Clinical and pathological features of aspergillosis due to in broilers.

Background And Aim: is a ubiquitous pathogen causing aspergillosis in poultry. This research aimed to evaluate the clinical and pathological features of aspergillosis infection in broilers.

Materials And Methods: infection was induced experimentally by intra-air sac inoculation of a 1.

Efficacy of tetravalent coryza vaccine against the challenge of serovars A and B isolates from Indonesia in chickens.

Aim: Infectious coryza is caused by . In Indonesia, this infection results in a 10%-40% decrease in egg production by laying hens. This study was conducted to determine the effectiveness of tetravalent coryza vaccine contained bacterin serovars A, B, C2, and C3; strain A-221, B-Spross, C2-Modesto, and C-3-Akko in layers based on antibody titer and clinical signs using a post-challenge test.