ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

Efficacy of vaccination against coccidiosis by using local produced Eimeria tenella vaccine was tested. This had been done by testing vaccine roles in protection of broilers against the infection with Eimeria tenella. Four different routs of vaccinations namely (crop inoculation, drinking water, feed, and spray) were applied. Three attenuated gamma-radiation dozes for oocysts were tested (200 – 250 – 300) and two diffrernt oocysts number (1000 – 2000) as vaccine doze were implemented in this experiment on 10 days old chicks. The results revealed that vaccination with any routs with any numder of oocysts attenuated with any dozes of gamma-radiation gave significant (P< 0.05) differences in immune response and birds performance when compared with two control treatments which were not vaccinated. Birds vaccinated through crop inoculation or drinking water of 2000 oocysts which attenuated by 200

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gray of gamma radiation gave a significant improvement in both of birds immunity and performance than the other routs and dozes.