Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens
The aim of this project was to find out the comparative susceptibilities of broilers and layer chickens to a low dose of velogenic viscerotropic Newcastle disease virus (vvNDV) infection using mortalities as the main indicator. Five weeks old Anak broilers and Lohmann Brown layer chicks were inocula...
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doaj-843832e13f3c40fb8397593527bc3fcc2020-11-25T01:45:01ZengTaylor & Francis GroupJournal of Applied Animal Research0971-21190974-18442018-01-014611352135710.1080/09712119.2018.15056201505620Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickensJacinta Ngozi Omeke0Wilfred Sunday Ezema1Didacus Chukwuemeka Eze2John Osita Arinze Okoye3University of NigeriaUniversity of NigeriaUniversity of NigeriaUniversity of NigeriaThe aim of this project was to find out the comparative susceptibilities of broilers and layer chickens to a low dose of velogenic viscerotropic Newcastle disease virus (vvNDV) infection using mortalities as the main indicator. Five weeks old Anak broilers and Lohmann Brown layer chicks were inoculated with vvNDV. The birds were monitored daily for clinical signs and disease evolution was evaluated. Clinical signs consisting of depression and diarrhea appeared at 3 days post-inoculation (DPI) in broilers and at 2 DPI in layer chickens resulting in total mortalities of 30% and 0% in broilers and layer chickens, respectively. Weight loss was statistically, significant in infected broilers on 3 to15 DPI (p < 0.05), while no such difference was observed in the weight of infected layer chicks (p > 0.05). Macroscopic lesions were similar but more severe in broilers compared to layer chickens and included proventricular haemorrhages, intestinal and caecal ulcers. But atrophy of the bursa, spleen and thymus and necrosis and depletion of lymphocytes in the three organs were severe in the infected broilers and pullets Antibody response was significantly (p < 0.05) higher in the layer chickens but virus isolation was more frequent in the broilers.http://dx.doi.org/10.1080/09712119.2018.1505620Velogenic viscerotropic Newcastle disease virus; infectionbreed susceptibilitychickens |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jacinta Ngozi Omeke Wilfred Sunday Ezema Didacus Chukwuemeka Eze John Osita Arinze Okoye |
spellingShingle |
Jacinta Ngozi Omeke Wilfred Sunday Ezema Didacus Chukwuemeka Eze John Osita Arinze Okoye Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens Journal of Applied Animal Research Velogenic viscerotropic Newcastle disease virus; infection breed susceptibility chickens |
author_facet |
Jacinta Ngozi Omeke Wilfred Sunday Ezema Didacus Chukwuemeka Eze John Osita Arinze Okoye |
author_sort |
Jacinta Ngozi Omeke |
title |
Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens |
title_short |
Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens |
title_full |
Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens |
title_fullStr |
Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens |
title_full_unstemmed |
Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens |
title_sort |
low dose velogenic viscerotropic newcastle disease virus infection caused 30% mortalities in anak broilers but none in lohmann brown layer chickens |
publisher |
Taylor & Francis Group |
series |
Journal of Applied Animal Research |
issn |
0971-2119 0974-1844 |
publishDate |
2018-01-01 |
description |
The aim of this project was to find out the comparative susceptibilities of broilers and layer chickens to a low dose of velogenic viscerotropic Newcastle disease virus (vvNDV) infection using mortalities as the main indicator. Five weeks old Anak broilers and Lohmann Brown layer chicks were inoculated with vvNDV. The birds were monitored daily for clinical signs and disease evolution was evaluated. Clinical signs consisting of depression and diarrhea appeared at 3 days post-inoculation (DPI) in broilers and at 2 DPI in layer chickens resulting in total mortalities of 30% and 0% in broilers and layer chickens, respectively. Weight loss was statistically, significant in infected broilers on 3 to15 DPI (p < 0.05), while no such difference was observed in the weight of infected layer chicks (p > 0.05). Macroscopic lesions were similar but more severe in broilers compared to layer chickens and included proventricular haemorrhages, intestinal and caecal ulcers. But atrophy of the bursa, spleen and thymus and necrosis and depletion of lymphocytes in the three organs were severe in the infected broilers and pullets Antibody response was significantly (p < 0.05) higher in the layer chickens but virus isolation was more frequent in the broilers. |
topic |
Velogenic viscerotropic Newcastle disease virus; infection breed susceptibility chickens |
url |
http://dx.doi.org/10.1080/09712119.2018.1505620 |
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