A technique for isolating turkey respiratory adenoviruses

Area of Science:

• Veterinary Virology
• Avian Pathology
• Molecular Biology

Background:

• Turkey respiratory adenoviruses cause significant disease in poultry.
• Accurate isolation and characterization of these viruses are crucial for disease management.
• Previous methods for adenovirus isolation were time-consuming and labor-intensive.

Purpose of the Study:

• To isolate and characterize turkey respiratory adenoviruses from clinically ill turkey poults.
• To establish a reliable cell culture system for adenovirus propagation.
• To investigate the adaptability of isolated adenoviruses to different cell types.

Main Methods:

• Nasal turbinate filtrate from affected turkey poults was used for virus isolation.
• Turkey embryonic liver cells were employed for initial virus culture.
• Multiple blind passages (up to 9) and extended incubation periods (5-7 days) were utilized.
• Adaptation studies were performed using turkey kidney cells.

Main Results:

• Several turkey respiratory adenoviruses were successfully isolated.
• A rigorous protocol involving extended incubation and multiple passages was necessary for isolation.
• The isolated turkey adenoviruses demonstrated rapid adaptation to turkey kidney cells.

Conclusions:

• Turkey respiratory adenoviruses can be effectively isolated from field cases using specific cell culture techniques.
• The rapid adaptation of these viruses to turkey kidney cells provides a valuable tool for further research and diagnostics.
• This study contributes to understanding adenovirus pathogenesis and developing control strategies in turkeys.