تاثير المايكوفكس في الاستجابة المناعية للقاح نيوكاسل في فروج اللحم

The current study aimed to evaluate the effect of Mycofix on raising the level of immunity and its effect on maternal immunity and to know the effect of giving a booster dose of Newcastle vaccine at the age of 14 days, as well as its effect on the live weight rate. For this purpose, 200 broiler chicks were used, divided into four groups. The first and third group were not vaccinated with any vaccine for the purpose of measuring the level of maternal immunity, while the second and fourth group were vaccinated with the Newcastle vaccine at the age of one day, and the ELISA test and the hemagglutination inhibition test were used to measure the standard of antibodies formed against the vaccines used, and the results of the study showed Mycofix worked to prolong the period of maternal immunity against Newcastle vaccine in the third group compared with maternal immunity in the first group not treated with Mycofix, and the results showed that the ELISA test was more accurate than the agglutination inhibition test, while in the second and fourth groups, the results showed a positive response In both groups, but it was higher and with a significant difference in the fourth group to which Mycofix was added compared to the second group, while the booster dose led to an increase in The average sera against Newcastle vaccine in both the previous groups, but the fourth group criterion rate was the highest throughout the days of the experiment as a result of giving Mycofix in addition to the booster dose. Treatment with mycofix when compared with control groups (not treated with mycofix).