Thesis (M.Sc.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Internal Medicine and Infectious Diseases

This indicated that RB51 brucella vaccine could reduce the reproductive disorders among vaccinated cowsThe humeral response of RB51 brucella vaccine could be measured using indirect ELISA using rough LPS of RB51 brucella vaccine A total of 2135 cattle , 1049 non - vaccinated and 1086 vaccinated with RB51 brucella vaccine were examined clinically , serologically and for reproductive disorders among several governorates in EgyptResults revealed that , 3956 In hundered persentnd 3375 In hundered persent non - vaccinated cows and 1598 In hundered persent vaccinated cows were seropositive for Brucella antibodies with Rose Bengal plate test and serum agglutination testSixty isolates were obtained from aborted feoti were identified as Brucella melitensis biovar 3The reproductive study among cows in non - vaccinated and vaccinated farms using serum agglutination test revealed 69 In hundered persentnd 22 In hundered persentbortions ; 61In hundered persentnd 09 n hundered persent repeat breeders ; 30 n hundered persent

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