Indicators and risk factors of infectious laryngotracheitis in layer hen flocks in Algeria.

Background And Aim: Since 2017, there have been epidemics with respiratory disorders in the laying hen farms in Algeria, as signs and lesions, respiratory difficulties, and hemorrhagic tracheitis, which closely like laryngotracheitis. This study aimed to analyze the epidemiological, serological, and clinical indicators, as well as the risk factors, of infectious laryngotracheitis (ILT) in layer hen flocks in Algeria.

Materials And Methods: A total of 1728 layer hens were sampled randomly from 48 poultry houses.