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EVALUATION THE EFFICACY OF ATTENUATED EIMERIA TENELLA OOCYSTS AS VACCINE BY GAMMA RAY IN THE BROILER CHICKEN | ||
| AL-TAQANI | ||
| Article 1, Volume 25, Issue 4, 2012, Pages 0-0 | ||
| Abstract | ||
| This study was conducted for determine the ability of E. tenella oocysts vaccine after attenuation by gamma ray(200-250 kry )in broiler,in 1st day with dose ( 1x104 Oocysts / bird ) to group 1 (200 kry) group 2 (250 kry) that rared in cages, group 5 (200 kry) & group 6 (250 kry) that raised on earth. The result in group (1&5) showed mild clinical signs and mortality rate (3.33%) in the 1st group & (6.6%) in the 5th group. In challenge test on 30 day by sporulated oocyst (6x104 oocyst / bird), the results were mild clinical signs in immunized groups & there were statistic differences between the immune groups & positive control groups, continued to 7-10 days post challenge. The best protective percentage in group 6 was 86.07% & in group 5 was 80% then 68.75 % in group 2 and 60.68% in group 1. | ||
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