry Diseases, Free University of Berlin, Berlin 33, Germany.
von Rautenfeld
D B
DB