Isolation identification and patho typing of new castle disease viruses form naturally infected chickens in Iraqi Kurdistan Region
Other Title(s)
عزل و تشخيص فايرس مرض النيوكاسل المتوطن في محافظات اقميم كردستان العراق من الدواجن المصابة طبيعيا و تحديد ضراوتهم
Source
The Iraqi Journal of Agricultural Science
Issue
Vol. 49, Issue 1 (28 Feb. 2018), pp.132-141, 10 p.
Publisher
University of Baghdad College of Agriculture
Publication Date
2018-02-28
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Topics
Abstract EN
Iraq has been endemic for Newcastle disease virus (NDV) with natural infection causing significant losses in the poultry industry since 1968.
This study was designed to identify a natural infection of NDV occurred in three governorate in the northern part of Iraq (Erbil, Sulymaniyah and Duhok) among chicken flocks and estimate its virulence by the mean death times(MDT) and intra-cerebral pathogenicity index (ICPI).
Ninety six flocks with high mortality were examined for post mortem lesions and the samples collected from suspected ND chicken flocks, either sick or dead showed characteristic clinical findings and show positive rapid test for NDV antigen.
The collected samples were pooled, homogenized and centrifuged then the virus propagted in embryonated chicken eggs was confirmed by real time RT-PCR, hemagglutination (HA) test and hemagglutination inhibition (HI) test using anti- NDV hyper-immune serum.
The results were isolation 9(12%) out of 96 samples where NDV was positive clinicaly.
The MDT and ICPI revealed that the isolates were compatible to mesogenic (1/9) and velogenic (5/9) types.
These results demonstrated that the NDV strains were virulent for chickens and the vaccination might not give enough protection.
American Psychological Association (APA)
Ahmad, Ahmad Ibrahim& Udishu, Shuni Mikhail. 2018. Isolation identification and patho typing of new castle disease viruses form naturally infected chickens in Iraqi Kurdistan Region. The Iraqi Journal of Agricultural Science،Vol. 49, no. 1, pp.132-141.
https://search.emarefa.net/detail/BIM-838627
Modern Language Association (MLA)
Ahmad, Ahmad Ibrahim& Udishu, Shuni Mikhail. Isolation identification and patho typing of new castle disease viruses form naturally infected chickens in Iraqi Kurdistan Region. The Iraqi Journal of Agricultural Science Vol. 49, no. 1 (2018), pp.132-141.
https://search.emarefa.net/detail/BIM-838627
American Medical Association (AMA)
Ahmad, Ahmad Ibrahim& Udishu, Shuni Mikhail. Isolation identification and patho typing of new castle disease viruses form naturally infected chickens in Iraqi Kurdistan Region. The Iraqi Journal of Agricultural Science. 2018. Vol. 49, no. 1, pp.132-141.
https://search.emarefa.net/detail/BIM-838627
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 139-141
Record ID
BIM-838627