Overview
Feather-pickers' disease, often associated with beak and feather disease (BFD), is primarily caused by beak and feather disease virus (BFDV) and can be exacerbated by concurrent infections such as knemidocoptic mange, cestodiasis, and fungal encephalitis, leading to immunosuppression and severe dermatological and systemic manifestations in psittacine birds 1.Diagnosis
Identification of Knemidocoptes pilae mites in skin lesions 1.
Detection of BFDV antigen through immunohistochemistry in affected skin and potentially within ectoparasites 1.
Presence of Raillietina spp. cestodes in intestinal samples 1.
Histopathological evidence of fungal encephalitis with characteristic hyphae 1.Management
No specific antiviral treatments mentioned; focus on supportive care and managing concurrent infections 1.
Control of ectoparasites (e.g., Knemidocoptes pilae) using appropriate acaricides 1.
Treatment of cestodiasis with anthelmintics as indicated by parasite identification 1.
Antifungal therapy for confirmed fungal infections, tailored to the specific fungal species identified 1.Special Populations
No specific information provided regarding pregnancy, pediatrics, elderly, or comorbidities in psittacine birds 1.Key Recommendations
Conduct thorough diagnostic evaluations including parasitology and histopathology to identify concurrent infections alongside BFDV 1 (Evidence: Moderate).
Implement ectoparasiticide treatments to manage Knemidocoptes pilae infestations and reduce potential BFDV transmission vectors 1 (Evidence: Moderate).
Address secondary infections such as cestodiasis and fungal encephalitis with targeted therapies based on identified pathogens 1 (Evidence: Moderate).References
1 Portas T, Jackson B, Das S, Shamsi S, Raidal SR. Beak and feather disease virus carriage by Knemidocoptes pilae in a sulphur-crested cockatoo (Cacatua galerita). Australian veterinary journal 2017. link