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Evaluation of pathogenicity of recent variant infectious bursal disease virus and protection afforded by classic vaccines [electronic resource].

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Aly, Mona M

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Language: English Summary language: Arabic Description: p.685-696Other title:

تقييم ضراوة عترة مغايرة من فيروس الجمبورو والحماية الناتجة عن اللقاحات الكلاسكية [Added title page title]

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Egyptian journal of agricultural research, 2003 v. 81 (2), Special issue [electronic resource]:

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In: Egyptian Journal of Agricultural Research 2003.v.81(2)SISummary: A recent Infectious bursal disease virus designated as V1 was detected in vaccinated broiler chickens suffering from severe bursal atrophy, immunosuppression and poor performance. V1 had monoclonal reactivity similar to that recorded for variant Delaware/E strain. In the pathogenicity study, V1 induced marked bursal inflammation and bursal atrophy at 7 days post-inoculation; therefore, it appears to differ in pathogenicity from Delaware/E virus.

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A recent Infectious bursal disease virus designated as V1 was detected in vaccinated broiler chickens suffering from severe bursal atrophy, immunosuppression and poor performance. V1 had monoclonal reactivity similar to that recorded for variant Delaware/E strain. In the pathogenicity study, V1 induced marked bursal inflammation and bursal atrophy at 7 days post-inoculation; therefore, it appears to differ in pathogenicity from Delaware/E virus.

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