الفهرس 
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Abstract
TPreirmnunizatjon blood samples were obtained from ‘28 Fr; sian calves (46 males antI 80 feynalet) of c°°
rg-nr between sin and twelve months.
The calves comprised nine groups of paternal half sibs, distributed anon’; two herds belonging to El—No— baria Dairy Farm. Then, the calves were vaccinated su. cutaneously with a Rinderpest vnc:tne (Lypholized atte— minted strain) and intr us c.ulärly with anti hemorrhagic septicemia vacc;ne (0.1% formalized whole broth culture of nasteurella mu)toci.do type. I).
One month after vecination, a .SSCond blood sample was obtaind from each calf. After seoarat on, serirn samples were storeC t-: adcep freaze at —20°C until
The assay of nntibody titer against Rindernest vaccine was carried out by microtiter serum neutralization test. The antibody titer determination agoinst hemorrhagic septicernia vaccine was carried out using the indirect