Seroprevalence of Avian Leukosis (subgroups J, A and B) and Reticuloendotheliosis in different parts of India

Title: Seroprevalence of Avian Leukosis (subgroups J, A and B) and Reticuloendotheliosis in different parts of India


Name of Author: DR. SURAJIT BAKSI

Affiliation: Quality Control & Technical Service Department, Hester Biosciences Limited, Ahmedabad, Gujarat, Pin-380006, India

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Avian Neoplastic Diseases are significant poultry diseases and cause high mortality in commercial layer birds and also affects egg production. The disease causes immunosuppression in birds leading to secondary infections. Avian Leukosis is a disease caused by Avian Leukosis Virus (ALV) – subgroups A, B, C, D, E and J. Reticuloendotheliosis is a disease caused by Reticuloendotheliosis virus (REV). Present study is aimed to find out seroprevalence of ALV-J, ALV-A and B; and REV in neoplastic infected birds from various states of India.



Avian Neoplastic diseases are one of the important diseases of poultry industry. The main diseases of this category are Marek’s disease, Avian Leukosis (AL) and Reticuloendotheliosis (RE). All three diseases cause significant economic losses to poultry as they cause high mortality and depressed performance. Out of all subgroups, A, B and J are considered most common and significant infections worldwide. Reticuloendotheliosis virus (REV) is a group of avian retrovirus that infect turkeys, ducks, quail and chicken. Both ALV and REV cause immunosuppression and cause secondary infections which leads to increased mortality amongst chicken. The diseases have been reported in last decades in many countries in commercial layers and broilers. The incidence of the disease also leads to occurrence of other avian diseases, but there are no reports of infection spreading to humans. Although, it is necessary to control and eradicate the diseases from poultry as it causes morbidity and mortality in infected flocks.



Commercial layer birds infected with avian neoplastic diseases were considered for the study. Total 462 serum samples from different farms of Telangana, Andhra Pradesh, Karnataka, Tamil Nadu and Punjab states of India were collected. All the birds were ageing between 25-30 weeks. There were no other infections present in the birds at the time of blood...

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Posted in: Animal health


Assistant V P, Hester Biosciences Limited

I am Veterinary microbiologist with 15 years of experience in vaccine testing and technical services to customer. I have also experience in poultry breeding farm health monitoring, diagnostic laboratory, hatchery hygiene, broiler birds health monitoring and meat processing quality control. I did my Ph. D. in Veterinary Microbiology. I am approved technical person for veterinary vaccine testing by Commissioner, Food & Drugs Control Administration, India, Gujarat state, Block no-8, 1st floor, Dr. Jivraj Mehta Bhavan, Gandhinagar dated March 5th, 2007. I am nominee of Committee for the Purpose of Control and Supervision of Experiments on Animals (CPCSEA), Ministry of Environment, Forests and Climate Change, Government of India, New Delhi.

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