Comparative Study of the Pathology and Pathogenesis of a Local Velogenic Newcastle Disease Virus Infection in Ducks and Chickens

Eze, Chekwube Paul; Okoye, J. O. A.; Ogbonna, Innocent Okonkwo; Ezema, Wilfred Sunday; Eze, Didacus Chukwuemeka; Okwor, E. C.; Ibu, John Okpabi; Salihu, E. A.

doi:10.3923/ijps.2014.52.61

Cited by 17 publications

(9 citation statements)

References 23 publications

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“…This disease is controlled by stamping out policy and vaccination in countries where it is exotic. It is characterized by diarrhoea, very high mortalities, drop in egg production and haemorrhages in the proventriculus and intestines (Ezema et al 2009;Eze et al 2014;Igwe et al 2014Igwe et al , 2017. There is severe atrophy of the lymphoid organs with severe necrosis and depletion of lymphocytes in the bursa, spleen and thymus (Igwe et al 2014;Okoroafor et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens

Omeke

Ezema

Eze

et al. 2018

Journal of Applied Animal Research

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Section: Introductionmentioning

confidence: 99%

Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens

Omeke

Ezema

Eze

et al. 2018

Journal of Applied Animal Research

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“…It infects a wide range of birds including poultry, cage and wild birds (Kaleta and Baldauf 1988). Chickens are the most susceptible (Eze et al 2014;Igwe et al 2014;Okoroafor et al 2018), being the only avian species that show severe gastrointestinal lesions of ND. The velogenic pathotype of ND is the most severe form of ND with the velogenic viscerotropic pathotype being the most common and enzootic in Africa, Middle and Far East and some countries of Central and South America (Spradbrow 1988;Echeonwu et al1993;Liu et al 2003;Solomon et al 2012) It is a disease of severe economic importance due to high mortalities in chickens, loss of egg production due to significant reduction in serum phosphorus levels (Igwe et al 2018), loss of international trade on poultry and poultry products due to embargo by the international community and the expensive stamping out policy used in the control of the disease in those countries where velogenic Newcastle disease (vND) is exotic.…”

mentioning

confidence: 99%

Lesions of velogenic viscerotropic Newcastle disease virus infection were more severe in broilers than pullets

Onyema

Eze

Abba

et al. 2019

Journal of Applied Animal Research

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“…The owner reported that 100 birds died within four days and the birds were unvaccinated and kept in an intensive house. Recorded clinical signs were depression, off-feed, huddling, gasping, ruffled feathers, and greenish diarrhea and soiled vent (Eze et al, 2014). An autopsy was performed to examine and record gross findings.…”

Section: Resultsmentioning

confidence: 99%

A Case of Newcastle disease from an outbreak in a commercial broiler farm in Mymensingh city, Bangladesh

Mostaree

Sultana

slam

2022

BJVM

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Background Newcastle disease (ND) is a contagious and often deadly viral disease caused by the Newcastle disease virus (NDV), affecting a wide variety of domestic and wild birds. The outbreak of this fatal disease is one of the greatest constraints to the expansion of poultry farms, resulting in significant financial losses. Here we report the clinical and pathological features of a ND case from an outbreak in a commercial broiler farm. Materials and Methods A broiler farm with a population of 850 birds aged 27 days reported the death of 100 chickens within 4 days of the onset of the disease in 2019. For investigation, one dead chicken was brought to the department of pathology, Bangladesh Agricultural University, Mymensingh. The case history was recorded, and an autopsy was performed. Portion of the samples were kept in 10% neutral buffered formalin for histopathological study. Results The morbidity and mortality rates were reported to be 17.65% and 11.47%, respectively. Recorded clinical history were depression, off-feed, huddling, gasping, ruffled feathers, greenish diarrhea, soiled vent and the birds were unvaccinated. On external examination, the birds appeared dehydrated, dyspneic and had nasal exudates, ruffled feathers, and soiled vents. Autopsy exhibited prominent gross lesions in the trachea, lungs, proventriculus, gizzard, intestine, cecal tonsil, liver, spleen and cloacal bursa. Grossly, tracheal hemorrhage, severe congestion in the lungs, pin point hemorrhages on the tip of the proventriculur glands, hemorrhage in the cecal tonsil, button-like ulceration in the intestine and mottled spleen were suggestive of ND. Histopathologically, severe enteritis, necrotic mass in the cecal tonsil and proventriculus, lymphoid depletion in the spleen supported the infection of NDV. The clinicopathological findings of the ND outbreak in broiler farm confirmed that it was velogenic viscerotropic in nature. Conclusion ND in commercial flocks remains a threat to the poultry industry in Bangladesh. Implementation of strict biosecurity, husbandry practice and effective vaccination are required to prevent diseases and improve economic stability.

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Comparative Study of the Pathology and Pathogenesis of a Local Velogenic Newcastle Disease Virus Infection in Ducks and Chickens

Cited by 17 publications

References 23 publications

Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens

Low dose velogenic viscerotropic Newcastle disease virus infection caused 30% mortalities in Anak broilers but none in Lohmann Brown layer chickens

Lesions of velogenic viscerotropic Newcastle disease virus infection were more severe in broilers than pullets

A Case of Newcastle disease from an outbreak in a commercial broiler farm in Mymensingh city, Bangladesh

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