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Seroprevalence Of Hydropericardium Syndrome In Broiler Chickens

By: Binu TV.
Contributor(s): Koshy John (Guide).
Material type: materialTypeLabelBookPublisher: Mannuthy Department of Microbiology, College of Veterinary and Animal Sciences 2000DDC classification: 636.089 6 Online resources: Click here to access online Dissertation note: MVSc Abstract: In the present study, seroprevalence of hydropericardium syndrome (HPS) in broiler chickens in Kerala was evaluated. The results of agar gel precipitation test (AGPT), counter imrnunoelectrophoresis (eIE) and indirect enzyme linked imrnunosorbent assay (ELISA) were compared in detecting HPS antibodies. A total of 350 sera samples were collected from different parts of Kerala. In the first phase, 50 sera samples were screened by AGPT, eIE and indirect ELISA. Three samples were found positive by AGPT and eIE. Seven samples were found to be posi ti ve by indirect ELISA. Based on the comparison, another 300 samples were screened using indirect ELISA and 17 samples were found to be positive. A total of 24 samples were found positive for HPS antibodies out of 350 samples screened by indirect ELISA. The seroprevalence of 6.86 percentage was evaluated in broiler chickens in Kerala using indirect ELISA. The syndrome was experimentally reproduced in three-week-old broiler subcutaneous inoculation viz. , chicks. intramuscular, Various routes of and intraperitoneal routes were tried. The lesions were more pronounced when the birds were inoculated by subcutaneous route. Chick mortality was high on the fourth day. Electron microscopy of the infected liver homogenate revealed hexagonal virus particles of about 75 nm in size. These are suggestive of adenovirus. Histopathology of necropsied birds showed degeneration and necrosis of myocardial fibres, necrosis of hepatocytes and focal areas of coagulation in liver. Basophilic intranuclear inclusion bodies were demonstrated in hepatocytes. Vacuolar degeneration of kidney tubules, lymphoid depletion of bursa, vascular sclerosis of spleen and congestion and oedema of lungs were also seen.
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636.089 6 BIN/SE (Browse shelf) Available 171767

MVSc

In


the


present


study,


seroprevalence


of



hydropericardium syndrome (HPS) in broiler chickens in



Kerala was


evaluated.


The


results


of agar


gel



precipitation test (AGPT), counter imrnunoelectrophoresis
(eIE) and indirect enzyme linked imrnunosorbent assay
(ELISA) were compared in detecting HPS antibodies.
A total of 350 sera samples were collected from
different parts of Kerala. In the first phase, 50 sera
samples were screened by AGPT, eIE and indirect ELISA.
Three samples were found positive by AGPT and eIE.
Seven samples were found to be posi ti ve by indirect
ELISA. Based on the comparison, another 300 samples
were screened using indirect ELISA and 17 samples were
found to be positive.
A total of 24 samples were found positive for HPS
antibodies out of 350 samples screened by indirect



ELISA.


The seroprevalence of 6.86 percentage was



evaluated in broiler chickens in Kerala using indirect
ELISA.

The syndrome was experimentally reproduced in



three-week-old broiler
subcutaneous
inoculation


viz. ,


chicks.
intramuscular,


Various


routes


of
and



intraperitoneal routes were tried. The lesions were
more pronounced when the birds were inoculated by
subcutaneous route. Chick mortality was high on the
fourth day.



Electron


microscopy


of


the


infected


liver



homogenate revealed hexagonal virus particles of about
75 nm in size. These are suggestive of adenovirus.



Histopathology


of


necropsied


birds


showed



degeneration and necrosis of myocardial fibres,
necrosis of hepatocytes and focal areas of coagulation
in liver. Basophilic intranuclear inclusion bodies were
demonstrated in hepatocytes. Vacuolar degeneration of
kidney tubules, lymphoid depletion of bursa, vascular
sclerosis of spleen and congestion and oedema of lungs
were also seen.

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