Vol. 11, Special Issue 8 (2022)

Author(s):
PM Sonkusale, Vivek Kumar, Deveshkumar Giri, Poornima Gumasta, Neha Shukla, RC Ghosh, Savita Bisen, CS Sannat and DK Jolhe

Abstract:
Poultry industry is constantly exposed to various immunosuppressive agents such as viruses, mycotoxins and environmental stress. Chicken Infectious Anemia is one of the important immunosuppressive viral agents caused by circular single stranded Circovirus which leads to increased susceptibility to concurrent infection and heavy economic losses in terms of mortality and reduced growth performance. During present study, mortality of 10 to 18% due to Chicken infectious anemia in thirteen, 5-12weeks old commercial layer and cockerel farms located at Balod, Durg, Rajnandgaon and Raipur district of Chhattisgarh was noticed. Increased mortality of 15 to 24% was noticed in the chickens with concurrent infections. Characteristic clinical signs of anaemia, typical pale bone marrow and thymic atrophy were suggestive of CIA. Generalized lymphoid atrophy was the most constant and characteristic lesion found in CIA affected birds. Concurrent infections with one or more infections due to Gangrenous dermatitis, Coccidiosis, Colibacillosis and Salmonellosis were noticed in nine flocks. Clinical samples of thymus collected from thirteen flocks were con­firmed as CIA by PCR amplification of 419bp of VP2 gene of virus. The clinical signs, gross and histopathological findings along with PCR amplification of VP2 gene confirmed the outbreak of CIA in commercial layers and cockerels.