A Case of Newcastle Disease Virus in Red-Headed Lovebird in Sudan

Abstract

Two diseased red-headed lovebirds were presented for diagnosis to the Department of Avian Diseases and Diagnosis, Veterinary Research Institute, aged 37 days and 4 years. The symptoms were dyspnea, cyanosis of the comb, diarrhea, and fever. Postmortem lesions included pale liver and bloody enteritis. Newcastle disease virus was isolated from lungs, trachea, and intestines following inoculation in the allantoic cavity of 10-day-old fertile eggs; the NDV was identified by the means of HA&HI tests using specific NDV antisera (Lasota strain). The isolate agglutinated equine RBCs but failed to agglutinate sheep and bovine RBCs. The pathogenicity of the NDV isolate was studied, the mean death time was 96 hours, and the intracerebral pathogenicity index (ICPI) value was 0.9, indicating the isolate of lentogenic type.

Characterization of Newcastle Disease Virus Circulating in Vaccinated Poultry Farms in Egypt During 2020

“…The study reported virus isolation on SPF-ECE then the detection of HA activity. This was in agreement with that described by OIE (2012) and Abdelrahim and Elhag (2014).…”

“…Regarding MDT, the result showed that isolates from Giza and Menoufiya governorates were velogenic with MDT of 48 hours and isolate from Cairo was velogenic with MDT of 49 hours. This result agreed with that obtained by Mantip et al (2011), Munir et al (2012, OIE (2012), Abdelrahim and Elhag (2014) and Mehrabanpour et al (2014). Regarding ICPI, the result showed that isolate from Giza was velogenic with ICPI of 1.652 and isolates from Cairo and Menoufiya governorates were velogenic with ICPI of 1.601 and 1.601 respectively.…”