Title: Infection Tests with Laryngotracheitis Infctious Bronchitis and Newcastle Disease Vaccine Virus in Ten Strains of BWEL SPF Chickens
Abstract: Ten strains of adult specific pathogen free chickens are inoculated with Laryngotracheitis(ILT) virulent virus,to in vestigate the clinical signs and the pathological changes by autopsy.Inoculate SPF embryonated eggs of the ten strains with virulent infections bronchitis virus(IB) and vaccine ND virus respectively.The titer of virus was tested to evaluate the sensitivity of evey strain of SPF chicken to ILTV、IBV and NDV.
Publication Year: 1999
Publication Date: 1999-01-01
Language: en
Type: article
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