Evaluation of emergency vaccination against infectious bursal disease [IBD] with or without some non-specific immunostimulants

ABSTRACT

A trial for emergency vaccination against lBDV 48-hour post experimental infection of 29-day old immunostimualnts, namely; Pind-Avi [Fowl pox virus inactivated by gamma rays], Ultracorn[R] [Corynebacterium cutis lysate], Levamisole hydrochloride [R] and transferrin. The results revealed that emergency vaccination of infected chicks was useless in controlling mortality or bursal damage [which was evidenced by bursal lesion score and bursal lymphoid tissue lesions]. The use of these immunostmulants alone improved the protection% but had not restored the bursal damage with varying degree of stimulation of non-specific immune response in the following order Transferrin, ultracorn [R], Pind-Avi finally levamisole. The combination of emergency vaccine with immunostimulant didn't show a significant control point