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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2011 > Volume 10 Number 5 > A.B.M. Shahinuzzaman, A.K. Saha, A.C. Mazumder, S. Das, M.A. Sufian, M.A. Baki and M.M. Hossain

Sequential Pathological and Immunohistochemical Study of Pullorum Disease in Experimentally Infected Chicks

A.B.M. Shahinuzzaman, A.K. Saha, A.C. Mazumder, S. Das, M.A. Sufian, M.A. Baki and M.M. Hossain
Department of Pathology, Faculty of Veterinary Science, 1 Bangladesh Agricultural University, Mymensingh-2202, Bangladesh Department of Pathology and Parasitology, Faculty of Veterinary Science, 2 Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
Abstract :

The research work was conducted to study the sequential pathological changes of Pullorum Disease (PD) and immunohistochemical detection of its causal agent (Salmonella pullorum) in various tissues of experimentally infected chicks. Total 40 day old (D0) chicks were divided into experimental and control groups. The chicks were infected at day 15 (D15) of age by oral route with 1 ml of 2 x 108 CFU of S. pullorum. Chicks were sacrificed at day 1 (D1), day 3 (D3), day 5 (D5), day 7 (D7) and day 9 (D9) of Post Infection (PI) and observed the remarkable gross lesions in liver, lung, heart and cecum. Grossly, liver found fragile (40%) at D7 and D9. Cheesy materials in cecum (20%) showed at D9. The highest reisolation of S. Pullorum demonstrated in cecum (68%). Histopathologically, nodular lesion in liver developed at D7 (20%) and D9 (40%). Hepatitis from D1 (20%) and continued upto D9 (60%). Pneumonia and bronchopneumonia along with inflammatory cells in lung were observed at D1 (20%) that continued upto D9 (80%). Spleen showed depletion of lymphocytes at D7 (40%) and D9 (60%). Typhlitis in cecum noticed at D5 (20%) and remained up to at D9 (40%). Congestion and hemorrhage was common in organs at early times and gradually reduced both in grossly and histopathologically thereafter. Immunohistochemistry revealed S. pullorum bacteria in the cytoplasm of hepatocytes of liver, in the cytoplasm of epithelia of cecum (D3, D7) and in the cytoplasm of epithelia of crop (D3).


Keywords :
CFU, experimentally infected, immunohistochemical detection, sequential pathological changes

Date Deposited : 18 Feb 2015 11:03

Last Modified : 18 Feb 2015 11:03

Official URL: http://www.pjbs.org

Volume 10, Number 5, - 2011 , ISSN 1682-8356

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