Sero-epizootiological investigation of infectious laryngotracheitis infection in commercial poultry of Plateau State, north central Nigeria.

Infectious laryngotracheitis (ILT) is a highly contagious acute respiratory disease of chickens with outbreaks resulting in high economic losses due to increased mortality and drop in egg production. This study reports a survey of ILT virus antibody conducted in nine local government areas (LGAs) of Plateau State involving 67 randomly selected commercial poultry flocks. In all, 938 sera were tested using the Agar Gel Immuno-diffusion (AGID) technique. Overall prevalence of 1.2% (N = 11) was recorded. ILT virus antibody was found in 2.5% (n = 9) and 7.1% (n = 2) of the tested sera from Jos South and Langtang North LGAs, respectively. No detectable ILT virus antibody was found from the other seven LGAs. This is the first report of ILT infection in poultry from the North central part of Nigeria. It is therefore recommended that the economic implication of ILT infection in Nigerian poultry population be conducted in order to know if vaccination should be adopted for control.