التأثير المزدوج لعقار الليفاميزول مع لقاح النيوكاسل الحي المضعف عترة لاسوتا على الاستجابة المناعية في أجنة فروج اللحم

الملخص EN

This Study include using 90 Fertile egg at 18 days of age before hatching were divided into three equal group 30 embrocated egg for each , the first group injected with live attenuated Newcastle vaccine(Lasota strain) in dose 0.1 ml / egg contain 4 × 108 Antigen and Levamisole that dose 0.1 ml / egg contain 1.25 mg active ingredient in chick embryo at 18 days.

The second group injected live attenuated Newcastle vaccine (lasota strain) in dose 0.1ml / egg contain 4 × 108 Antigen, in chick embryo at 18 days, Third group (control) injected with normal saline in dose 0.1 mL/egg at the same age and method of in first & second group.

Result showed that good effect of levamisol in Hatchability and livability ratio, Heamagglutination inhibition test (HI) are used to evaluate the level of Immunity in chicks vaccinated with (NDV) and chicks control group at (1,14,28) days.

the results show significant differences P<0.05 between the first group and another group this result showed the levamisol effected to increase antibody levels that lead to increase the immune Response against the Newcastle disease in Broiler chicks.