Some physiological Studies On The Bovine Blood Vaccination With Brucella Vaccine

This work was carried out on 18 Friesian female calve 91, 115 and 141 days old average. The calves were belonging to Cooperative Committee Farm of Animal Production, Abu-Hammad, Sharkia Province. Theywere apparently normal and were vaccinated with Br.abortus strain 19 vaccine. Blood was taken before and after vaccination. Studies were followed for 1, 4, 8 and12 weeks post-vaccination for haematological picture and serum survey. Vaccination was carried out by Brucella abortus strain 19 vaccine at a dose 5 ml subcutaneously.In this investigation results were before and after vaccination by 1, 4,8, and 12 weeks and revealed thaterythrocytic count showed in group 1, highly significantdifference between the prevaccination and 1 weekpostvaccination, and between 1 week and 12 weeks.Significant variation between one week and each of 4 and 8 weeks postvaccination. In group 2, highly significant variation between the prevaccination and 1 weekpostvaccination, also between 1 week and each of 8 and 12 weeks postvaccination. Significant vadifference between the prevaccination and 1 week postvaccination, and between 1 week and each of 4 and 8