Kamaldeep
Department of Veterinary Microbiology
P.C. Sharma
Department of Veterinary Epidemiology and Preventive Medicine, College of Veterinary Sciences, CCS Haryana Agricultural University, Hisar-125 004, India
N. Jindal
Department of Veterinary Epidemiology and Preventive Medicine, College of Veterinary Sciences, CCS Haryana Agricultural University, Hisar-125 004, India
G. Narang
Department of Veterinary Epidemiology and Preventive Medicine, College of Veterinary Sciences, CCS Haryana Agricultural University, Hisar-125 004, India
ABSTRACT
Marek`s Disease (MD), which is a lymphoproliferative disease of chickens, remains one of the most important diseases. In the present study, occurrence of Marek`s disease virus in ten vaccinated poultry flocks of Haryana (India) from different geographical locations was determined on the basis of clinical signs, gross and histopathology and precipitation test. The vaccines used were either HVT alone or in combination with SB-1. Samples from all the flocks had gross and histopathological lesions suggestive of Marek`s disease. Grossly, visceral tumors in liver, spleen, kidney and ovary were observed. The characteristic histopathological lesions included infiltration of pleomorphic lymphoid cells such as lymphoblasts, small and large lymphocytes, plasma cells and occasionally MD cells in different organs. The lesions were non-capsulated and infiltrative type. In immunodiffusion test, feather follicle tip samples from five flocks gave a positive precipitation reaction.
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How to cite this article
Kamaldeep, P.C. Sharma, N. Jindal and G. Narang, 2007. Occurrence of Marek`s Disease in Vaccinated Poultry Flocks of Haryana (India). International Journal of Poultry Science, 6: 372-377.
DOI: 10.3923/ijps.2007.372.377
URL: https://scialert.net/abstract/?doi=ijps.2007.372.377
DOI: 10.3923/ijps.2007.372.377
URL: https://scialert.net/abstract/?doi=ijps.2007.372.377