Abd EL-Khalik, M. A.  <br/><br/>
Preparation of gumboro disease vaccine from intermediate strain and its field application private  [electronic resource]. 

 - p.809-817. 
<br/><br/>Includes references. 
<br/><br/> A new live infectious bursal disease (!BDV) vaccine (Intermediate strain) was prepared, titrated and tested experimentally and in the field. Diffcrent vaccinal programs were tried and the immune response was evaluated. The results obtained from both experiment and field application proved that the prepared new vaccine has a good protection against virulent IBDV either in case of high maternally immune chicks or low maternally immune chicks. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Virus diseases in poultry.<br/>Poultry--Virus diseases