ASCARIDIOSIS AND SUSPECTED NEWCASTLE DISEASE VIRUS IN A VACCINATED LAYER CHICKEN

Abstract

Ascaridiosis is an intestinal parasitic disease caused by infection of the nematode Ascaridia galli, which were commonly reported in poultry. Worm infection might cause huge economical loss for poultry farmes due to productivities decline and an incline of feed conversion ratio. This writing aims to identify the cause of death of an 124-day-old layer hens, whilst finding out the cause of productivity decline of the involved farm through anatomopathology, histopathology and laboratory tests. Laboratory test on animal’s feses using native, sedimentation, and floatation methods reveals eggs of A. galli, confirmed by the findings of 46 adult worms collected from the chicken’s intestine. Anatomopathological and histopathological examination shows changes in various organs. Based on these results, the chicken was diagnosed with Ascaridiosis. Furthermore, histopathological changes of various organs indicates virus infection, prompting further virology test. Farmers should implement a stricter cage biosecurity and sanitation to compliment vaccination and treatment, and preventing contact between chicken and pathological agents.