[Limitatation of maternal antibodies against IBD [Goumboro] disease in poultry flock country by ELISA test]

The result of this study indicate that there is a great discrepancy in the level of maternal antibodies against Gumboro disease by using the ELISA test for a [4957] samples, the percentage of sample with high level of immunity [45.001%] while the percentage of the sample with low level of immunity [32.459%] and [2 1.989%] the percentage of sample with zero level of immunity, this indicate that the different program of vaccination which is followed in parent stock cause this discrepancy in the level of immunity, which transferred from the parent to chicken and play a negative role in the vaccination programs against the disease