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Role of Emergency Vaccination as a Trial to Control DEV Infection in Muscovy Ducklings
Faculty
Veterinary Medicine
Year:
2020
Type of Publication:
ZU Hosted
Pages:
Authors:
Reham Mohamed Mohamed ElBakry
Staff Zu Site
Abstract In Staff Site
Journal:
Zagazig Veterinary Journal Faculty of Veterinary Medicine, Zagazig University
Volume:
Keywords :
Role , Emergency Vaccination , , Trial , Control , Infection
Abstract:
Duck viral enteritis (DVE) is an important viral disease affects ducks all over the world. Vaccination is an effective way to control DVE, and an attenuated vaccine is used extensively worldwide. In this study, we attempted to control the disease by emergency vaccination. Three out of four groups (group 1, 2 and 3) of 21 days old Muscovy ducklings were infected with 0.5 ml of 10 5.5 duck embryo lethal dose 50 (dELD 50 /ml) of identified field duck enteritis virus (DEV) isolate. After the onset of clinical signs (6 days post infection), two out of three infected groups (group 2 and 3) were vaccinated with live attenuated vaccine using oral and S/C routes, respectively. Birds of infected- non vaccinated group (group1) showed the characteristic clinical and pathological features of the disease at the fifth day post infection that progressed throughout 21 days of the experiment, with 33.3% mortality rate. The severity and frequency of clinical and pathological findings in infected-vaccinated groups (group 2 and 3) were relatively lower than those of group1. Only 13.3% mortality rate was recorded in group 2; moreover no death was detected in group 3. The presence of DEV in the tissues collected from dead and euthanized live ducklings at the end of experiment was confirmed by PCR. Our results showed that the use of commercial live attenuated vaccine via S\C route as an emergency vaccine could ameliorate the clinical and pathological findings of the disease and considered as an effective tool to control DEV infection.
Author Related Publications
Reham Mohamed Mohamed ElBakry, "Avian paramyxovirus type 1 in Egypt: Epidemiolog, Evolutionary, Perspective, and Vaccine Approach", Frontiers, 2021
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Reham Mohamed Mohamed ElBakry, "First detection of highly pathogenic avian influenza virus H5N1 in common kestrel falcon (Falco tinnunculus) in Egypt", Fuculty of Veterinary Medicine, Hokkaido University, 2016
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Reham Mohamed Mohamed ElBakry, "Infectivity Of H5N1 Highly Pathogenic Avian Influenza Viruses Isolated From Backyard Chickens In Sharkia, Egypt", zagazig veterinary medicine, 2013
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Reham Mohamed Mohamed ElBakry, "Natural infection with highly pathogenic avian influenza virus H5N1 in domestic pigeons (Columba livia) in Egypt", Taylor & Francis, 2014
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Reham Mohamed Mohamed ElBakry, "Cleavage site stability of Egyptian highly pathogenic avian influenza viruses in backyard chickens during 2009e2011", Taiwan Society of Microbiology, 2013
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Department Related Publications
Amal Anis Mahdi Eid, "Occurrence of Duck virus enteritis in Sharkia (Egypt). Zag. Vet. J.", لايوجد, 1900
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Amal Anis Mahdi Eid, ":Isolation of HPAIV( H5N1) from east delta and the efficacy of homologous and hetrologous vaccines in the protection of chickens. Zag. ", لايوجد, 1900
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Amal Anis Mahdi Eid, "): Fungal affections of ostriches (Stuthio camelus) Egypt. The 2nd congress of Fac. Vet. Med. Suez Canal (Ismaelia). pp. 739-744.", لايوجد, 1900
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Amal Anis Mahdi Eid, "Studies on some etiological agents accompanyning respiratory, swollen head and stunted growth problems in chicken ", لايوجد, 1900
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Amal Anis Mahdi Eid, "Antiviral efficacy of Naphthazarinpigment of crude Echium longifolium root –A preliminary ", لايوجد, 1900
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