INVESTIGATION OF BOVINE HERPESVIRUS TYPE -1- (BHV-1) ANTIBODIES IN SYRIAN CATTLE

Abstract

In order to investigate seroprevalence Bovine Herpesvirus-1- antibodies in dairy cattle farms in Syria , 230 serum samples were collected from cattle. The age , sex and relationship with percentage of infection with Bovine herpesvirus-1- were studied by using Competitive Enzyme Linked Immunosorbant assay (cELISA) and Neutralization test(NT).The total percentage of seropostive cattle was 45.21% by using cELISA ,while the lowest percentage was recorded 36.09% by using NT . The results indicated the high infection were found in Gub Ramla 60% ,while the lowest percentage was detected in Zerba 30% by using both tests . Results showed high percentage of acute infection in the age less than 6 months to both sex, while the high percentage of chronic infection recorded in female (2<- 4 years) .No chronic infection recorded in young both sex calves .High percentage of acute infection detected in Jourin , while high percentage of chronic infection recorded in Gub Ramla .Comparison between the two tests used in this study , Showed that high percentages of infection in cELISA ,while in NT recorded less percentages. The high percentage of infection appear in cattle aborted in 2nd trimester of pregnancy when compared with other ones , high percentage were recorded in cattle which suffer from reproductive disorders . The high percentage of infection with Bovine herpesvirus-1- recorded in animals which suffer from respiratory signs ,while the lowest infection rate recorded in healthy one ,without any significant of variance.