تأثير المحسنات المناعية على المناعة النوعية لفيروس مرض الجراب باستخدام اختبارات التحدي الفيروسية

الملخص EN

The study was conducted on (100) commercial broiler chickens, for study the effect of Brewer`s Yeast on Specific Immunity of infectious bursal disease (IBD) after using challenges tests.

The study has confirmed that there were clear significant variations between control and study group which added to its feed Brewer`s yeast during all stages of breeding for antibody titers of IBD (P value = 0.01).

at 34dayold, (P value = 0.002).

at 42,dayold.