Reference Type

Journal Article

Record Number

121

Author

Echeonwu, G.O.N. Iroegbu, C.U., Emeruwa, A.C.

Year

1993

Title

Recovery of velogenic Newcastle disease virus from dead and healthy free-roaming birds in Nigeria

Journal

Avian Pathology

Volume

22

Pages

383-387

Keywords

rural poultry - Newcastle disease virus

Notes

The authors examined autopsy samples from birds dying during disease outbreaks and cloacal swabs from apparently normal free-ranging birds in areas adjoining to the disease outbreaks. Attempts were made to isolate Newcastle disease virus by inoculation of embryonated chicken eggs. Isolates were pathotyped by establishing mean death time, intracerebral pathogenicity index and intravenous pathogenicity index. Newcastle disease virus was isolated from 9 of 31 chickens and from a single guinea fowl at autopsy. Positive cloacal swabs were recorded from 1 of 8 chickens, 2 of 21 ducks, 1 of 9 pigeons and of 3 turkeys. All 14 isolates were judged to be velogenic.