Key result
Infectious laryngotracheitis is linked to higher mortality versus uninfected commercial layer flocks.
Why the study?
Infectious laryngotracheitis causes acute respiratory disease and economic loss in commercial layer hens, but its prevalence and impact in field outbreaks were not well characterized.
Cross-Sectional (n=625)
p-value: p=< 0.05
There is a high prevalence of infectious laryngotracheitis in commercial layer flocks in the Konya region of Turkey, which is associated with significantly increased mortality.
High ILT seroprevalence in Turkish layers was associated with higher mortality; leaves open targeted surveillance and control trials in commercial flocks.
Infectious laryngotracheitis (ILT) is an acute respiratory disease of chickens and a cause of great economic loss in commercial layers. The aims of this study were to investigate the prevalence of ILT in the field outbreaks and to compare the characteristics of ILT-infected and free flocks of commercial layers. A total of 625 blood serum samples were collected from 25 different layer flocks. The presence of antibodies against infectious laryngotracheitis virus (ILTV) in each sample was determined by ELISA. Of the 625 serum samples, 266 (42.56%) were found to be positive for ILTV antibodies. A total of 16 (64%) flocks were detected ILT positive by ELISA method. The mortality of infected flocks was statistically higher (P < 0.05) than uninfected flocks. The egg production of positive flocks was lower than that of the free flocks, but this difference was not statistically significant. The average live weight of hens in infected flocks was lower (P > 0.05) than hens in free flocks. In conclusion, the results of this study indicated a high prevalence of ILT infection in the commercial layer flocks in Konya region, Turkey. In outbreaks, ILT significantly increased the mortality rate and decreased the average live weight in layer hens.
No takes yet. Share an insight, caveat, or question.
Aras et al. (2018) conducted a cross-sectional in Infectious laryngotracheitis (n=625). Infectious laryngotracheitis infection vs. Uninfected flocks was evaluated on Mortality (p=< 0.05). Infectious laryngotracheitis infection was present in 64% of commercial layer flocks and was associated with significantly higher mortality compared to uninfected flocks (P < 0.05).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: