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Sero-prevelance and pathology of important viral pathogens causing reproductive problems in domestic pigs of NE India

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Title Sero-prevelance and pathology of important viral pathogens causing reproductive problems in domestic pigs of NE India
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Creator SR Pegu, DK Sarma, S Rajkhowa and M Choudhury
 
Subject Seroprevalence, pathology, reproduction, ELISA, Antibodies, NE India, pig
 
Description Not Available
The objective of this study was to evaluate the prevalence of antibodies to four economically significant
viral pathogens in domestic pigs porcine Reproductive and respiratory syndrome (PRRS) virus, porcine
parvovirus (PPV), swine influenza virus (SIV) and porcine circo virus (PCV2) through a serological
study in swine herds of five NE states of India experiencing reproductive problems. A total of 1064
serum samples from pigs were tested for antibody to the above mentioned viruses using a commercial
ELISA kit. All farms in this study were farrow-to-finish operations and do not use an all-in-all out
system. The obtained results showed the presence of antibodies to PPV (10.15%), PCV-2 (11.56 %),
PRRSV (0.84%) and SIV (3.94%) in serum samples. Except Mizoram other four states were seronegative
to PRRS virus. Clinical signs in sows and gilts recorded were mostly anestrous, abortion, stillborn and
mummified foetuses, small litter size and weak born piglets. A total of 86 foetuses and weak piglets were
necropsied from different swine herds. Pathological changes recorded grossly were congestion in the
body surfaces, internal organs with accumulation of serosanguinous fluid in the body cavities of some
necropsied late term aborted foetuses. PCR confirmation of the tissue samples collected from foetuses
and piglets was done for the presence of PCV-2 and PPV by a duplex PCR. The present study
demonstrated the extensive circulation of porcine parvo virus and porcine circo virus type 2 among
domestic pig populations of NE India. All seropositivity to PRRSV, PPV, PCV2 and SIV is due to
natural infection, because neither commercial nor autogenous vaccines were available during the study
period throughout the country, indicating that the infection was widespread. This serological survey
confirms a significant role of viral pathogens causing reproductive problems in pig population of NE
India.
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Date 2019-12-05T07:12:56Z
2019-12-05T07:12:56Z
2017-01-01
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/27923
 
Language English
 
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Publisher Not Available