Histological and immunochemistry studies on infectious bursal disease vaccine strain characterized by residual pathogenicity. Results show the vaccine was able to provocate severe lesions of the bursae in chickens without or with a low level of maternal antibodies. Insignificant or no changes are evident in chickens with antibody titer> to log 3. after challenge it has also evaluated by histological investigations of the bursa that the vaccinated chickens were all protected since inflammatory changes of the acute infection have not been observed.
Studio di un ceppo vaccinale di IBDV dotato di patogenicità residua nel broiler: indagini istologiche ed immunoistochimiche
COLETTI, Mauro;ASDRUBALI, Giampaolo;DEL ROSSI, Emilia;
1994
Abstract
Histological and immunochemistry studies on infectious bursal disease vaccine strain characterized by residual pathogenicity. Results show the vaccine was able to provocate severe lesions of the bursae in chickens without or with a low level of maternal antibodies. Insignificant or no changes are evident in chickens with antibody titer> to log 3. after challenge it has also evaluated by histological investigations of the bursa that the vaccinated chickens were all protected since inflammatory changes of the acute infection have not been observed.File in questo prodotto:
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